Academic literature on the topic 'Downhill walking'
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Journal articles on the topic "Downhill walking"
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Gault, Mandy, Richard Clements, and Mark Willems. "Eccentric contraction-induced muscle injury does not change walking economy in older adults." Journal of Human Kinetics 27, no. 1 (March 1, 2011): 55–65. http://dx.doi.org/10.2478/v10078-011-0005-1.
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Eccentric contraction-induced muscle injury does not change walking economy in older adultsThe aim of the study was to examine whether self-selected walking speed during downhill treadmill walking by older adults would result in muscle injury and changes in physiological responses during level walking. Twenty-six participants (age: 67 ± 4 yrs; height: 1.69 ± 0.09 m; body mass: 74.9 ± 13.1kg) were assigned to level (n = 11, 30 min, 0%) or downhill walking (n=15, 30 min, -10%) at a self-selected walking speed. Self-selected walking speed and exercise intensity were similar for both groups (level: 4.2±0.4 km·hr-1, 42±6% VO2max; downhill: 4.6±0.6 km·hr-1, 44±15% VO2max). After 48-hours, downhill walking had reduced maximal voluntary isometric force of the m. quadriceps femoris (-15%, P<0.001), indicative of muscle injury, but no changes were observed for walking economy, minute ventilation, heart rate and respiratory exchange ratio during level walking. For older adults, downhill walking at a selfselected walking speed causes muscle injury without any detrimental effect on walking economy. Regular downhill walking at a self-selected walking speed by older adults is an eccentric endurance activity that may have the potential to improve cardiovascular fitness and muscle strength.
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Maeo, Sumiaki, Masayoshi Yamamoto, Hiroaki Kanehisa, and Kazunori Nosaka. "Prevention of downhill walking-induced muscle damage by non-damaging downhill walking." PLOS ONE 12, no. 3 (March 13, 2017): e0173909. http://dx.doi.org/10.1371/journal.pone.0173909.
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Bottoni, Giuliamarta, Dieter Heinrich, Philipp Kofler, Michael Hasler, and Werner Nachbauer. "The Effect of Uphill and Downhill Walking on Joint-Position Sense: A Study on Healthy Knees." Journal of Sport Rehabilitation 24, no. 4 (November 2015): 349–52. http://dx.doi.org/10.1123/jsr.2014-0192.
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Context:During sport activity, knee proprioception might worsen. This decrease in proprioceptive acuity negatively influences motor control and therefore may increase injury risk. Hiking is a common activity characterized by a higher-intensity-exercise phase during uphill walking and a lower-intensity-exercise phase during downhill walking. Pain and injuries are reported in hiking, especially during the downhill phase.Objective:To examine the effect of a hiking-fatigue protocol on joint-position sense.Design:Repeated measures.Setting:University research laboratory.Participants:24 nonprofessional sportswomen without knee injuries.Main Outcome Measures:Joint-position sense was tested at the beginning, after 30 min uphill walking, and after 30 min downhill walking on a treadmill (continuous protocol).Results:After downhill walking, joint-position sense was significantly worse than in the test at the beginning (P = .035, α = .05). After uphill walking, no differences were observed in comparison with the test at the beginning (P = .172, α = .05) or the test after downhill walking (P = .165, α = .05).Conclusion:Downhill walking causes impairment in knee-joint-position sense. Considering these results, injury-prevention protocols for hiking should focus on maintaining and improving knee proprioception during the descending phase.
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Oliveira, Thiago Pires de, Leonardo Coelho Rabello de Lima, Felipe Bruno Dias de Oliveira, Benedito Sérgio Denadai, and Camila Coelho Greco. "Efeito do treinamento de caminhada no declive em variáveis neuromusculares." Brazilian Journal of Kinanthropometry and Human Performance 20, no. 3 (June 20, 2018): 332–41. http://dx.doi.org/10.5007/1980-0037.2018v20n3p332.
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Walking involves small adjustments to maintain body balance. However, the demand for these adjustments may be different during downhill walking. The aim of this study was to analyze the effect of periodized downhill walking training on neuromuscular responses of knee flexors (KF). Seventeen active males (Age = 22.9 ± 3.9 years) were randomly assigned into two groups: control, level walking (CG, N = 8) and downhill walking (DWG, N = 9). Individuals performed the following procedures, in different days: 1) Maximal voluntary contractions to determine peak torque (PT) and rate of torque development (RTD) at different time intervals from the onset of muscle contraction. The test was performed before (Pre) and after (Post) a 4-week downhill walking training period. PT and peak RTD did not change after the training period (p > 0.05). However, there was significant increase in RTD at 150 ms and 200 ms after the onset of muscle contraction (p < 0.05). Additionally, the electromyographic activity (root mean square) of the biceps femoris and semitendineous muscles presented an increase after the training period (p < 0.05). Thus, downhill walking training can promote improvement RTD and muscle activity in the late phase of muscle contraction, which can have important implications during downhill walking, in which a rapid action of KF can help body balance against the disturbance generated by the slope.
