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High Intensity Jump Exercise Preserves Posture Control, Gait and Functional Mobility During 60 Days of Bed-rest: an RCT Including 90 Days of Follow-up

Ramona RitzmannKathrin FreylerJakob KümmelMarkus GruberDaniel L. BelavyDieter FelsenbergAlbert GollhoferAndreas KramerGabriele Ambrecht

出版	Universität, 2018
URL	http://books.google.com.hk/books?id=yMn8wQEACAAJ&hl=&source=gbs_api

註釋Abstract: Physical inactivity causes a deconditioning of the human body. Concerns due to chronic bed-rest include deficits in posture and gait control, predisposing individuals to an increased fall and injury risk. This study assessed the efficiency of a high-load jump exercise (JUMP) as a countermeasure to prevent detrimental effects on gait, posture control and functional mobility. In an RCT (23 males), the effect of 60 days bed-rest without training was compared to JUMP. JUMP is characterized by plyometric executed as a high intensity interval training. Typical trainings session consisted of 4 × 10 countermovement jumps and 2 × 10 hops in a sledge jump system. We assessed sway path and muscle activity in monopedal stance, spatiotemporal, kinematic, and variability characteristics in gait, functional mobility with repeated chair-rises and Timed Up and Go (TUG). Results revealed: The JUMP group showed no significant changes after bed-rest, whereas the control group exhibited substantial deteriorations: an increased sway path (+104%, p