Academic literature on the topic 'HIIT'

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Journal articles on the topic "HIIT"

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Lu, Yining, Huw D. Wiltshire, Julien S. Baker, and Qiaojun Wang. "The Effects of Running Compared with Functional High-Intensity Interval Training on Body Composition and Aerobic Fitness in Female University Students." International Journal of Environmental Research and Public Health 18, no. 21 (October 28, 2021): 11312. http://dx.doi.org/10.3390/ijerph182111312.

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High-intensity interval running (HIIT-R) and high-intensity functional training (HIFT) are two forms of HIIT exercise that are commonly used. The purpose of this study was to determine the effects of HIFT on aerobic capacity and body composition when compared to HIIT-R in females. Twenty healthy, untrained female university students (age 20.5 ± 0.7 year) were randomly assigned to a 12-week HIIT-R or HIFT intervention. The HIIT-R group involved a 30 s maximal shuttle run with a 30 s recovery period, whereas the HIFT involved multiple functional exercises with a 2:1 work-active recovery ratio. Body composition, VO2max, and muscle performance were measured before and post intervention. As a result, HIIT-R and HIIT-F stimulated similar improvements in VO2max (17.1% ± 5.6% and 12.7% ± 6.7%, respectively, p > 0.05). Only the HIIT-F group revealed significant improvements in muscle performance (sit-ups, 16.5% ± 3.1%, standing broad jump 5.1% ± 2.2%, p < 0.05). Body fat percentage decreased (17.1% ± 7.4% and 12.6% ± 5.1%, respectively, p < 0.05) in both HIIT-R and HIIT-F with no between-group differences. We concluded that HIFT was equally effective in promoting body composition and aerobic fitness compared to HIIT-R. HIFT resulted in improved muscle performance, whereas the HIIT-R protocol demonstrated no gains.
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Evangelista, Alexandre Lopes, Cauê Vazquez La Scala-Teixeira, Leandro Henrique Albuquerque Brandão, Alexandre Fernandes Machado, Danilo Sales Bocalini, Letí­cia Menezes Santos, and Marzo Edir Da Silva-Grigoletto. "Treinamento intervalado de alta intensidade: uma breve revisão sobre o conceito e diferentes aplicações." Revista Brasileira de Fisiologia do Exerc&amp;iacute cio 20, no. 6 (February 1, 2022): 665–76. http://dx.doi.org/10.33233/rbfex.v20i6.4338.

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Introdução: Devido à sua característica altamente dinâmica e à eficiência do tempo gerado em relação a outros métodos de treinamento, o Treinamento Intervalo de Alta Intensidade (HIIT) tem se tornado uma estratégia utilizada em diferentes contextos. O HIIT é entendido como um método de treinamento que intercala períodos de esforço realizados em alta intensidade com períodos de recuperação ativa (quando uma atividade é realizada em baixa intensidade) ou passiva (quando nenhuma atividade é realizada). Partindo desse conceito que não discrimina tipos de exercícios, diferentes modelos de HIIT podem ser encontrados na literatura, como o HIIT clássico, Sprint Interval Training (SIT), HIIT com peso corporal, Treinamento Funcional de Alta Intensidade (HIFT), Treinamento em Circuito de Alta Intensidade (HICT), e Treinamento Resistido de Alta Intensidade (HIRT), ampliando as possibilidades de aplicação do HIIT para diferentes finalidades e públicos. Objetivo: a) revisitar, através de uma breve atualização, o conceito de HIIT e seus diferentes aspectos; b) apresentar, do ponto de vista científico, diferentes protocolos que podem ser aplicados com base no conceito de HIIT e seus efeitos. Conclusão: Com base no conceito exposto e nas variáveis ​​de controle de intensidade HIIT, esta abordagem pode ser aplicada a diferentes modalidades de treinamento. Além disso, pode ser usado como uma estratégia para fornecer treinamento seguro e eficiente para diferentes populações.
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Vaccari, Filippo, N. Giovanelli, and S. Lazzer. "High-intensity decreasing interval training (HIDIT) increases time above 90% $$\dot{V}$$O2peak." European Journal of Applied Physiology 120, no. 11 (August 11, 2020): 2397–405. http://dx.doi.org/10.1007/s00421-020-04463-w.

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Abstract Purpose Training near $$\dot{V}$$ V ˙ O2max is considered to be the most effective way to enhance $$\dot{V}$$ V ˙ O2max. High-intensity interval training (HIIT) is a well-known time-efficient training method for improving cardiorespiratory and metabolic function and $$\dot{V}$$ V ˙ O2max. While long HIIT bouts allow $$\dot{V}$$ V ˙ O2max to be achieved quickly, short HIIT bouts improve time to exhaustion (Tlim). The aim of this study was to evaluate the time spent above 90% $$\dot{V}$$ V ˙ O2peak (T > 90% $$\dot{V}$$ V ˙ O2peak) during three different HIIT protocols. Methods Twelve cyclists performed three HIIT sessions. Each protocol had the same work and recovery power and ratio of work·recovery−1. The protocols consisted of long-interval HIIT (LIHIIT, 3 min work—2 min recovery), short-interval HIIT (SIHIIT, 30 s work—20 s recovery), and high-intensity decreasing interval training (HIDIT, work from 3 min to 30 s and recovery from 2 min to 20 s). T > 90% $$\dot{V}$$ V ˙ O2peak, Tlim, blood lactate [La], and rate of perceived exertion (RPE) were measured at Tlim. Results T > 90% $$\dot{V}$$ V ˙ O2peak was greater in HIDIT (312 ± 207 s) than in SIHIIT (182 ± 225 s; P = 0.036) or LIHIIT (179 ± 145 s; P = 0.027). Tlim was not significantly different (P > 0.05) between HIDIT (798 ± 185 s), SIHIIT (714 ± 265 s), and LIHIIT (664 ± 282). At Tlim, no differences in [La] and RPE were found between protocols (P > 0.05). Conclusion HIDIT showed the highest T > 90% $$\dot{V}$$ V ˙ O2peak, suggesting that it may be a good strategy to increase time close to $$\dot{V}$$ V ˙ O2peak, despite similar Tlim, [La], and RPE at Tlim.
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Pin-Barre, Caroline, Nicolas Hugues, Annabelle Constans, Eric Berton, Christophe Pellegrino, and Jérôme Laurin. "Effects of Different High-Intensity Interval Training Regimens on Endurance and Neuroplasticity After Cerebral Ischemia." Stroke 52, no. 3 (March 2021): 1109–14. http://dx.doi.org/10.1161/strokeaha.120.031873.