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Camillo, Carlos Augusto, Chris Burtin, Miek Hornikx, Heleen Demeyer, Kristien De Bent, Hans van Remoortel, Christian R. Osadnik, Wim Janssens, and Thierry Troosters. "Physiological responses during downhill walking." Chronic Respiratory Disease 12, no. 2 (March 10, 2015): 155–64. http://dx.doi.org/10.1177/1479972315575717.
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Allam, Hatem H., Alaa Shafie, Abdulrahman J. Almalki, Dhefallal E. Almalki, Tarek Alsayad, Ahmed M. Alziyadi, Mosfer A. Al-walah, and Lamiaa K. Elsayyad. "Effect of Application of Repeated Downhill Walking Bouts on Ankle Isokinetic Parameters in Children with Obesity." Applied Bionics and Biomechanics 2022 (January 28, 2022): 1–7. http://dx.doi.org/10.1155/2022/1128794.
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Background. Obesity among children became of high concern. Obesity can affect many health aspects including muscular strength. Downhill walking is a useful intervention to enhance muscular strength, especially in older adults. Objective. The current study’s purpose was to investigate the effect of repeated bouts of downhill walking on ankle isokinetic parameters in children with obesity. Methods. 32 obese male children aged from 8 to 12 years engaged in the study. The children were divided into two groups: the level walking group (LWG) ( n = 16 ) and the downhill walking group (DWG) ( n = 16 ). Participants in both groups walked 20 minutes on the treadmill, two sessions per week for 6 weeks, with a speed of 5 km/h, and the treadmill slope used for the DWG was set at –20%. Isokinetic dynamometry (Cybex 6000) was used to analyze the normalized eccentric and concentric torque of both ankle dorsiflexors and plantar flexors of the dominant leg in all participants. Results. The normalized peak torques for eccentric plantar flexion, concentric plantar flexion, eccentric dorsiflexion, and concentric dorsiflexion significantly increased by 38.66%, 23.87%, 38.58%, and 15.51%, respectively, after repeated bouts of downhill walking. Level walking resulted in nonsignificant improvement in the muscular torques. Conclusion. Downhill walking is a beneficial intervention in improving ankle muscular torques of obese children.
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Huang, Yu-Ping, Kwantae Kim, Chen-Yi Song, Yat-Hon Chen, and Hsien-Te Peng. "How Arch Support Insoles Help Persons with Flatfoot on Uphill and Downhill Walking." Journal of Healthcare Engineering 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/9342789.
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The main purpose of this study was to investigate the effect of arch support insoles on uphill and downhill walking of persons with flatfoot. Sixteen healthy college students with flatfoot were recruited in this study. Their heart rate, peak oxygen uptake (VO2), and median frequency (MDF) of surface electromyogram were recorded and analyzed. Nonparametric Wilcoxon signed-rank test was used for statistical analysis. The main results were as follows: (a) peak VO2significantly decreased with arch support insoles compared with flat insoles during uphill and downhill walking (arch support insole versus flat insole: uphill walking, 20.7 ± 3.6 versus 31.6 ± 5.5; downhill walking, 10.9 ± 2.3 versus 16.9 ± 4.2); (b) arch support insoles could reduce the fatigue of the rectus femoris muscle during downhill walking (MDF slope of arch support insole: 0.03 ± 1.17, flat insole: −6.56 ± 23.07); (c) insole hardness would increase not only the physical sensory input but also the fatigue of lower-limb muscles particularly for the rectus femoris muscle (MDF slope of arch support insole: −1.90 ± 1.60, flat insole: −0.83 ± 1.10) in persons with flatfoot during uphill walking. The research results show that arch support insoles could effectively be applied to persons with flatfoot to aid them during uphill and downhill walking.
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Akpinar, Berkcan, Eric Thorhauer, Scott Tashman, James J. Irrgang, Freddie H. Fu, and William J. Anderst. "Tibiofemoral Cartilage Contact Differences Between Level Walking and Downhill Running." Orthopaedic Journal of Sports Medicine 7, no. 4 (April 1, 2019): 232596711983616. http://dx.doi.org/10.1177/2325967119836164.
