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Talin Louder, Dennis Dolny and Eadric Bressel

Context: The aquatic environment provides a low-impact alternative to land-based exercise and rehabilitation in older adults. Objective: Evaluate the biomechanics of older adults and young adults performing jumping movements on land and in water. Design and Setting: Cross-sectional, mixed-factorial experiment; adjustable-depth pool at sports medicine research facility. Participants: Fifty-six young adults (age = 22.0 [3.9] y) and 12 healthy older adults (age = 57.3 [4.4] y). Interventions: Each participant performed 6 maximal effort countermovement jumps: 3 jumps were performed on land, and 3 other jumps were performed with participants immersed in chest-deep water. Main Outcome Measures: Using data from the amortization and propulsive phases of jumping, the authors computed the following kinetic and kinematic measures: peak and mean mechanical power, peak force, amortization time and rate, unweighting and propulsive times, and lower-extremity segment kinematics. Results: Mechanical power outputs were greater in younger adults (peak: 7322 [4035] W) versus older adults (peak: 5661.65 [2639.86] W) and for jumps performed in water (peak: 9387 [3981] W) versus on land (peak: 4545.84 [1356.53] W). Peak dorsiflexion velocities were greater for jumps performed in water (66 [34] deg/s) versus on land (4 [7] deg/s). The amortization rate was 26% greater in water versus on land. The amortization time was 20% longer in older adults versus young adults. Conclusions: Countermovement jumps performed in water are mechanically specific from those performed on land. Older adults jumped with longer unweighting times and increased mechanical power in water. These results suggest that aquatic-based exercise and rehabilitation programs that feature jumping movements may benefit older adults.

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Juliana Hotta Ansai, Larissa Pires de Andrade, Paulo Giusti Rossi, Theresa Helissa Nakagawa, Francisco Assis Carvalho Vale and José Rubens Rebelatto

This study compared performances of timed up and go test subtasks between 40 older people with preserved cognition, 40 with mild cognitive impairment, and 38 with mild Alzheimer’s disease. The assessment consisted of anamneses and timed up and go test subtasks (sit-to-stand, walking forward, turn, walking back, and turn-to-sit). Data were captured by Qualisys Track Manager software and processed by Visual3D software. The MATLAB program was applied to detect and analyze timed up and go test subtasks. All subtasks differentiated people with Alzheimer’s disease and preserved cognition, except the sit-to-stand subtask, which did not distinguish any group. The walking forward subtask differed older people with preserved cognition from mild cognitive impairment, specifically on minimum peak of knee, average value of knee, and hip (pitch axis) during stance phase. The walking back, turn, and turn-to-sit subtasks distinguished subjects with Alzheimer’s disease from mild cognitive impairment. The separated analysis of transition and walking subtasks is important in identifying mobility patterns among cognitive profiles.

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Afshin Moghadasi, Gholamali Ghasemi, Ebrahim Sadeghi-Demneh and Masoud Etemadifar

has shown that suspension training improves functional mobility, strength, and balance in the elderly people, 14 and it reduces pain intensity and increases trunk muscles strength in patients with lower back pain. 15 The effectiveness of TRX training has not yet been studied on pwMS. Therefore, the

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Mary Hellen Morcelli, Dain Patrick LaRoche, Luciano Fernandes Crozara, Nise Ribeiro Marques, Camilla Zamfolini Hallal, Mauro Gonçalves and Marcelo Tavella Navega

more proximal muscles working at the trunk and hip and functional mobility of older adults deserves further investigation. 15 Rate of torque development is another muscle performance measure that quantifies the rapid application of strength and is related to speed of movement. Similar to strength, rate

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Carly C. Sacco, Erin M. Gaffney and Jesse C. Dean

Kinesthesia, the sense of body movement, is widely acknowledged to play an important role in functional mobility. Both proprioceptive receptors (eg, muscle spindles) and cutaneous receptors (eg, Ruffini corpuscles) can provide sensory feedback related to body segment position or velocity, thus

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Nathan F. Johnson, Chloe Hutchinson, Kaitlyn Hargett, Kyle Kosik and Phillip Gribble

factors such as strength, coordination, and balance also contribute to safe functional mobility. These variables were not collected, but each decline with age. Future studies need to consider multiple factors when evaluating the unique contribution of flexibility on functional performance. Finally, a lack

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Yaser Alikhajeh, Elyas Barabadi and Gholam Rasul Mohammad Rahimi

, functionality, mobility and endurance in the treatment of chronic low back pain: a randomized controlled study . J Back Musculoskelet Rehabil . 2017 ; 30 ( 5 ): 1087 – 1093 . doi: 10.3233/BMR-169705 28968232 32. Nelson NL . Kinesio taping for chronic low back pain: a systematic review . J Bodyw Mov Ther

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Constantine P. Nicolozakes, Daniel K. Schneider, Benjamin D. Roewer, James R. Borchers and Timothy E. Hewett

, defensive lineman, linebacker, defensive back, and kicker. Each subject answered questions about injury history and underwent tests to measure body composition, functional mobility, and stability. Table 1 Anthropometric Measurements, Previous Injury History, and Football Positions of Subjects Overall (n

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Kayla E. Boehm, Blaine C. Long, Mitchell T. Millar and Kevin C. Miller

.3233/BMR-170835 10.3233/BMR-170835 28946540 21. Köroğlu F , Çolak TK , Polat MG . The effect of Kinesio ® taping on pain, functionality, mobility and endurance in the treatment of chronic low back pain: A randomized controlled study . J Back Musculoskelet Rehabil . 2017 ; 30 : 1087 – 1093 . doi

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Yi-Ju Tsai, Chieh-Chie Chia, Pei-Yun Lee, Li-Chuan Lin and Yi-Liang Kuo

endurance, fall index and functional mobility skills in patients with patello femoral pain syndrome . J Back Musculoskelet Rehabil . 2017 ; 30 ( 1 ): 163 – 170 . doi:10.3233/BMR-160729 10.3233/BMR-160729 35. Leporace G , Praxedes J , Pereira GR , et al . Influence of a preventive training