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Background and Purpose: The objective is to compare the effects of high-intensity interval training (HIIT) with long versus short intervals on endurance and motor performance. Their influence on neuroplasticity markers is assessed in the ipsilesional and contralesional cortex and hippocampus since their remodeling could improve functional recovery. Methods: Rats performed work-matched HIIT4 (long intervals: 4 minutes) or HIIT1 (short intervals: 1 minute) on treadmill for 2 weeks following transient middle cerebral artery occlusion. Forelimb grip strength evaluated motor function while incremental exercise tests measured the endurance performance. Key neuroplasticity markers were assessed by Western blot. Results: Both regimens were effective in enhancing both the speed associated with the lactate threshold and maximal speed at D8 and D15. Neuroplasticity markers were upregulated in the contralesional hemisphere after training contrary to the ipsilesional side. Grip strength completely recovered but is faster with HIIT4. Conclusions: HIIT with short and long intervals induced early aerobic fitness and grip strength improvements. Our findings revealed that neuroplasticity markers were upregulated in the contralesional cortex and hippocampus to promote functional recovery.
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Feito, Yuri, Katie Heinrich, Scotty Butcher, and Walker Poston. "High-Intensity Functional Training (HIFT): Definition and Research Implications for Improved Fitness." Sports 6, no. 3 (August 7, 2018): 76. http://dx.doi.org/10.3390/sports6030076.

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High-intensity functional training (HIFT) is an exercise modality that emphasizes functional, multi-joint movements that can be modified to any fitness level and elicit greater muscle recruitment than more traditional exercise. As a relatively new training modality, HIFT is often compared to high-intensity interval training (HIIT), yet the two are distinct. HIIT exercise is characterized by relatively short bursts of repeated vigorous activity, interspersed by periods of rest or low-intensity exercise for recovery, while HIFT utilizes constantly varied functional exercises and various activity durations that may or may not incorporate rest. Over the last decade, studies evaluating the effectiveness of HIIT programs have documented improvements in metabolic and cardiorespiratory adaptations; however, less is known about the effects of HIFT. The purpose of this manuscript is to provide a working definition of HIFT and review the available literature regarding its use to improve metabolic and cardiorespiratory adaptations in strength and conditioning programs among various populations. Additionally, we aim to create a definition that is used in future publications to evaluate more effectively the future impact of this type of training on health and fitness outcomes.
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Hajizadeh Maleki, Behzad, Bakhtyar Tartibian, and Mohammad Chehrazi. "The effects of three different exercise modalities on markers of male reproduction in healthy subjects: a randomized controlled trial." Reproduction 153, no. 2 (February 2017): 157–74. http://dx.doi.org/10.1530/rep-16-0318.

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The aim of this study was to investigate the effects of moderate-intensity continuous training (MICT), high-intensity continuous training (HICT) and high-intensity interval training (HIIT) on markers of male reproduction including seminal markers of oxidative stress and inflammation as well as semen quality and sperm DNA integrity in healthy human subjects. A total of 397 healthy male volunteers were screened and 280 were randomly assigned to one of the MICT (n = 70), HICT (n = 70), HIIT (n = 70) and non-exercise (NON-EX, n = 70) groups. Subjects had inflammatory markers (IL-1β, IL-6, IL-8 and TNF-α), oxidants (ROS, MDA and 8-isoprostane), antioxidants (SOD, catalase and TAC), semen parameters and sperm DNA damage measured at baseline (T1), the end of week 12 (T2), the end of week 24 (T3), and 7 (T4) and 30 days (T5) after training. Chronic MICT, HICT and HIIT attenuated seminal markers of oxidative stress and inflammation with different kinetics for the three types of exercise (P < 0.05), and these changes were correlated with favorable improvements in semen quality parameters and sperm DNA integrity (P < 0.05). MICT was superior to HICT and HIIT in the improvements of markers of male reproductive function (P < 0.05). In conclusion, different exercise modalities favorably affect markers of male reproduction with different kinetics, suggesting intensity-, duration- and type-dependent adaptations to exercise training in healthy human subjects.
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Marterer, Natalie, Verena Menz, and Martin Burtscher. "Effekte eines hochintensiven Intervalltrainings in der Ebene und in ansteigendem Gelände hinsichtlich der physischen Leistungsfähigkeit." Sportverletzung · Sportschaden 32, no. 02 (April 5, 2018): 120–24. http://dx.doi.org/10.1055/a-0575-2965.