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Background: Some studies have suggested that altered tibiofemoral cartilage contact behavior (arthrokinematics) may contribute to long-term cartilage degeneration, potentially leading to tibiofemoral osteoarthritis. However, few studies have assessed normal tibiofemoral arthrokinematics during dynamic activities. Purpose: To characterize tibiofemoral arthrokinematics during the impact phase of level walking and downhill running. Study Design: Descriptive laboratory study. Methods: Arthrokinematic data were collected on uninjured knees of 44 participants (mean age, 20.7 ± 6.6 years). Using a dynamic stereoradiographic imaging system with superimposed 3-dimensional bone models from computed tomography and magnetic resonance imaging of participant-specific tibiofemoral joints, arthrokinematics were assessed during the first 15% of the gait cycle during level walking and the first 10% of the gait cycle during downhill running. Results: During level walking and downhill running, the medial compartment had a greater cartilage contact area versus the lateral compartment. Both compartments had a significantly less cartilage contact area during running versus walking (medial compartment gait cycle affected: 8%-10%; lateral compartment gait cycle affected: 5%-10%). Further, medial and lateral compartment tibiofemoral contact paths were significantly more posterior and longer during downhill running. Conclusion: There was a decreased tibiofemoral cartilage contact area during downhill running compared with level walking, suggesting that underlying bone morphology may play a key role in determining the size of cartilage contact regions. Clinical Relevance: This study provides the first data characterizing tibiofemoral cartilage contact patterns during level walking and downhill running. These results provide evidence in support of performing biomechanical assessments during both level walking and downhill running to obtain a comprehensive picture of tibiofemoral cartilage behavior after clinical interventions.
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Holm, Jonathan K., Jonas Contakos, Sang-Wook Lee, and John Jang. "Energetics and Passive Dynamics of the Ankle in Downhill Walking." Journal of Applied Biomechanics 26, no. 4 (November 2010): 379–89. http://dx.doi.org/10.1123/jab.26.4.379.
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This study investigated the energetics of the human ankle during the stance phase of downhill walking with the goal of modeling ankle behavior with a passive spring and damper mechanism. Kinematic and kinetic data were collected on eight male participants while walking down a ramp with inclination varying from 0° to 8°. The ankle joint moment in the sagittal plane was calculated using inverse dynamics. Mechanical energy injected or dissipated at the ankle joint was computed by integrating the power across the duration of the stance phase. The net mechanical energy of the ankle was approximately zero for level walking and monotonically decreased (i.e., became increasingly negative) during downhill walking as the slope decreased. The indication is that the behavior of the ankle is energetically passive during downhill walking, playing a key role in dissipating energy from one step to the next. A passive mechanical model consisting of a pin joint coupled with a revolute spring and damper was fit to the ankle torque and its parameters were estimated for each downhill slope using linear regression. The passive model demonstrated good agreement with actual ankle dynamics as indicated by low root-mean-square error values. These results indicate the stance phase behavior of the human ankle during downhill walking may be effectively duplicated by a passive mechanism with appropriately selected spring and damping characteristics.
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WANTA, D. M., F. J. NAGLE, and P. WEBB. "Metabolic response to graded downhill walking." Medicine & Science in Sports & Exercise 25, no. 1 (January 1993): 159–62. http://dx.doi.org/10.1249/00005768-199301000-00022.
Full textDissertations / Theses on the topic "Downhill walking"
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Rogers, Emily Ann. "Assistive Exoskeleton for Injury Prevention During Downhill Walking." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14398554.
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This thesis presents a device designed to reduce muscular effort during downhill walking. The designed solution is a soft wearable exoskeleton consisting of an air spring, a wearable soft fabric interface that attaches the air spring to the user's body, and an integrated smart sensing and pneumatic control system. After prototyping of the device, initial evaluation was performed, showing that the device successfully produced a resistive torque of 5 Nm, decreasing torque on the knee by 10% for a 58 kg individual on a -20 degree slope. Following initial evaluation, human subject testing was conducted in order to determine the effect of the device on muscle activity and gait. Initial results show that on a -5 degree slope, the device can reduce muscle activity by up to 17%. Additionally, joint angle data showed that there were no substantial negative effects on the users natural gait pattern. This device is a low-cost solution that will help the active, elderly, and physically impaired alike by decreasing muscle fatigue, decreasing risk of overuse injuries, increasing independence, and improving overall quality of life.
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Ahmadi, Sirous. "Monitoring muscle oxygenation and myoelectric activity after damage-inducing exercise." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/2240.
