Rozprawy doktorskie na temat „Thigh muscles”
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Sole, Gisela, i n/a. "Neuromuscular control of thigh and gluteal muscles following hamstring injuries". University of Otago. School of Physiotherapy, 2008. http://adt.otago.ac.nz./public/adt-NZDU20081103.100628.
Pełny tekst źródłaShaubari, Ezak Fadzrin Ahmad. "Automatic segmentation of the human thigh muscles in magnetic resonance imaging". Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/621007/.
Pełny tekst źródłaSilvestri, Chiara. "Development and validation of a knee-thigh-hip LSDYNA model of a 50th percentile male". Worcester, Mass. : Worcester Polytechnic Institute, 2008. http://www.wpi.edu/Pubs/ETD/Available/etd-042908-144927/.
Pełny tekst źródłaKeywords: active muscles, out-of-position, fracture mechanisms, impacts, KTH, dynamic ligament failure model. Includes bibliographical references (leaves 353-365).
Dragana, Golik-Perić. "Razlike u izokinetičkim parametrima natkolene muskulature u odnosu na bol u leđima". Phd thesis, Univerzitet u Novom Sadu, Asocijacija centara za interdisciplinarne i multidisciplinarne studije i istraživanja, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=101143&source=NDLTD&language=en.
Pełny tekst źródłaPain is a subjective, uncomfortable perception and feeling. Human often feelspain in the part of the body that is significantly away from the place of origin of pain.The transversal method was performed during study, with a one-time measurement.The study included 136 subjects, active players, ages 18-35 (20:49 ± 3.73) years. Allmeasurements were carried out from 2006 to 2016. Before the start of the test,examinee completed the survey on the existence of back pain, where the intensity ofthe pain was subjectively assessed according to Roland pain scale. The entire sample was stratified by proportional technique into five groups, based on the subjective experience of back pain. Multivariate variance method for detection of differences in the general system of sampled variables, during which it was established that there is a statistically significant difference between the groups of examinee, who were divided on the basis of subjective experience of back pain of the isokinetic variables that are taken into account in this study while the univariate analysis of variance determined differences in the individual variables. From the empirical findings above and relevant information from technical literature, an insight was obtained into the factors that influence the painful condition of a particular region, dysfunction and weakness of certain muscle groups, the impact of certain muscle groups on others, as well as the disruption in the kinetic chain of the locomotor apparatus. The research highlights the importance of and the need to standardize protocols and construct appropriate algorithms for comparative systematization of variables obtained by isokinetic dynamometry specific trials in subjects who are engaged in team sports with a ball (football, basketball, handball, etc.). The data will serve partially as part of the monitoring of sports training, as well as the effects of various parameters of training protocols on muscle strength in football. Sports and medical significance in the field of testing parameters with isokinetic muscle strength dynamometry is reflected in the prevention of sports injuries or in the quick and efficient diagnosis and treatment of the same, which significantly affects the economic aspect, considering that professional sport has become highly commercialized.
Chakouch, Mashhour. "Viscoelastic properties of in vivo thigh muscle and in vivo phantom using magnetic resonance elastography (MRE)". Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2236/document.