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Zusammenfassung Hintergrund Mit Zunahme hochintensiven Intervalltrainings (HIIT) im Breiten- und Leistungssport steigt das Verletzungs- und Überlastungsrisiko. Für die Effektivität eines HIITs in ansteigendem Gelände (bergauf) fehlen wissenschaftliche Evidenz und verlässliche Angaben für Intensität, Dauer und Steigungsgrad. Das Ziel dieser Untersuchung war es, die Belastungsverträglichkeit und Leistungsveränderungen (VO2max und 800 m-Laufzeit in der Ebene und bergauf) durch HIIT in der Ebene und in ansteigendem Gelände zu vergleichen. Probanden und Methoden An der Untersuchung nahmen insgesamt 17 gut trainierte SportstudentInnen (Ø VO2max von 53,7 ml/min/kg) teil, die randomisiert in die Gruppen Ebene (GE; n = 8) und Berg (GB; n = 9) eingeteilt wurden. Die Probanden beider Gruppen absolvierten innerhalb von 4 Wochen 14 HIIT-Einheiten in ansteigendem Gelände (GB) oder in der Ebene (GE). Jede HIIT-Einheit bestand aus 8 × 2 min-Läufen bei 90 – 95 % der maximalen Herzfrequenz (HFmax) bei einer Work/ Rest-Ratio von 1:1. Die Vor- und Nachtests (VT) bestanden aus einer Spirometrie auf dem Laufband und 800 m-Lauftests in der Ebene und in ansteigendem Gelände. Nach der Intervention haben alle ProbandInnen anhand der BORG-Skala das individuelle Belastungsempfinden beurteilt. Ergebnisse In der GE konnten 3 Probanden ihr Training aufgrund von Überlastungssymptomen nicht zu Ende bringen, in der GB 2 Probanden aus zeitlichen Gründen. Bei der Auswertung des Belastungsempfindens war eine Tendenz (p = 0,08; t = – 1,96) erkennbar, dass das Training in der Ebene als anstrengender empfunden wurde. Durch ein vierwöchiges HIIT hat sich die VO2max durchschnittlich um 5,2 % (p = 0,02; t = – 2,76), die 800 m-Zeit in der Ebene um 4,6 % (p = 0,01; t = 3,48) und die 800 m-Zeit in ansteigendem Gelände um 6,3 % (p = 0,02; t = 2,77) signifikant verbessert. Es konnte kein signifikanter Gruppeneffekt festgestellt werden. Diskussion und Schlussfolgerung Diese Untersuchung ist ein weiteres Beispiel dafür, dass sich die sportartspezifische Leistungsfähigkeit gut trainierter Athleten nach einem HIIT signifikant verbessert. Die Verbesserung der Laufleistungen unterscheidet sich nicht zwischen den Trainingsgruppen (Bergauf vs. Ebene). Bedeutsam ist die Beobachtung, dass Bergauf-HIITs tendenziell besser verträglich waren als HIITs in der Ebene.
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Stavrinou, Pinelopi S., Gregory C. Bogdanis, Christoforos D. Giannaki, Gerasimos Terzis, and Marios Hadjicharalambous. "Effects of high-intensity interval training frequency on perceptual responses and future physical activity participation." Applied Physiology, Nutrition, and Metabolism 44, no. 9 (September 2019): 952–57. http://dx.doi.org/10.1139/apnm-2018-0707.

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The effectiveness of high-intensity interval training (HIIT) in inducing positive physiological adaptations is well documented. However, its impact on perceptual responses and on future physical activity (PA) engagement is less evaluated. The present study aimed to examine the effects of HIIT frequency on perceptual responses, health-related quality of life (HRQOL), and its influence in future PA participation. Thirty-five inactive adults were randomly assigned to a control (CON) and to 2 training groups that performed HIIT (10 × 60 s cycling, ∼83% peak power output) for 2 (HIIT-2) or 3 (HIIT-3) times per week for 8 weeks. Following the HIIT intervention, exercise enjoyment, HRQOL, and the intention to implement HIIT in the future were evaluated. Eight weeks after cessation of training, follow-up evaluations of HRQOL and PA were performed. Following the intervention, both training frequencies induced high levels of enjoyment (HIIT-2: 6.0 ± 1.1, HIIT-3: 6.0 ± 1.1, scale 1–7), improved HRQOL (HIIT-2: p = 0.040; HIIT-3: p = 0.024), and reported intention to implement HIIT in the future (HIIT-3: 100%, HIIT-2: 93% of participants). At follow-up, HIIT-3 participants reported higher completion of HIIT compared with HIIT-2 and CON (p < 0.05). Both training groups sustained improved HRQOL and increased vigorous and total PA (p < 0.05). This study showed that performing HIIT either 2 or 3 times per week is an enjoyable exercise modality that promotes a sustainable increase in habitual PA levels and improves HRQOL. Moreover, the higher training frequency resulted in greater HIIT completion in the 8-week period following the cessation of training.
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Buckley, Stephanie, Kelly Knapp, Amy Lackie, Colin Lewry, Karla Horvey, Chad Benko, Jason Trinh, and Scotty Butcher. "Multimodal high-intensity interval training increases muscle function and metabolic performance in females." Applied Physiology, Nutrition, and Metabolism 40, no. 11 (November 2015): 1157–62. http://dx.doi.org/10.1139/apnm-2015-0238.

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High-intensity interval training (HIIT) is a time-efficient method of improving aerobic and anaerobic power and capacity. In most individuals, however, HIIT using modalities such as cycling, running, and rowing does not typically result in increased muscle strength, power, or endurance. The purpose of this study is to compare the physiological outcomes of traditional HIIT using rowing (Row-HIIT) with a novel multimodal HIIT (MM-HIIT) circuit incorporating multiple modalities, including strength exercises, within an interval. Twenty-eight recreationally active women (age 24.7 ± 5.4 years) completed 6 weeks of either Row-HIIT or MM-HIIT and were tested on multiple fitness parameters. MM-HIIT and Row-HIIT resulted in similar improvements (p < 0.05 for post hoc pre- vs. post-training increases for each group) in maximal aerobic power (7% vs. 5%), anaerobic threshold (13% vs. 12%), respiratory compensation threshold (7% vs. 5%), anaerobic power (15% vs. 12%), and anaerobic capacity (18% vs. 14%). The MM-HIIT group had significant (p < 0.01 for all) increases in squat (39%), press (27%), and deadlift (18%) strength, broad jump distance (6%), and squat endurance (280%), whereas the Row-HIIT group had no increase in any muscle performance variable (p values 0.33–0.90). Post-training, 1-repetition maximum (1RM) squat (64.2 ± 13.6 vs. 45.8 ± 16.2 kg, p = 0.02), 1RM press (33.2 ± 3.8 vs. 26.0 ± 9.6 kg, p = 0.01), and squat endurance (23.9 ± 12.3 vs. 10.2 ± 5.6 reps, p < 0.01) were greater in the MM-HIIT group than in the Row-HIIT group. MM-HIIT resulted in similar aerobic and anaerobic adaptations but greater muscle performance increases than Row-HIIT in recreationally active women.
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Youssef, Layale, Jordan Granet, Vincent Marcangeli, Maude Dulac, Guy Hajj-Boutros, Olivier Reynaud, Fanny Buckinx, et al. "Clinical and Biological Adaptations in Obese Older Adults Following 12-Weeks of High-Intensity Interval Training or Moderate-Intensity Continuous Training." Healthcare 10, no. 7 (July 20, 2022): 1346. http://dx.doi.org/10.3390/healthcare10071346.