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In this thesis, three experiments were conducted to monitor: (i) muscle oxygenation and electromyographic activity of the biceps brachii after exercise-induced muscle damage (ii) muscle oxygenation after downhill walking-induced muscle damage, and, (iii) muscle oxygenation following a bout of vigorous concentric exercise. Maximal eccentric exercise (EE) of biceps brachii resulted in significantly increased mean resting oxygen saturation and decreased deoxyhaemoglobin. During isometric contractions at 50% and 80% of subjects’ maximum voluntary torque (MVT), oxygen desaturation and resaturation kinetics and volume were significantly decreased after EE, and these declines were significantly prevalent over the following 6 days. Additionally, a significant shift in median frequency intercept (measured by electromyography; EMG) towards lower frequencies was observed during isometric contractions at both 50% and 80% MVT after EE in the exercised arm. After an exhaustive session of downhill walking, another form of EE, resting total haemoglobin and oxyhaemoglobin decreased. Furthermore, during isometric contractions at 30%, 50% and 80% of MVT, prolonged and significant increases were observed in oxygen desaturation and resaturation kinetics and volumes after ambulatory EE. In contrast to the two EE experiments, concentric contractions did not evoke any prolonged changes in muscle oxygenation. Collectively, the findings of this thesis revealed significant and prolonged changes in muscle oxygenation at rest and during exercise, following sessions of strenuous eccentric exercise. Although not clear, the possible mechanism responsible for the changes in muscle oxygenation after EE could be increased resting muscle oxygen utilization due to probable muscle damage and a subsequent requirement of energy demanding repair processes. Concentric exercise resulted in fatigue, but it did not affect muscle oxygenation. Although a prolonged reduction in EMG median frequency intercept was observed after EE, this was not closely time-associated with the biochemical, anthropometric or functional markers of muscle damage.
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Ahmadi, Sirous. "Monitoring muscle oxygenation and myoelectric activity after damage-inducing exercise." University of Sydney, 2007. http://hdl.handle.net/2123/2240.
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Doctor of PhilosophyIn this thesis, three experiments were conducted to monitor: (i) muscle oxygenation and electromyographic activity of the biceps brachii after exercise-induced muscle damage (ii) muscle oxygenation after downhill walking-induced muscle damage, and, (iii) muscle oxygenation following a bout of vigorous concentric exercise. Maximal eccentric exercise (EE) of biceps brachii resulted in significantly increased mean resting oxygen saturation and decreased deoxyhaemoglobin. During isometric contractions at 50% and 80% of subjects’ maximum voluntary torque (MVT), oxygen desaturation and resaturation kinetics and volume were significantly decreased after EE, and these declines were significantly prevalent over the following 6 days. Additionally, a significant shift in median frequency intercept (measured by electromyography; EMG) towards lower frequencies was observed during isometric contractions at both 50% and 80% MVT after EE in the exercised arm. After an exhaustive session of downhill walking, another form of EE, resting total haemoglobin and oxyhaemoglobin decreased. Furthermore, during isometric contractions at 30%, 50% and 80% of MVT, prolonged and significant increases were observed in oxygen desaturation and resaturation kinetics and volumes after ambulatory EE. In contrast to the two EE experiments, concentric contractions did not evoke any prolonged changes in muscle oxygenation. Collectively, the findings of this thesis revealed significant and prolonged changes in muscle oxygenation at rest and during exercise, following sessions of strenuous eccentric exercise. Although not clear, the possible mechanism responsible for the changes in muscle oxygenation after EE could be increased resting muscle oxygen utilization due to probable muscle damage and a subsequent requirement of energy demanding repair processes. Concentric exercise resulted in fatigue, but it did not affect muscle oxygenation. Although a prolonged reduction in EMG median frequency intercept was observed after EE, this was not closely time-associated with the biochemical, anthropometric or functional markers of muscle damage.
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Wanta, Daniel. "Metabolic responses to graded downhill walking." 1989. http://catalog.hathitrust.org/api/volumes/oclc/20586042.html.
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Thesis (M.S.)--University of Wisconsin--Madison, 1989.Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 22-24).
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Lei, Po-Chin, and 雷伯欽. "Biomechanical Analysis of Downhill Walking Using Hiking Poles with Loading." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/36492502696352829264.
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碩士國立臺北教育大學
體育學系碩士班
98
The purpose of this study was to compare and analysis the changes of downhill walking using hiking poles with loading in kinematical, dynamics and lower limbs electromyographic (EMG) parameters. The experiment subjects are 8 healthy male adults (age:20±2 years old, height:174.6.0±6.91cm,weight:65.9± 5.03kg) . A Mega speed 35k high-speed camera (100Hz) , an AMTI force plate (1000Hz) and a Biovision EMG system(1000Hz) are used to synchronously capture kinematical, dynamics and lower limbs EMG parameters during the subjects downhill walking with loading in one gait cycle. Kinematical parameters are filmed through the camera, then the obtain film undergoes human limb sections of parameter organization system, Direct Linear Transformation and filter by the Kwon3D movement analysis software, in order to obtain the parameters such as gait cycle, trunk forward inclination angle, hip, knee, ankle of joint angle and center of mass height. The original signal from the force plate, processed by DASYLab 6.0 software to low-pass filtering (10Hz) and calibrate modular, calculates the original ground reaction forece. Body weight (B.W) is used as the basis for standardization to obtain ground reaction force values and impulse values. The original signal of EMG from Rectus femoris (RF), Biceps femoris long head (BF), Tibialis anterior (TI) and Gastrocnemius lateral head (GAS) is processed by DASYLab 6.0 software to band-pass (10-500Hz), full-wave rectification and low-pass filtering (10Hz), after using the formula root mean square (RMS) to get the RMS value, divided by the RMS value of maximum voluntary contraction (middle 3 seconds) as the basis for standardization (100%). The resulting data undergoes Paired t test via SPSS 12.0 statistics software, The level of significance for this experiment is set to α=.05. The result are : 1. The gait cycle, stand phase of hip, knee, ankle joint average angle, trunk forward inclination angle, were significantly different (p<.05). 2. The first peak force (FPF), second peak force (SPF), average loading rate of vertical ground reaction force, and propulsion force peak of horizontal ground reaction force, propulsion impulse were significantly different (p<.05). 3. The average EMG of TI and GAS in the braking phase and the average EMG of TI and GAS in the propulsion phase reached the significant difference (p<.05). According to the results analyzed, we conclude that: It appears that hiking actors downhill walking using hiking poles with loading can decrease the vertical ground reaction force, horizontal ground reaction force, impulse, maximal loading rate,and recruited less motor units. Therefore,downhill walking using hiking poles can reduce lower limbs impulse and lower extremity muscles fatigue.