Pełny tekst źródłaSummary of the vitro studies. The objective of this in vitro study was to create a phantom witch the same muscle architecture (fiber, aponeurosis …) and mechanical properties of muscle in passive and active states. Two homogeneous phantoms were manufactured with different concentrations of plastisol to simulate the muscle elastic properties in passive (50% of plastisol) and active (70% of plastisol) muscle conditions. Moreover, teflon tubing pipes (D = 0.9 mm) were thread in the upper part of the phantom (50%) to represent the muscle fibers and a plastic sheet (8 x 15 cm) was also included in the middle of the phantom to mimic the aponeurosis structure. Subsequently, MRE tests were performed at 90Hz with two different pneumatic drivers, tube and round shapes, to analyze the effect of the type of driver on the wave propagation. The wavelength was measured from the phase images and the elastic properties (shear modulus) were calculated. Both phantoms revealed elastic properties which were in the same range as in vivo muscle in passive (2.40 ± 0.18 kPa) and active (6.24 ± 0.21 kPa) states. The impact of the type of driver showed higher values with the tube (range: 1.2 kPa to 1.53 kPa). The analysis of the wave behavior revealed a sliding along the plastic sheet as it was observed for in vivo muscle study. The wave was also sensitive to the presence of the fibers where gaps were identified. A new post processing method was established to measure G’ and G” from experimental multi frequencies (60, 80, 100 Hz) MRE (MMRE) tests and rheological models. This method was tested on the phantom (50%) made without fiber. Cross validation of the viscoelastic (G’, G”) results was made with Hyper-Frequency Viscoelastic Spectroscopy (HFVS). Both techniques showed similar range of values for G’ and G” at the same frequencies. This last result validated our new data processing for the viscoelastic measurement. Summary of the in vivo studies. The objective of this in vivo study was to develop MRE protocols to characterize the elastic properties (shear modulus) of the nine thigh muscles. These tests were performed at a single frequency (90Hz). Different shear moduli were found between the muscles. The gracilis revealed the highest elastic properties compared to all the other muscles. These different elasticities may be due to different physiological and architectural compositions between the tissues. Then the viscoelastic properties of the ischio (ST, SM, and BC) and Gr muscles were determined based on our new data-processing method (validated on the phantom 50%) using MMRE tests (70, 90 and 120Hz) and rheological models. The results revealed that two rheological models, zener and springpot, can be used to measure the viscoelastic properties in passive state. A similar trend was found between the experimental ratios G”/G’ obtained at 90 Hz and the α value of the springpot model. The present MRE muscle protocol, and the viscoelastic data base, could be used as non-invasive diagnostic tools to evaluate tissue alterations, the progression of diseases, and the effect of treatments, such as the ongoing therapeutic trials for Duchenne muscular dystrophy
Nuell, Turon Sergi. "Influence of thigh muscularity on sprint mechanical properties and performance = Influència del desenvolupament muscular de la cuixa sobre les propietats mecàniques de l’esprint i el rendiment". Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667536.
Pełny tekst źródłaLa capacitat d'esprintar es una de les qualitats més apreciades en la majoria d'esports, des de les curtes acceleracions típiques d'esports col·lectius a les extremes velocitats màximes de curses de velocitat de l'atletisme. La capacitat d'accelerar ràpidament i aconseguir velocitats molt altes sempre és una qualitat molt desitjada dins el món de l'esport. Tot i que molts factors influencien el rendiment en l'esprint, sembla que la capacitat de produir grans forces horitzontals durant l'esprint és el determinant més important. Aquesta capacitat inclou propietats mecaniques dels músculs, factors d'arquitectura i morfologia muscular, propietats del sistema nerviós, com també l'habilitat de l'atleta per orientar endavant aquestes forces. D'altra banda, és sabut que el volum muscular (MV) està estretament lligat a la capacitat de produir força i potència d'un múscul, llavors, sembla lògic pensar que músculs més grossos suposaran un avantatge per al rendiment en l'esprint. Malgrat