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Jaclyn Megan Sions, Elisa Sarah Arch and John Robert Horne

In the United States, the 1-year mortality rate following a major lower-limb amputation may be as high as 48%, whereas the 3-year mortality rate may be as high as 71%. 1 It is well established that adults with lower-limb amputations have reduced physical activity. 2 , 3 Physical inactivity and

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Guilherme S. Nunes, Débora Faria Wolf, Daniel Augusto dos Santos, Marcos de Noronha and Fábio Viadanna Serrão

lower-limb kinematics, and hip and knee kinetics during single-leg squats and jumps in females with PFP. A subgroup of asymptomatic individuals was also included as a control situation to investigate whether the mobilization technique could influence the kinematics and kinetics of people without PFP

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Guillermo Mendez-Rebolledo, Rodrigo Ramirez-Campillo, Eduardo Guzman-Muñoz, Valeska Gatica-Rojas, Alexis Dabanch-Santis and Francisco Diaz-Valenzuela

Vertical jumping is a motor ability commonly used in daily activities (eg, obtaining objects out of reach, avoiding obstacles). In sports, such as track and field, gymnastics, volleyball, basketball, and soccer, vertical jumping is also an excellent marker of lower limb muscle power. 1 – 3 Aside

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Victor Silveira Coswig, Bianca Miarka, Daniel Alvarez Pires, Levy Mendes da Silva, Charles Bartel and Fabrício Boscolo Del Vecchio

carry out a high-intensity attack with a sequence of striking techniques (punches and/or elbows) toward the opponent  lower limb sequences Any attempt to carry out a high-intensity attack with a sequence of striking techniques (kicks and/or knees) at the opponent  ground and pound Any attempt to carry

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Kevin Deschamps, Giovanni Matricali, Maarten Eerdekens, Sander Wuite, Alberto Leardini and Filip Staes

In foot mechanics, bone structure and joint kinematics have long been considered risk factors for foot and lower-limb running injuries, 1 , 2 but the role of foot kinetics has been largely overlooked. The foot mechanics result from a complex interaction between its many bony segments and joints

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Damien Moore, Adam I. Semciw, Jodie McClelland, Henry Wajswelner and Tania Pizzari

-strengthening programs for people with lower-limb osteoarthritis. 23 – 25 The lack of research evaluating GMin function in exercise is likely due to the technical difficulty of accessing this muscle with intramuscular electromyography (EMG). 26 Some rehabilitation exercises for the GMin segments have been recently

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Max R. Paquette and Daniel A. Melcher

male runners. We expected increases in selected injury-related lower limb biomechanical variables following the long run. The secondary purpose of this study was to assess the relationship between weekly running volume and the change in the selected injury-related variables before and after the long

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María Hernández, Fabrício Zambom-Ferraresi, Pilar Cebollero, Javier Hueto, José Antonio Cascante and María M. Antón

 al., 2011 ). However, it is not entirely clear whether muscle strength and muscle power are involved in the physical activity levels of older men with COPD. The peripheral muscle dysfunction of the lower limbs observed in older men with COPD is characterized by a reduction in the maximum muscle strength and

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Stephanie Di Lemme, Jon Sanderson, Richard G. Celebrini and Geoffrey C. Dover

lower limb circumference (Table  3 ). All pain and function measures improved throughout the rehabilitation. 18 , 19 Lower leg and thigh circumference remained relatively constant from weeks 1 through 5 and slightly increased during week 5, suggesting no atrophy of the knee flexors, extensors, and

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Pei-Chun Kao and Daniel P. Ferris

During passive lower limb movement, active use of the upper limbs increases unintentional lower limb muscle activation. We hypothesized that faster movement frequencies would amplify lower limb muscle activation during upper limb exertion but would not affect lower limb muscle activation when the upper limbs were relaxed. We studied 10 healthy participants exercising on a recumbent stepping machine that mechanically coupled the four limbs via handles and pedals. Participants exercised at four frequencies (30, 60, 90, 120 steps/min) under four conditions of active and passive movement. Self-driven lower limb motion resulted in greater muscle activation compared to externally driven lower limb motion. Muscle activation amplitude increased with frequency for all conditions except for externally driven stepping. These results indicate that fast upper limb movement facilitates neuromuscular recruitment of lower limb muscles during stepping tasks. If a similar effect occurs in neurologically impaired individuals during active stepping, self-assisted exercise might enhance neuromuscular recruitment during rehabilitation.