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Sarcopenia and obesity are considered a double health burden. Therefore, the implementation of effective strategies is needed to improve the quality of life of older obese individuals. The aim of this study was to compare the impact of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on functional capacities, muscle function, body composition and blood biomarkers in obese older adults. Adipose tissue gene expression and markers of muscle mitochondrial content and quality control involved in exercise adaptations were also investigated. Sixty-eight participants performed either HIIT (n = 34) on an elliptical trainer or MICT (n = 34) on a treadmill, three times per week for 12 weeks. HIIT produced significantly higher benefits on some physical parameters (six-minute walking test (HIIT: +12.4% vs. MICT: +5.2%); step test (HIIT: +17.02% vs. MICT: +5.9%); ten-repetition chair test (HIIT: −17.04% vs. MICT: −4.7%)). Although both HIIT and MICT led to an improvement in lower limb power (HIIT: +25.2% vs. MICT: +20.4%), only MICT led to higher improvement in lower limb muscle strength (HIIT: +4.3% vs. MICT: +23.2%). HIIT was more beneficial for increasing total lean body mass (HIIT: +1.58% vs. MICT: −0.81%), while MICT was more effective for decreasing relative gynoid fat mass (HIIT: −1.09% vs. MICT: −4.20%). Regarding adipose tissue gene expression, a significant change was observed for cell death-inducing DFFA (DNA fragmentation factor-alpha)-like effector A (CIDEA) in the HIIT group (A.U; HIIT at T0: 32.10 ± 39.37 vs. HIIT at T12: 48.2 ± 59.2). Mitochondrial transcription factor A (TFAM) content, a marker of mitochondrial biogenesis, increased significantly following HIIT (+36.2%) and MICT (+57.2%). A significant increase was observed in the HIIT group for Translocase of Outer Membrane 20 (TOM20; +54.1%; marker of mitochondrial content), Mitofusin-2 (MFN2; +71.6%; marker of mitochondrial fusion) and Parkin RBR E3 Ubiquitin Protein Ligase (PARKIN; +42.3%; marker of mitophagy). Overall, our results indicate that even though MICT (walking on treadmill) and HIIT (on an elliptical) are effective intervention strategies in obese older adults, HIIT appears to have slightly more beneficial effects. More specifically, HIIT led to higher improvements than MICT on functional capacities, lean mass and skeletal muscle markers of mitochondrial content, fusion, and mitophagy. Thus, MICT but also HIIT (time-efficient training) could be recommended as exercise modalities for obese older adults to maintain or improve mobility, health and quality of life.
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Dissertations / Theses on the topic "HIIT"

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Kalenius, Richard. "HIIT och dess effekt på löpekonomi hos vältränade löpare och triatleter." Thesis, Karlstads universitet, Institutionen för hälsovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36705.

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Background: Running economy is one of the key factors to achieve top performance in endurance events. Little evidence exists for improving running economy using high-intensity interval training while running.   Objectives: The purpose of this study was to examine how HIIT affects running economy and VO2max.   Method: 14 well-trained athletes (age 35 ± 8,9 years, height 175 ± 11,7 cm and weight 69 ± 12,2 kg) were divided into two separate groups (HIIT and Control). HIIT group performed 3 HIIT exercises every week for 4 weeks and Control group continued with their separate training programs consisting of mostly traditional endurance training.   Results: Running economy showed no improvement in HIIT (pre 38,62 and post 38,62 ml/kg/min, p=1.00) but Control improved (pre 45,41 and post 43,37 ml/kg/min, p=0,03). VO2max decreased in HIIT (mean 61,32 to 60,84 ml/kg/min) and in Control (mean 61,99 to 58,47 ml/kg/min).
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Alyousif, Zakaria A. "The Effects of High Intensity Interval Training (HIIT) on Asthmatic Adult Males." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1403969461.

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Sugiura, Shinichiro. "Effect of High Intensity Interval Training (HIIT) on Vascular Function and Insulin Sensitivity." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1430487607.

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Lopes, Cláudio Miguel Piedade. "Efeito de um programa de intervenção de 16 semanas, de alta intensidade (Hiit), em jovens universitários com excesso de peso e obesidade." Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/27869.