això, l'engrandiment d'un múscul implica un augment del seu moment d'inèrcia, i així mateix, una reducció de l'acceleració i velocitat angular del segment, la qual cosa és contraproduent per al bon rendiment en l'esprint. Així, l'objectiu de la tesi va ser analitzar la influència del desenvolupament dels grups musculars de la cuixa (quadriceps, isquiosurals i adductors) sobre el rendiment en esprint, analitzant diferents poblacions amb diferent nivell de rendiment, així com estudiar l'adaptació d'aquests grups musculars a un període d'entrenament d'esprint en velocistes de nivell nacional. En el primer estudi (Estudi I), vam analitzar i comparar els MVs de la cuixa, les propietats mecàniques de l'esprint (SMPs) i el rendiment en un grup d'homes joves actius i entrenats i un grup d'homes velocistes. Els resultats d'aquest estudi van mostrar que els velocistes acceleraven molt millor que els actius (ES = 2,12- 3,68; P < 0,01), però, sobretot, van ser molt més ràpids a velocitats altes (ES = 4 ,53; P < 0,01). Els velocistes també van mostrar tenir els músculs de la cuixa més grossos que els actius (ES = 1,12-2,11; P < 0,01), especialment els isquiosurals. A més, es van trobar fortes correlacions entre l'MV dels isquiosurals i el rendiment (r = -0,670; P < 0,01) i moderades entre l'MV dels adductors i el rendiment (r = -0,530; P < 0,05). Basant-nos en les diferències entre MVs entre grups, es va concloure que l'MV dels isquiosurals juga un paper important en el rendiment en l'esprint. En el segon estudi (Estudi II) vam comparar MVs de la cuixa, SMPs i rendiment entre velocistes de diferents sexes. Els resultats revelaren que només l'MV dels isquiosurals diferia entre sexes, essent més gran en els homes (ES = 1,26; P < 0,05), mentre que el de quadriceps i adductors no presentaven diferencies. Els homes van ser molt més rapids que les dones (ES = 5,01-6,68; P < 0,001) i mostraren SPMs molt superiors (ES = 1,98-6,97; P < 0,01), especialment la velocitat màxima. lgual que en el primer estudi, es van trobar fortes correlacions entre l'MV dels isquiosurals i el rendiment (r = -0,685; P < 0,01) i moderades entre l'MV dels adductors i el rendiment (r = -0,530; P < 0,05). A mes, l'MV dels isquiosurals va correlacionar amb la velocitat maxima i no ho va fer amb la força màxima horitzontal, mentre que l'MV dels adductors va mostrar correlacions oposades. Després de tot, vam concloure que el desenvolupament muscular dels isquiosurals sembla més important que el dels adductors de cara al rendiment en l'esprint. A mes, l'MV dels isquiosurals sembla més important que el dels adductors per aconseguir velocitats molt altes. Finalment, en el tercer i ultim estudi (Estudi Ill) vam analitzar l'efecte d'un període d'entrenament específic d'esprint (SBTM) de 5 mesos sobre el rendiment, els MVs de la cuixa i les SMPs en velocistes de nivell nacional. Els atletes van ser sotmesos a tests abans, durant i després de l'SBTM. Els resultats mostren que els velocistes van millorar el rendiment en totes les distàncies analitzades (ES= 0,46-1,11; P < 0,01), juntament amb una millora de la velocitat màxima (ES = 0,40; P < 0,01) i un increment de la producció de forces horitzontals durant l'esprint (ES = 0,91; P < 0,01). A mes vam observar un patró hipertròfic molt consistent en quadriceps, isquiosurals i adductors, amb increments en l'MV durant la primera meitat del període i manteniment durant la segona meitat. També vam veure que !'augment en l'MV d'isquiosurals i adductors va ser pràcticament igual, i fou el doble que el dels quadriceps. Aquest increment tan gran en isquiosurals i adductors, comparat amb els quadriceps, podria estar relacionat amb el rol que tenen aquests grups musculars en el rendiment en l'esprint.
Affagard, Jean-Sébastien. "Identification des propriétés hyperélastiques des muscles de la cuisse à l'état passif : couplage des techniques de corrélation d'images aux techniques d'imagerie médicale". Phd thesis, Université de Technologie de Compiègne, 2013. http://tel.archives-ouvertes.fr/tel-00975741.
Pełny tekst źródłaSonnekalb, Sara. "Impact of different warm-up conditions on hamstring torque and power". Connect to this title online, 2005. http://www.oregonpdf.org.
Pełny tekst źródłaIncludes bibliographical references (leaves 38-44). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
Judkovich, Michael. "An Active Contour Approach for 3D Thigh Muscle Segmentation". Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1618866341802777.