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Chang, Hsiang-Tso, and 張香佐. "The Biomechanical Analysis of Different Backpack Load During Downhill Walking." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/77065042170937916473.
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碩士國立臺北教育大學
體育學系碩士班
98
Abstract Objective: To examine four different backpack load (0%, 10%, 15% and 20%) on the downhills of Kinematic, kinetic and EMG parameters in the case. Methods : Eight male students from the National Taipei University of Education without a history of injury of lower limb without any department of Physical Education, aged 20.4 ± 0.52 years, height 175.9 ± 7.06 cm, weight 20.4 ± 0.52 kg. Mega speed 25k to a high-speed camera (100Hz) along the sagittal plane of the subjects carried out two-dimensional film, combined with one AMTI force plate (1000Hz) and Biovision EMG (1000Hz) to retrieve synchronization subjects Walking backpack load in different downhills of the gait. Video motion analysis software to Kwon3D processing, formed by the human body segment parameters, direct linear transformation and filtering, to obtain stance phase of the hip, knee, ankle joint angle, trunk angle forward, time, speed of cylinders. Force plate analysis of the raw signal through the DASYLab 6.0 software, filtered, get the raw ground reaction force , and body weight (Body Weight; BW) as the standard. EMG analysis of the DASYLab 6.0 software rectus femoris, biceps femoris, tibialis anterior, gastrocnemius and other muscles of the raw EMG was conducted after the 10-500Hz of band-pass filtering by full-wave rectifier on the turn, rate of 10 Hz low-pass wave smoothing processing, and then the integrated operation, the availability of integral EMG amplitude (IEMG), and subjects itself to the role of the maximal voluntary contraction of muscle EMG amplitude normalized. SPSS 12.0 statistical information to the Chinese version of the software for single-factor repeated measures analysis of variance (one-way ANOVA), significance level set at α =. 05. Results: First, under different rate on the downhill angle of movement of the trunk forward in time there are significant differences (p <.05); Seconf, the first peak vertical ground reaction force, impulse significant difference (p <.05); Third, the braking phase on the standardization of the rectus femoris and gastrocnemius muscles parameters, reaction parameters of the propulsive phase gastrocnemius muscle were significantly different standard (p <.05). Conclusion: The rate of 15% of the backpack load on the downhills under the action, it will increase the angle of the body of the trunk forward, stance time, vertical ground reaction force, the heel contacts need to be more slow speed, and the need to recruit more motor units, long Time off may be the phenomenon of muscle fatigue, therefore recommends that the downhill movement in the backpack when under the backpack load of not more than 10% BW is appropriate. Key words: backpack load,downhill, EMG
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Lee, Ya-Yun, and 李亞芸. "The Effects of Downhill Walking Training in Patients with Parkinson's Disease." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/09783522769997312371.