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Objetivo: O objetivo deste estudo é analisar os efeitos de um programa de treino intervalado de alta intensidade (HIIT) e treino força em indivíduos com excesso de peso ou obesidade que estudem na Universidade de Évora, ao nível antropométrico, composição corporal, força dos membros inferiores, resistência à insulina e capacidade máxima de oxigénio (VO2máx). Metodologia: Este estudo é do tipo quasi-experimental em que dois grupos participaram no programa de treino. A amostra foi dividida em dois grupos em função da menor (G1 (N=5)) ou maior (G2 (N=6)) assiduidade ao programa. Os participantes eram de ambos os sexos (34,64 ± 3,90 anos) e alunos da Universidade de Évora, todos tinham um Índice de Massa Corporal (IMC) ≥ 25 kg/m². O programa de treino prolongou-se durante 12 semanas e teve uma frequência semanal de três sessões com uma duração de 50 minutos. Foram realizados 2 momentos de avaliação, no início e no fim do programa. Resultados: Observaram-se diferenças significativas intra-grupo, para o G2, nas variáveis Peso(p=0,028), Índice de Massa Corporal (IMC; p=0,028), Perímetro da Cintura (PC; p=0,027), Massa Gorda (MG; p=0,028), %MG (p=0,043), Massa Muscular (MM; p=0,046), Gordura na Região Abdominal (p=0,028), (RI (120’); p=0,043) e no (VO2max em ml/kg/min; p=0,028) . Na comparação entre os dois grupos não foram observadas diferenças significativas nas variáveis estudadas. Conclusão: O presente estudo permite concluir que ocorreram melhorias na composição corporal, nas medidas antropométricas e no VO2máx, tendo um impacto superior no grupo de maior assiduidade - superior ou igual a 50%; ABSTRACT: Objective: The aim of this study is to analyse the effects of a high intensity interval training program (HIIT) and strength training in overweight or obese individuals studied at the Évora University, on a anthropometric level, body composition, limb strength lower levels, insulin resistance and maximum oxygen capacity (VO2max). Methodology: This is a quasi-experimental study in which two groups participated in the training program. The sample was divided into two groups according to the lower (G1 (N=5)) or higher (G2 (N=6)) attendance to the program. Participants were of both sexes (34,64 ± 3,90) and students at Évora University, all of them had a Body Mass Index (BMI) ≥ 25,0 kg/m². The training program lasted for 12 weeks and had a weekly frequency of three sessions lasting 50 minutes. Two evaluation moments were carried out, at the beginning and at the end of the program. Results: Significant intra group differences were observed, for G2, in the variables Weight (p=0,028), Body Mass Index (BMI; p=0,028), Waist Circumference (WC; p=0,027), Fat Mass (FM; p=0,028), %FM (p=0,043), Muscle Mass (MM; p=0,046), Fat in the Abdominal Region (p=0,028), (IR (120’); p=0,043), and (VO2max in ml/kg/min; p=0,028). In the comparison between two groups, no significant differences were observed in the studied variables Conclusion: The present study allows us to conclude that were improvements in body composition, anthropometric measurements and VO2max, with a greater impact on the group with a greater attendance – greater than or equal to 50%.
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Han, Dae Uk. "Feasibility Assessment of High-Intensity Interval Training in Adults Living with Severe Mental Illness." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23386.

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Background: Adults living with Severe mental illness (SMI) are at a high risk of cardiovascular disease. With the growing popularity for High-Intensity Interval Training (HIIT), some evidence suggests that there is potential to greatly reduce cardiovascular and metabolic risk factors and improve functional exercise outcomes in comparison to moderate-intensity continuous training (MICT). However, little research on HIIT has been done in SMI. Therefore, the aim of the study was to assess the feasibility of HIIT in adults living with SMI. A secondary aim was also proposed, to compare the effect of HIIT to a lifestyle intervention in relation to Cardiometabolic Risk Factor (CMRF) and functional exercise capacity. Method: Adults living with SMI, attending a service provided by the Collaborative Centre for Cardiometabolic Health in Psychosis (ccCHiP) were recruited to participate in one of two 10-week programs, during their visit. The programs offered were a HIIT (Intervention; 20-min HIIT session, three times per week) or a lifestyle program (Control; 30-min lifestyle education and 30-min circuit exercise program, once per week). Feasibility was assessed based on enrolment and withdrawal rates in each group. Lipid profile and 6-Minute Walk Test (6-MWT) were variables assessed for CMRF and functional exercise capacity, respectively. Result: 15 participants were recruited (Intervention = 11; Control = 4). A total of 4 participants withdrew from the study (Intervention = 3; Control = 1). No significant difference was found between the intervention and control for lipid profile and 6-MWT. Conclusion: Preliminary evidence suggests that HIIT may be a feasible program, based on the level of enrolment seen among adults with SMI.
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Sabag, Angelo. "Exercise and Ectopic Fat in Type 2 Diabetes." Thesis, The University of Sydney, 2019. https://hdl.handle.net/2123/21269.

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Background: Ectopic fat is an independent cardiometabolic risk factor for type 2 diabetes (T2D). Physical activity leads to increased cardiorespiratory fitness (CRF) and is a cornerstone therapy for T2D. While current recommended physical activity levels are effective for improving cardiometabolic health, few people achieve these, therefore, it is important to explore alternate yet efficacious exercise interventions that reduce cardiometabolic risk factors such as ectopic fat in T2D. Studies: Study 1 of this thesis assessed the association between CRF and non-alcoholic liver disease (NAFLD) in inactive overweight and obese adults via cross-sectional analysis; study 2 of this thesis assessed the effect of regular exercise on ectopic fat in T2D via systematic review and meta-analysis; study 3 of this thesis assessed the efficacy of a novel low-volume high-intensity interval training (HIIT) intervention and a traditional moderate-intensity continuous training (MICT) intervention vs. placebo (PLA) for improving liver fat (LF), pancreas fat (PF) and other cardiometabolic risk factors in obese inactive adults with T2D. Results: The results of study 1 demonstrated that CRF was significantly associated with NAFLD in inactive overweight and obese adults. The association was largely explained by anthropometric and circulating liver enzyme levels; the results of study 2 showed that aerobic exercise (AEx) led to significant reductions in visceral adipose tissue vs. control and a similar relationship was observed for LF, however, there was a lack of data to confirm this; the results of study 3 demonstrated that the HIIT and MICT interventions led to significant improvements in LF, PF and glycaemic control vs. PLA. Conclusions: The findings from this thesis showed that AEx is an effective therapy for reducing ectopic fat and improving cardiometabolic health in T2D. These benefits were also evident for AEx at levels much lower than recommend guidelines and independent of weight loss.
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Mier, Nicole M. "Training effect of a high intensity interval training (HIIT) program using upper extremity exercise." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527569.

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The purpose of this study was to investigate the effects of a high intensity interval training program (HIIT) using the upper extremities on peak oxygen uptake (VO2peak), peak heart rate (HRpeak), total time-to-fatigue (TTF), peak power output (PPO), rating of perceived exertion (RPE), and blood lactate concentrations (bLa). Results showed significant (p ≤ 0.05) improvements by the HIIT group in VO2peak, HRpeak, PPO, and TTF when compared to a continuous training (CT) group.