Pełny tekst źródłaSkarpsno, Eivind Schjelderup. "The effect of delayed onset muscle soreness in quadriceps on habitual thigh muscle activity". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for nevromedisin, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25606.
Pełny tekst źródłaBeckham, G., Satoshi Mizuguchi, C. R. Carter, K. Sato, Michael W. Ramsey, H. S. Lamont, W. Guy Hornsby, G. Gregory Haff i Michael H. Stone. "Relationships of Isometric Mid-Thigh Pull Variables to Weightlifting Performance". Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/4120.
Pełny tekst źródłaWestdorp, Clayton Mathew. "The Influence of Focal Knee Joint Cooling on Thigh Neuromechanical Function". University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1556626975273872.
Pełny tekst źródłaEriksson, Anders. "Strenght training and anabolic steroids : a comparative study of the trapezius, a shoulder muscle and the vastus lateralis, a thigh muscle, of strength trained athletes". Doctoral thesis, Umeå : Umeå universitet, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-869.
Pełny tekst źródłaBulluck, Jonathan Kulas Anthony. "Influence of Thigh Muscle Forces on Anterior Cruciate Ligament Forces during Single-Leg Landing from Three Different Heights". [Greenville, N.C.] : East Carolina University, 2010. http://hdl.handle.net/10342/2711.
Pełny tekst źródłaHornsby, W. Guy, G. Gregory Haff, William A. Sands, Michael W. Ramsey, George K. Beckham i Michael H. Stone. "Alterations in Strength Characteristics for Isometric and Dynamic Mid-Thigh Pulls in Collegiate Throwers Across 11 Weeks of Training". Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/4618.
Pełny tekst źródłaJones, Robert Ian. "The influence of soccer-specific fatigue on the risk of thigh injuries in amateur black African players". Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001841.
Pełny tekst źródłaCarroll, Kevin M., Jake R. Bernard i Michael H. Stone. "Comparing Muscle Hypertrophy and Myosin Heavy Chain Content Between Relative Intensity and Repetition Maximum Resistance Training". Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/4575.
Pełny tekst źródłaPrior, Simon Mitchell. "An investigation into the influence of changes in static single leg standing posture on hip and thigh muscle activation in a pain free population". Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/580.
Pełny tekst źródłaAbbott, John. "Bilateral Muscle Oxygenation Kinetics In Response To Repeat Sprint Cycling In Strong And Weak Individuals". Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3696.
Pełny tekst źródłaSperlich, B., D. P. Born, K. Kaskinoro, K. K. Kalliokoski i Marko Laaksonen. "Squeezing the Muscle : Compression Clothing and Muscle Metabolism during Recovery from High Intensity Exercise". Mittuniversitetet, Avdelningen för hälsovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-18973.
Pełny tekst źródła:doi 10.1371/journal.pone.0060923
Suarez, Dylan G., Satoshi Mizuguchi, William Guy Hornsby, Aaron J. Cunanan, Donald J. Marsh i Michael H. Stone. "Phase- Specific Changes in Rate of Force Development and Muscle Morphology throughout a Block Periodized Training Cycle in Weightlifters". Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/6292.
Pełny tekst źródłaMendes, Sebastian B. "The Development of an Improved Finite Element Muscle Model and the Investigation of the Pre-loading Effects of Active Muscle on the Femur During Frontal Crashes". Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-theses/1007.
Pełny tekst źródłaPreimontaitė, Sigita. "Kineziterapijos ir grįžtamojo ryšio poveikis fantominiams skausmams ir šlaunies raumenų jėgai po šlaunies amputacijos". Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130910_110212-03259.