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碩士國立陽明大學
物理治療學系暨研究所
95
Background and purpose: Weak muscle strength, stooped posture, and gait disturbance are important problems in patients with Parkinson’s disease (PD). In healthy subjects, greater efforts of lower extremities are required during downhill walking than during level walking. In addition, downhill walking induces a more upright posture and faster walking speed than level walking. However, no study has evaluated the effects of downhill walking in patients with PD. The purpose of the present study is to investigate the training effect of downhill walking in patients with PD. Methods: Thirty-one subjects with a diagnosis of idiopathic PD were randomly assigned to experimental (n=16) or control (n=15) group. The PD subjects were classified as stageⅠ through Ⅲ on the Hoehn and Yahr disease rating scale. The experimental group received downhill treadmill training, while the control group received regular physical therapy. Both treatment programs were conducted 3 times a week for four weeks (a total of 12 sessions). All subjects received the baseline, post-treatment, and 1-month follow-up assessment. Main outcome measures included muscle strength of trunk and lower extremities, static and dynamic thoracic kyphotic curve, functional balance ability, gait performance in both comfortable and fast walking speed, and the confidence level of not falling when performing activities of daily living (ADLs). Number of fallers was recorded after the treatment for 6 months. Pair t test was used to examine the within-group improvement. Multivariate analysis of variance or independent t was used to determine differences of mean change scores of the dependent variables between groups. A significant level of P<0.05 was set for all analyses. Number of fallers was presented in raw data. Results: In within-group comparisons, the subjects in the experimental group showed significant improvement in the muscle strength of trunk extensors, bilateral knee extensors, knee flexors, and ankle plantarflexors. The experimental group also improved significantly in functional balance, gait performance, and confidence level of not falling. No significant improvement was found in the static and dynamic thoracic kyphotic curve. The improvement of muscle strength in trunk extensors and left ankle plantarflexors, functional balance, gait performance, and confidence level maintained one month after training. The control group only showed significant within-group improvement in left knee extensors’ muscle strength, and the confidence level of not falling after treatment. And no improvement maintained in the follow-up test of control group. There was a significant between-group difference in gait performance in both comfortable and fast walking speed. The percentage of the number fallers after treatment was less in the experimental group than the control group. Discussion and Conclusion: Our results suggested that downhill walking training on a treadmill could be beneficial to patients with PD. It can efficiently improve trunk and lower extremities’ muscle strength, functional balance ability, gait performance, and the confidence level of not falling when performing ADLs. Downhill walking training may also reduce the falling risks of patients with PD. Therefore, downhill walking training may be considered as another treatment strategy in clinical applications.
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Chan, Wen-Hsiang, and 詹文祥. "Characteristics of Elderly Self-selected Walking Speed with Different Downhill in Gait." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/58902839556155692969.
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碩士國立體育大學
運動科學研究所
100
The Downhill sport was eccentric exercise by the muscle deterioration elderly, because the muscle can’t to change movement. The aim of study was to gait characteristics eight elderly subjects self-selected walking speed with different downhill (-5%、-7%、-9%) by kinematics and kinetics. The movements were measured by Vicon Analysis System (100Hz), EMED-Pedar Gait Pressure System (100Hz), BTS Bioengineering Systems (1000Hz). The processed EMG data was compared with muscle activity estimated by the muscle-skeletal model. The validation was quantified in one ways, the correlation coefficient and the mean absolute error (MAE). This resulted in an average correlation coefficient and an average of the average MAE 0.067, the data between 0.037 and 0.254. If the MAE value is more close to zero that means the Simulation is close to the truly situation in life. Downhill 7% correlation coefficient the simulation ground reaction force with result different in Pedar data. The result showed that gait (gait strength, gait frequency, joint angle, joint angle-angle) was similar and EMG data, the firing sequences was rectus femoris, > gastrocnemius > anterior tibial > biceps femoris in muscle. The different joint reaction force close in downhill, the peak was to appear at stance phase, along with descend at swing phase. By the reason aforementioned, elderly can below walking downhill 9% , because muscle and gait change not obviously. In addition, a further research is suggested to add slop with truth ground.
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Wang, Hsin-Chieh, and 王信傑. "Effect of Different Shoes on Lower Extremity motion and force loading During Walking downhill." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/08164013029873131172.