Results of this study suggest that upper extremity HIIT appears to produce greater improvements in several physiological outcome measures when compared to CT and may be an effective way to improve cardiopulmonary fitness. Furthermore, a HIIT program using the upper extremities as little as 2 days per week appears to be a viable way to improve factors that contribute to cardiopulmonary fitness, muscular fitness, and performance, while being an efficient use of time.

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Pietras, Angela. "The Effects of Different Exercise Intensities on Glucoregulatory Response." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1418222823.

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Salassi, James Warren III. "The acute effects of various high-intensity interval training (HIIT) protocols on cardiopulmonary and metabolic function." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527583.

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This study compared the acute cardiopulmonary and metabolic effects of four high-intensity interval training (HIIT) protocols using varying intensities during the work and recovery periods. Eleven participants (5 males, 6 females) performed four, 20- minute HIIT protocols at a 1:1 "work:recovery" ratio on a cycle ergometer in random order. The work:recovery relative intensities, based upon previously determined maximum work rates, were: 80%:0%, 80%:50%, 100%:0%, and 100%:50%. Oxygen uptake, heart rate, blood lactate, and rating of perceived exertion were measured. Data were analyzed using a two-way, repeated measures ANOV A (p ≤ 0.05). Oxygen uptake and heart rate were expressed as a percentage of the peak values established during a prior graded exercise test. There were clear differences in physiological response between protocols. The 80:50 and 100:0 may produce the best combination of effects. The 100:50 produced the greatest physiological response, however, it may not be practical for the general population.

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Lännerström, Johan. "Mitokondriella proteiner i snabba och långsamma muskelfibrer." Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4947.

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Syfte och frågeställningar Syftet med denna studie var att undersöka om förekomsten av och förhållandet mellan proteiner i mitokondrien, som är kopplade till oxidativ stress, skiljer sig åt mellan långsamma och snabba muskelfibrer. Frågeställningar: 1) Skiljer sig förekomsten av proteinerna Uncoupling protein 3 (UCP3), Adenine Nucleotide translocator (ANT) isoform 1 & 2, samt Superoxide dismutase (SOD2) åt i mitokondrier i snabba och långsamma muskelfibrer när man normaliserar för mitokondriemängd? 2) Finns det någon skillnad i uttryck av ovanstående proteiner samt Catalase mellan snabba och långsamma fibrer när man normaliserar för totalprotein (TP). Metod Enskilda muskelfibrer dissekerades ut från 8 frystorkade biopsier hos 4 män tagna i Vastus Lateralis och analyserades med immunoblotting. Fibrerna klassificerades som typ-1 (MHC-I) eller typ-2 (MHC-II) vartefter deras innehåll av mitokondriella proteiner analyserades. Citrate Synthase användes som markör till att normalisera för mitokondriedensitet medan Reactive Brown användes för att normalisera för mängden laddat totalprotein. Resultat ANT-2 visade tendens att ha 59 % högre förekomst i typ-2 fibrers mitokondrier (P=0,052). I övrigt sågs inga statistiska skillnader efter normalisering för mitokondriell densitet. Efter normalisering för endast totalprotein visade ANT-1 (P=0,01), SOD2 (P=0,002), CS (P=0,01) och ANT-2 (P=0,003) statistisk signifikans till att vara mer före kommande i typ-1 fibrer med 10, 25, 8 och 58 %. UCP3 visade tendens till signifikans (P=0,052) att vara 27 % mer uttryckt i typ-1 fibrer medan Catalase inte visade någon skillnad i uttryck mellan de olika fibertyperna. Slutsats Det verkar inte finnas generella inneboende skillnader i proteinmängd mellan mitokondrier i typ-1 och typ-2 fibrer utifrån dessa resultat. Men de mitokondriella proteinerna fanns mer uttryckt i typ-1 fibrer vilket indikerar på att fler mitokondrier finns i typ-1 fibrerna. Det bör dock inte uteslutas att det existerar skillnader på mitokondrienivå eftersom inga resultat nådde signifikant nivå. Studiens största fynd var att UCP3 visade tendens till att vara högre uttryckt i typ-1 fibrer, vilket säger emot existerande litteratur på human skelettmuskulatur.
Aim The puropse of this study was to investigate whether the expression of and the relation between mitochondrial proteins, that are associated with oxidative stress, differs among slow twitch and fast twitch muscle fibers. Research questions: 1) Does the prevalence of the proteins Uncoupling protein 3 (UCP3), Adenine Nucleotide Translocator (ANT isoform-1 & 2) and Superoxide Dismutase (SOD2) differ in fast and slow twitch muscle fibers when normalized for mitochondrial density? 2) Is there any difference in above mentioned proteins plus Catalase in expression between fast and slow twitch fibers when normalized for total protein content? Method Single muscle fibers were dissected from 8 freeze dried biopsies in 4 men, taken in the Vastus Lateralis, and analyzed with immunoblotting. Fibers were classified as type-1 (MHC-I) or type-2 (MHC-II) and then further analyzed for their protein content. Citrate Synthase was used as a marker to normalize for mitochondrial density while Reactive Brown was used to normalize for total protein content loaded. Results ANT-2 showed a tendency to be 59 % more abundant in the mitochondria of type-2 fibers (P=0,052). No other statistical differences after normalization for mitochondrial density were found. When normalizing for total protein, ANT-1 (P=0,01), SOD2 (P=0,002), CS (P=0,01) and ANT-2 (P=0,003) showed statistical significance to be more abundant in typ-1 fibers with 10, 25, 8 and 58% respectively. UCP3 showed a tendency to statistical significance (P=0,052) to be 27 % more abundant in type-1 fibers while Catalase did not show any difference in expression between the fiber types. Conclusions There seems to be no general differences between mitochondria in type-1 and type-2 fibers based on these results. However, the mitochondrial proteins are more expressed in type-1 fibers, which indicates that more mitochondria exist in the type-1 fibers. Nevertheless, it should not be ruled out that differences on mitochondrial level actually do exist given that no results reached statistical significance. The biggest discovery in this study was that UCP3 showed tendency to be more expressed in type-1 fibers, which contradicts existing literature on human skeletal muscle.
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Books on the topic "HIIT"

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Lewis-McCormick, Irene. The HIIT advantage: High-intensity workouts for women. Champaign, IL: Human Kinetics, 2016.