Pełny tekst źródłaThe object: effects of physiotherapy with mirror therapy for phantom pain and thigh muscle strength after transfemoral. The objective: the alteration of phant pain and thigh muscle after physiotherapy and mirror therapy. Hyptohesis: We consider, that the application of physiotherapy with mirror therapy helps to reduce phantom pain and improve muscle strenght better than physiotherapy without mirror therapy. The aims: 1. To compare phantom pain and muscle force in the beginning of physiotherapy and after physiothepy. 2. To compare phantom pain and muscle force in the beginning of physiotherapy and after physiotherapy with mirrot therapy. 3. To compare physiotherapy with mirror therapy and physiotherapy without mirror therpy for phantom pain and muscle force. Results: Beginning of the study, the control group subjects phantom pain score 6.17 ± 0.75, experimental group subjects - 6.83 ± 0.75 points. End of the study, the control group - 5.86 ± 0.75, experimental group - 5.17 ± 0.75 points. Before physical therapy in the control group after the amputation, the thigh muscle stretching force was 3.00 ± 0.00, flexion - 3.33 ± 0.52, attracting - 2.83 ± 0.51 and distracting - 2.50 ± 0.55 scores, the experimental group, the thigh, the muscle strength was 3.17 ± 0.47, stretching - 3.00±0.00, attracting - 2.67±0.47 and distracting-2.83±0.37 points. Application of physical therapy procedures, after 3 weeks, the control group, after the amputation, the thigh flexion strength was 4.33 ± 0... [to full text]
Graham, Daniel Joseph. "The Long Term Effects of Short-Wave Diathermy and Long-Duration Static Stretch on Hamstring Flexibility". Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd624.pdf.
Pełny tekst źródłaJUNQUEIRA, Ana Luiza Neto. "Ensaio clínica controlado e randomizado para avaliar a imunogenicidade e reatogenicidade da vacina contra hepatite B (butang(R)) aplicada em recém-nascidos na região glútea ou vasto lateral da cocha". Universidade Federal de Goiás, 2009. http://repositorio.bc.ufg.br/tede/handle/tde/1505.
Pełny tekst źródłaThis study is the first randomized controlled clinical trial for assessing the immunogenicity and reatogenicity of the Butang® vaccine in full term newborns, who were given the first vaccine dose within the first 12 hours of life, comparing two regions of application for the vaccine: anterolateral thigh (ALT) and ventrogluteal (VG). Butang® response was assessed in 224 newborns who were given the vaccine in the VG region and 250 in the ALT one. Both groups were similar regarding gender, weight, timing interval between doses of the vaccine and maternal characteristics. When comparing Butang® immunogenicity, we verified that the proportion of babies who developed anti-HBs protecting titres after three vaccine doses in the VG region was of 97.8% (IC 95%: 94.8 99.3) with geometric mean titer (GMT) of 427.5 mUI/mL (IC 95%: 344.9 530.0), similar to those who were given in the ALT region (97.6%; IC 95%: 94.8 99.1; GMT: 572.0 mUI/mL; IC 95%: 471.1 694.6), which provides evidence that this place is appropriate for hepatitis B vaccination. Eleven newborns did not respond to Butang®, being six of them vaccinated in the VG region and five in the ALT. The most of them were male, one factor which seems to interfere with hepatitis B vaccine response. We verified an increasing proportion of local reactions and fever according to the number of doses given. In addition, after the third dose the proportion of induration (4.0 vs. 11.4) was higher among babies who were given the vaccine in the ALT region when compared to those who were given in the VG region (p < 0,05). No association was observed concerning maternal anti-HBs titres and newborn vaccine response. The evidences of this study showed that the VG region is a safe and immunogenic site to hepatitis B vaccine administration in newborns.