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碩士國立臺北教育大學
體育學系碩士班
104
Purpose: To explore the effect of jogging shoes, minimalist footwear and barefoot on lower extremity movement and force load during walking downhill. Methods: Subjects were twelve healthy adult male(age: 19.75±0.9 years old, height: 180.5±3.46 cm, weight: 79.97±4.96 kgws) without a history of lower extremity pain wuthin six months. A Mega Speed Ms30k high-speed camera (100Hz), along the sagittal plane of the subjects carried out two-dimensional film, combined with a AMTI force plate (1000Hz), to capture synchronously capture the movements of stance phase walking on -12° slope. The film Kwon motion analysis system to process, through the human body segment parameters(BSP) build, KwonCC reference frame correction, reference body segment parameters, direct linear trasformation (DLT) and quantified to obtain kinematic parameters; force plane signal combining the original Dasy Lab 6.0 analysis software, by the filter (Filter), module calibration (Scaling) to obtain the ground vertical component, horizontal component and the pressure center displacement values, and using the method of inverse dynamics to obtain the force and joint torque of lower limb joints. In order to help statistical comparison, the original pitch measurement standard (Normalize), to body weight ratio (Body Weight, B.W) said. The experimental parameters were used SPSS for Windows 18.0 software package for repeated measures ANOVA analysis of the statistical analysis (a=.05). Results: 1.different shoes during walking downhill in lower limb ankle and knee maximum flexion were statistically significant differences (p <.05), barefoot had maximum ankle flexion 14.31 ± 6.81 ° 2. different shoes during walking downhill in ankle plantarflexion and dorsiflexion were statistically significant differences (p >.05). 3. different shoes during walking downhill, the vertical displacement of body center of gravity variation were statistically significant different (p <.05). 4. different shoes during walking downhill, the GRF and loading rates were statistically significant different (p <.05), jogging shoes had maximum of GRF 1.54 ± 0.14 B.W. minimalist footwear had maximum of loading rates 11.72 ± 4.38 B.W. 5. different shoes during walking downhill, COP displacement in righ-left direction was statistically significant different (p <.05). 6. different shoes during walking downhill, net muscle joint momemt of ankle and knee were statistically significant different (p <.05), minimalist footwear had maximum net muscle joint momemt of ankle -1.26±0.53 N.m*Kg-1, jogging shoes had maximum net muscle joint momemt of knee 2.86±0.49 N.m*Kg-1. 7. different shoes during walking downhill, total as negative work of ankle and knee were statistically significant different (p <.05), jogging shoes had maximum total as negative work of ankle 7.11±2.21 J*Kg-1, jogging shoes had maximum total as negative work of knee 142.3±20.5 J*Kg-1. 8. different shoes during walking downhill, total as positive work of ankle and knee were statistically significant different (p <.05). 9. different shoes during walking downhill, energetics percentage of hip , knee and ankle were statistically significant different (p <.05), jogging shoes had maximum energetics percentage of ankle 3.18±1.22%, jogging shoes had maximum energetics percentage of knee 65.44±3.87%, minimalist footwear had maximum energetics percentage of hip 38.7±5.35%. Conclusion: When wearing minimalist footwear walk downhill, had greater degree of flexion ankle, so the ankle had better flexibility and greater net muscle joint moment. But that increase the chance of ankle injury. Minimalist footwear and barefoot took soft landing method during walking downhill. Jogging shoes took stiff landing method during walking downhill. We proposed that the hip extensors showed major contributions to energy absorption during soft landing strategy for minimalist footwear and barefoot, and increased the use of ankle plantar flexors and knee flexion muscles to energy absorption during stiff landing strategy for jogging shoes. Recommendations above can effectively reduce the risk of injury.
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Chang, Su-Yu, and 張書瑜. "Using Accelerometer and Gyro to Recognize Ascending and Descending Stairs as well as Uphill, Downhill and Level Walking." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/65391958513491001691.
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碩士國立臺灣師範大學
運動科學研究所
102
Purpose: Nowadays, we used digital sensors to calculate energy consumption only by the value of acceleration and the numbers of step. These methods might not be accurate with similar movements. Therefore, this study was designed to use accelerometer and gyro to recognize ascending and descending stairs as well as uphill, downhill, and level walking. Method: This study included 30 healthy subjects. The sensor was stabilized outside the shoe at left ankle. Subjects were asked to perform 7 movements including ascending/descending stairs (two different stairs), uphill, downhill, and level walking. All the accelerometer and gyro data were smoothed by a 10 Hz low-pass filter. One-way ANOVA was used to determine the difference among movements. Result: The angular velocity of ankle dorsi/plantar flexion at heel contact showed significant difference among the 7 movements, only downhill and level walking, uphill and upstairs, as well as upstairs (low) and upstairs (high) showed no significant difference. Therefore, the angular velocity of ankle dorsi/plantar flexion should be the indicator to determine activities on different landforms.
Books on the topic "Downhill walking"
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1941-, Williams Linda, ed. Downhill walking Switzerland. Tulsa, Okla: Old World Travel, 1988.
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Price, Clive. Mostly downhill in the Peak District: the White Peak. Wilmslow: Sigma Leisure, 1994.
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Price, Clive. Mostly downhill in the Peak District: the Dark Peak. Wilmslow: Sigma Leisure, 1994.
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Metabolic responses to graded downhill walking. 1990.
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Metabolic responses to graded downhill walking. 1989.
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Downhill all the Way: Walking with Donkeys on the Stevenson Trail. Frances Lincoln, 2006.
Find full textBook chapters on the topic "Downhill walking"
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Sakurai, Shinji, Markus Kuster, and Graeme A. Wood. "Why Do Lower Limb-Deficient People Have Difficulty in Downhill Walking?—Kinetics of Downhill Versus Level Walking." In Adapted Physical Activity, 155–58. Tokyo: Springer Japan, 1994. http://dx.doi.org/10.1007/978-4-431-68272-1_25.
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Dostoevsky, Fyodor. "Chapter 2." In Devils. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199540495.003.0010.
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1 He walked along Bogoyavlenskaya Street; finally the road went downhill, he was walking in mud, and suddenly the wide, misty, as it were empty expanse of the river opened up in front of him. Houses gave way to hovels and the street vanished...