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Remmel, M. Hiie ase: Hiis Eesti rahvapärimuses. Tartu: Eesti Kirjandusmuuseum, 1998.

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Harney, Gina. Hiit It! Springer Publishing Company, Incorporated, 2014.

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Cinausero, Alessandro Andrea. Hiit,studi Scientifici. Independently Published, 2021.

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Phiri, Casper. Steeled Fit- Hiit. Blurb, Incorporated, 2021.

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Clay, Ingrid S. Science of HIIT. Kindersley Ltd., Dorling, 2021.

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HIIT: SHORT and INTENSE. Independently Published, 2017.

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Maroger, Isabelle, Guenièvre Suryous, and Marine Ragot. Mon cahier HIIT yoga. SOLAR, 2021.

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Morales, Alirio Vera, and Iván Fresneda. Las Mejores Rutinas HIIT. Independently Published, 2019.

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Notebooks, If. Hiit Log Book: HIIT Log for Workouts, Food - Compact 5 X 8. Independently Published, 2020.

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Book chapters on the topic "HIIT"

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Cutrofello, Andrew. "‘Hit it, hit it, hit it’." In The Routledge Companion to Shakespeare and Philosophy, 460–72. Abingdon, Oxon ; New York, NY : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781315677019-32.

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Lagoudakis, Michail G., Thomas Zeugmann, and Claude Sammut. "Variance Hint." In Encyclopedia of Machine Learning, 1021. Boston, MA: Springer US, 2011. http://dx.doi.org/10.1007/978-0-387-30164-8_874.

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Hiriart-Urruty, Jean-Baptiste. "Hint(s)." In Springer Undergraduate Mathematics Series, 100–119. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42186-5_2.

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Hasselblatt, Cornelius. "Hint, Aadu." In Kindlers Literatur Lexikon (KLL), 1. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_11199-1.

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Weik, Martin H. "hit." In Computer Science and Communications Dictionary, 729. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_8401.

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Bährle-Rapp, Marina. "hist(o)..., Hist(o), auch: histio..., Histio..." In Springer Lexikon Kosmetik und Körperpflege, 258. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_4773.

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Jackson, Daniel M., Richard Jankovich, Eric Sheinkop, and David Marcus. "Introduction." In Hit Brands, 1–22. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137271488_1.

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Jackson, Daniel M., Richard Jankovich, Eric Sheinkop, and David Marcus. "The History of Music and Brand Relationships." In Hit Brands, 23–30. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137271488_2.

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Jackson, Daniel M. "Music as Identity." In Hit Brands, 31–41. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137271488_3.

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Jackson, Daniel M., and David Marcus. "Case Studies for Music as Identity." In Hit Brands, 43–79. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137271488_4.

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Conference papers on the topic "HIIT"

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Keesing, Aaron, Matthew Ooi, Ocean Wu, Xinghao Ye, Lindsay Shaw, and Burkhard C. Wünsche. "HIIT With Hits." In ACSW 2019: Australasian Computer Science Week 2019. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3290688.3290740.

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Haller, Joshua C., Young H. Jang, Jack Haller, Lindsay Shaw, and Burkhard C. Wünsche. "HIIT The Road." In ACSW 2019: Australasian Computer Science Week 2019. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3290688.3290752.

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Kusumaningtyas, Mei, and Hana Kristina. "The Relative Effectivness of Steady State Cardio and High Intensity Interval Training on Cardiorespiratory Fitness Among Students at School of Health Polytechnics, Surakarta." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.05.08.

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ABSTRACT Background: Cardiorespiratory fitness essential to prevent the risk cardiovascular disease. This study aimed to determine the relative effectiveness of Steady State Cardio (SSC) and High-Intensity Interval Training (HIIT) on cardiorespiratory fitness in the early adult age group. Subjects and Method: This was a randomized control trial conducted at the School of Health Polytechnics, Surakarta, from October to November, 2019. A total sample 45 students was divided into 2 groups: (1) SSC group and (2) HIIT group. The dependent variable was cardiorespiratory fitness. The independent variables were SSC and HIIT. The measuring instrument was a multi-stage fitness involving a 20 meter long run. The results were converted into VO2max level. The data were analyzed by Mann Whitney. Results: After the intervention, the VO2max level was higher in the HIIT group (Mean= 24.28; SD= 5.42) than the SSC group (Mean= 21.66; SD= 6.99), but it was statistically non-significant (p= 0.503). Conclusion: Steady State Cardio and High Intensity Interval Training have comparable effect on cardiorespiratory fitness. Keywords: high intensity interval training, steady state cardio, cardiorespiratory fitness, VO2max Correspondence: Mei Kusumaningtyas. School of Health Polytechnics, Surakarta. Jl. Adi Sumarmo, Tohudan, Colomadu, Karanganyar, Indonesia. Email: meikusumaningtyas@gmail.com. Mobile: 085725646444 DOI: https://doi.org/10.26911/the7thicph.05.08
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Dhuma Ardhiyanto, Yanuar, Mr Widiyanto, and Samsul Mu'arif. "Reduction of LDL Cholesterol through MICT and HIIT in Rats." In Proceedings of the 2nd Yogyakarta International Seminar on Health, Physical Education, and Sport Science (YISHPESS 2018) and 1st Conference on Interdisciplinary Approach in Sports (CoIS 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/yishpess-cois-18.2018.3.