Este estudo trata-se do primeiro ensaio clínico randomizado controlado, para avaliação da imunogenicidade e reatogenicidade da vacina Butang® em recém-nascidos a termo, que receberam a primeira dose da vacina nas primeiras doze horas de vida, comparando duas regiões de aplicação do imunógeno: ventro glútea (VG) e vasto lateral da coxa (VLC). A resposta à Butang® foi avaliada em 224 RN vacinados na região VG e 250 na VLC. Os dois grupos foram semelhantes quanto ao sexo, peso, intervalo de tempo entre as doses da vacina e características maternas. Ao comparar a imunogenicidade da Butang®, verificou-se que a proporção de crianças que desenvolveu títulos protetores de anti-HBs após a vacinação na região VG foi de 97,8% (IC 95%: 94,8-99,3) com média geométrica dos títulos (GMT) de anti-HBs de 427,5 mUI/mL (IC 95%: 344,9 530,0), sendo semelhante às vacinadas na região VLC (97,6%; IC 95%: 94,8 99,1; GMT: 572,0 mUI/mL; IC 95%: 471,1 694,6), evidenciando, portanto, esses locais como apropriados para a administração do imunógeno. Onze RN não responderam à Butang® com títulos protetores, sendo que cinco foram vacinados na região VG e seis na VLC. A maioria dessas crianças era do sexo masculino, um fator que parece interferir na resposta vacinal contra hepatite B. Em geral, observou-se uma proporção maior de reações locais e febre de acordo com o número de doses recebidas. Além disso, após a terceira dose da vacina, a proporção de enduração foi menor (4,0 vs. 11,4) em crianças vacinadas na região VG do que nas vacinadas na VLC (p < 0,05). Não foi observada qualquer associação entre títulos de anti-HBs maternos e resposta vacinal dos seus conceptos. As evidências deste estudo mostram que a região VG é um local seguro e imunogênico para a administração da vacina contra hepatite B em lactentes.
Hrysomallis, Con. "Anthropomorphic thigh for impact assessment". Thesis, 1996. https://vuir.vu.edu.au/15607/.
Pełny tekst źródłaMende, Gent N. "A comparison of the effects of stretch duration and repetitions on hamstring extensibility". Thesis, 1996. http://hdl.handle.net/1957/34176.
Pełny tekst źródłaGraduation date: 1997
Hsu, Hui-Ju, i 許惠茹. "Effect of stunning and boning treatments on quality characteristics of turkey breast and thigh muscle". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/71489184167743840055.
Pełny tekst źródłaWilderman, Danielle R. "Analysis of thigh muscle EMG and knee joint kinematics during a side-step pivot maneuver in agility-trained female basketball players". 2003. http://www.oregonpdf.org.
Pełny tekst źródłaIncludes bibliographical references (leaves 207-212). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
Mullen, Timothy J. "Muscle activity levels of three lower body sites during front squat and back squat exercises". 2004. http://www.oregonpdf.org.
Pełny tekst źródłaVetter, Karen Pamela Ruth. "Determination of structural and functional thigh muscle properties in a healthy older population using MRI and isokinetic dynamometry". Thesis, 2006. http://hdl.handle.net/2429/18343.
Pełny tekst źródłaMedicine, Faculty of
Graduate
FANG, YI-TING, i 方怡婷. "Exploring the Possible Effects of Mountaineering Activities on Sports Injuries, Body Composition, Thigh Muscle Function and Femoral Cartilage Characteristics". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90005765598512344170.