Conference papers on the topic "Downhill walking"
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Matsumoto, Keigo, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. "Walking uphill and downhill." In SIGGRAPH '17: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3102163.3102227.
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Asano, Fumihiko, Toshiaki Saka, and Tetsuro Fujimoto. "Passive dynamic walking of compass-like biped robot on slippery downhill." In 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2015. http://dx.doi.org/10.1109/iros.2015.7353958.
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Camillo, Carlos Augusto, Christian Osadnik, Matthias Loeckx, Fernada M. M. Rodrigues, Miek Hornikx, Heleen Demeyer, Stephanie Everaerts, et al. "Effects of a training program including downhill walking in COPD: A randomized controlled trial." In ERS International Congress 2016 abstracts. European Respiratory Society, 2016. http://dx.doi.org/10.1183/13993003.congress-2016.oa1517.
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Okita, Nori, and H. J. Sommer. "A Novel Gait and Foot Slip Detection Algorithm for Walking Robots." In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6021.
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A novel gait and slip detection algorithm for walking robots using an inertial measurement unit was developed. An unscented Kalman filter was formulated with a simple dynamic model as a block on a slope without translations. Considerable prediction errors resulted when unmodeled dynamics (i.e., translation) occurred. These prediction errors were used in a binary Bayes filter to estimate the probability of gait and slip states. A proof of concept experiment was conducted with a monopedal walker under three floor conditions (nonslip, poly, and poly-oil) and three orientations (flat, uphill, and downhill). Realtime and offline detection at 100 Hz were successful. Continuous gait cycles were detected in proper order. Slip detection was successful except for very mild slips involving small jerk. The proposed algorithm provided a robust gait and slip detection method with a single set of parameters without knowledge of floor conditions and inclinations.
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Asano, Fumihiko, Toshiaki Saka, and Yuji Harata. "3-DOF passive dynamic walking of compass-like biped robot with semicircular feet generated on slippery downhill." In 2016 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2016. http://dx.doi.org/10.1109/icra.2016.7487539.
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Safak, Koray K. "Dynamics and Stability of Locomotion for Actively Powered Simplest Walkers." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59255.
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In this paper we explore methods to achieve actively powered walking on level ground using a simple 2D walker model. The walker is activated either by applying equal joint torques at hip and ankle, or by an impulse applied at toe-off immediately before heel-strike, or by the combination of both. We show that activating the walker by equal joint torques at hip and ankle on level ground is equivalent to the dynamics of the passive walker on a downhill slope. We calculate the stability of the gait cycle by an analytical approximation to the Jacobian of the walking map. Results indicate that short-period gait cycle always has an unstable eigenvalue, whereas stability of the long-period gait cycle depends on the selection of initial stance angle.
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Osadnik, Christian, Carlos Augusto Marcal Camillo, Matthias Loeckx, Fernanda Maria Machado Rodrigues, Miek Hornikx, Heleen Demeyer, Chris Burtin, Wim Janssens, and Thierry Troosters. "Feasibility, acceptability and safety of downhill walking during pulmonary rehabilitation for patients with COPD: Results from a randomised controlled trial." In ERS International Congress 2016 abstracts. European Respiratory Society, 2016. http://dx.doi.org/10.1183/13993003.congress-2016.pa529.
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Heras Murcia, Daniel, Mahmoud Reda Taha, and John Stormont. "Innovative Sealant for Mitigating Methane Gas Emission in Abandoned Oil and Gas Wells." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211726-ms.
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Abstract The traditional solution for capping abandoned oil and gas wells is to fill portions of the open well with cement. However, cement is not ideal for plugging or capping because it often results in an ineffective seal. Cement proves ineffective due to shrinkage, inability to bond to steel casing, degradation over time, and a large carbon footprint in production. To be a solution for greenhouse gas (GHG) emissions from abandoned wellbores, plugging must be effective indefinitely. Moreover, the effectiveness must be documented over time. Thus, the conventional approach of plugging with cement and walking away offers no documented proof of GHG emission mitigation. In this work we suggest the use of a proprietary polymer-based sealant for plugging and abandonment. The sealant, referred to TSN-20, has superior flowability, excellent bond strength to steel and rock, is very ductile, and is thermally stable. TSN-20 sealant can penetrate, flow into and seal extremely thin microcracks (< 30 microns) where cement and most other sealants cannot flow. These small microcracks are problematic leakage pathways for methane and other GHGs. Further, unlike cement, TSN-20 bonds to steel and rock, is very ductile, thermally stable, and resist harsh downhole conditions, including acids and hydrocarbons. Tests showed TSN-20 can dramatically reduce the flow rate after one sealant injection. TSN-20 sealant can be used to mitigate methane gas emissions in abandoned oil and gas wells.