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ETECHEBERE, ALEXANDRE, MARA PATRICIA TRAINA CHACON MIKAHIL, ALEX CASTRO, MARCEL LOPES DOS SANTOS, ISABELLA RIGHI, ARTHUR AGOSTINHO FURLAN TEIXEIRA, and CLAUDIA R CAVAGLIERI. "ENERGY EXPENDITURE: IS HIGH INTENSITY INTERVAL TRAINING (HIIT) BETTER THAN CONTINUOUS AEROBIC TRAINING?" In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Campinas - SP, Brazil: Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51643.

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RIGHI, ISABELLA, MARA PATRICIA TRAINA CHACON MIKAHIL, ALEX CASTRO, Marcel Lopes Santos, and CLAUDIA R CAVAGLIERI. "TIME COURSE OF METABOLIC RESPONSES AFTER HIGH INTENSITY INTERVAL TRAINING (HIIT): METABOLOMIC STUDY." In XXV Congresso de Iniciação Cientifica da Unicamp. Campinas - SP, Brazil: Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78707.

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A. Hidayat, Amal, Mohammad Budiarto, and Lilik Herawati. "Three Weeks of High-Intensity Interval Training (HIIT) Decreases Visfatin Level on Overweight Men." In Surabaya International Physiology Seminar. SCITEPRESS - Science and Technology Publications, 2017. http://dx.doi.org/10.5220/0007335101740177.

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Heredia Ciuró, A., J. Martin Nuñez, A. Lazo Prados, A. Ortiz Rubio, A. Calvache Mateo, and M. C. Valenza. "Effect of HIIT-based interventions on exercise capacity in lung cancer survivors: Meta-Analysis." In ERS International Congress 2022 abstracts. European Respiratory Society, 2022. http://dx.doi.org/10.1183/13993003.congress-2022.3785.

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علان جود الله, حسن, رافع رشدي سلامه, ليث مالك اسماعيل, and ولاء وائل خضر. "أثر ثمانية أسابيع للتدريب الفتري مرتفع الشدة (HIIT) في بعض عناصر اللياقة البدنية المرتبطة بالصحة." In الملتقى العلمي الدولي المعاصر ‎‎‎للعلوم التربوية والاجتماعية والانسانية والادارية والطبيعية. شبكة المؤتمرات العربية, 2019. http://dx.doi.org/10.24897/acn.64.68.6010.

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Adelita, Sela Putri, Eti Poncorini Pamungkasari, and Bhisma Murti. "Meta Analysis: The Effect of High-Intensity Interval Training on Low Density Lipoprotein Level in Patients with Type 2 Diabetes Melitus." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.05.42.

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ABSTRACT Background: High intensity interval training (HIIT) is a protocol of short work intervals of vigorous to high intensity interspersed with active or passive (cessation of movement) recovery periods. HIIT has been employed since the mid-20th century to improve athletic exercise performance. Regular exercise reduces elevated low-density lipoprotein (LDL), atherosclerosis formation, and risk factors of cardiovascular disease (CVD). This study aimed to examine the effect of high-intensity interval training on low density lipoprotein level in patients with type 2 diabetes mellitus (DM). Subjects and Method: This was meta-analysis and systematic review. The study was conducted by search published article from year 2010 to 2020 in PubMed, Science Direct, Research Gate, and Google Scholar databases. The inclusion criteria were full text, using randomized controlled trial study design, high-intensity interval training intervention, and reporting mean and standard deviation. Study subjects were type 2 DM patients aged 25-65 years. The study outcome was LDL reduction. The articles were analyzed by PRISMA flow chart and Revman 5.3. Results: 7 studies from America, Europe, Australia, and Asia showed that high intensity interval training reduced LDL level in type 2 DM patients (Mean Difference= -0.06; 95% CI= 1.32 to -0.47; p<0.001) with I2= 92% (p <0.93). Conclusion: High-intensity interval training reduces LDL level in type 2 DM patients. Keywords: high-intensity interval training, low density lipoprotein Correspondence: Sela Putri Adelita. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java. Email: Selaadelita558@gmail.com. Mobile: 085357117517. DOI: https://doi.org/10.26911/the7thicph.05.42
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Reports on the topic "HIIT"

1

Li, T., C. Liu, and Y. Cui. DHCPv6 Prefix-Length Hint Issues. RFC Editor, May 2017. http://dx.doi.org/10.17487/rfc8168.

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Meade, Roger Allen, and August Lawrence Keksis. The Rock that Hit New York. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1329691.

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Kayaoglu, Barin. Turkish military hit by food poisoning scandal. Al-Monitor: The Pulse of the Middle East, June 2017. http://dx.doi.org/10.26598/auis_ug_is_2017_06_19.

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Knopp, Jeremy S., and Li Zeng. Statistical Analysis of Hit/Miss Data (Preprint). Fort Belvoir, VA: Defense Technical Information Center, July 2012. http://dx.doi.org/10.21236/ada565118.

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Oreopoulos, Philip, and Kjell Salvanes. How large are returns to schooling? Hint: Money isn't everything. Cambridge, MA: National Bureau of Economic Research, September 2009. http://dx.doi.org/10.3386/w15339.

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Mogul, J., and P. Leach. Simple Hit-Metering and Usage-Limiting for HTTP. RFC Editor, October 1997. http://dx.doi.org/10.17487/rfc2227.

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M. Wallace. Number of Waste Package Hit by Igneous Intrusion. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/838330.

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P.E. Sanchez. Number of Waste Package Hit by Igneous Intrusion. Office of Scientific and Technical Information (OSTI), June 2005. http://dx.doi.org/10.2172/850428.

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Bunn, Fred. Hit Probability of a High Velocity Tank Round. Fort Belvoir, VA: Defense Technical Information Center, March 1993. http://dx.doi.org/10.21236/ada262846.

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Granja, João, Christos Makridis, Constantine Yannelis, and Eric Zwick. Did the Paycheck Protection Program Hit the Target? Cambridge, MA: National Bureau of Economic Research, May 2020. http://dx.doi.org/10.3386/w27095.

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