Pełny tekst źródła國立陽明大學
物理治療暨輔助科技學系
100
Background: Mountaineering and hiking have become a popular and common activity, but related researches in Taiwan focus mainly on physiological reactions much more than musculoskeletal system. However, the foreign experiments can’t transfer directly due to the unique forest environment in Taiwan, chronic mountaineering injuries and derivative benefits on specific physical performances wait for further study. Therefore, it is important to investigate the possible relation between mountaineering habit and musculoskeletal or knee cartilage changes. Purpose: This research compared the difference of sports injuries, body composition, thigh muscle function and femoral cartilage characteristics between different age groups and among different mountaineering experiences to explore the possible effects of mountaineering activities. Methods: This study was a cross-sectional, exploratory design. 84 healthy male were recruited, including 43 people with regular mountaineering habit, who divided into high-mountain group (HM) (55.6±4.27 y/o) and low-mountain group (LM) (57.2±3.4y/o), 21 age-matched men without exercise habit were allotted to no exercise group (NE) and the remainders were 21 young men in young group (YM) (57.2±3.4y/o). After signing a consent form, participants started to fill three questionnaires which were self-designed sports-related injuries questionnaire, WOMAC index and IPAQ short version, and then underwent physical examinations on body composition, knee flexors and extensors strength test, and footscan. Last procedure was ultrasound elastography evaluation over femoral cartilage. One-way ANOVA was employed to assess continuous data of four groups, differences before and after stress in four groups were examined with two-way repeated measures ANOVA, and multiple linear regression was used to identify the most significant prediction model for cartilage morphology. Statistical significant was set at P<0.05. Results: HM presented the best knee strength compared with weakest performances in NE and was significant higher in right knee flexors. About femoral cartilage thickness, YM showed the thickest cartilage and significant better than NE, but didn’t obvious differ from HM and LM. The percentage of vigorous activity showed correlation with R’t quadriceps muscle quality (MQ) (r=0.38) and L’t quadriceps MQ (r= 0.33). The predict factors of femoral cartilage thickness were age, height, strength of knee flexors and extensor, quantity of vigorous activity, and mountaineering; the predict factors of femoral cartilage brightness were muscle mass percentage in lower extremity (LE), body weight (BW) and asymmetry index (ASI). Conclusions: Knee strength, activity quantity, mountaineering performance, muscle mass percentage in LE, BW and ASI were predict factors to cartilage morphology and which can be improved by acquired cultivation. Besides, no obvious femoral cartilage defects were discovered in mountaineering groups and a tendency of decreasing aging rate was found in knee strength and thickness. Therefore, mountaineering and hiking can probably be a recommended sport to middle-old aged men who without existing knee cartilage dysfunction.
Naude, Wayne Stuart. "To investigate the effect of the simultaneous administration of Homoeopathic low potencies (4 CH) of phosphocreatine and glycogen on the anaerobic work capacity of human thigh muscle". Thesis, 1997. http://hdl.handle.net/10321/1841.
Pełny tekst źródłaThe purpose of this study was to investigate the effect of the administration of homoeopathic dilutions of phosphocreatine and glycogen on the anaerobic work capacity of humanthigh muscle. It was hypothesized that there would be an increase in the anaerobic work capacity after one week, and that this effect would persist for a further four weeks. The experimentwas performed according to the protocol of a double - blind clinical trial. The subjects were male caucasians between 17 and 23 years of age, all in good health for the duration of the test period. Sixteen subjects took doses of Phosphocreatine 4 CH and Glycogen 4 CH three times daily for 7 days (the experimental group). Twenty one different subjects took a placebo preparation at a similar dosage. The placebo preparation was 20 % ethanol in water, making it impossible to distinguish it by taste from the experimental preparation. Tests were performed on the Akron isokinetic tester. TIrree tests were performed by each subject: an initial test, and follow - up tests on days 7 and 35. The tests were in the form of explosive flexion and extension of the leg, with a maximum displacement of 195 degrees per second, for 30 seconds. The accumulated work done in flexion and extension was calculated. The subjects were instructed to continue in their normal lifestyle for the duration of the test period. Statistical analysiswas carried out, using the Wilcoxon signed - rank test to test for intra - group variation, and the Mann - Whitney U test to test for inter - group variation. Intra - group analysis of the variance revealed statistically significant increases in work done in the first and second follow - up tests for both the experimental and placebo groups. Inter - group analysis revealed that the groups were not statistically different in any of the parameters tested. Because the anaerobic work capacity increased in both the experimental and placebo groups, we conclude that the preparation was not the cause of the increase. We speculate that the increase could be due to psychological factors, such as differingresponses to motivation, and familiarity with the procedure in the follow - up tests, and physiological factors such as meals eaten or missed before the tests were performed.
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