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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

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

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RITZMANN, Ramona, Kathrin FREYLER, Jakob KÜMMEL, Markus GRUBER, Daniel L. BELAVY, Dieter FELSENBERG, Albert GOLLHOFER, Andreas KRAMER, Gabriele AMBRECHT, 2018. 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. In: Frontiers in Physiology. 9, 1713. eISSN 1664-042X. Available under: doi: 10.3389/fphys.2018.01713

@article{Ritzmann2018-12-03Inten-44129, title={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}, year={2018}, doi={10.3389/fphys.2018.01713}, volume={9}, journal={Frontiers in Physiology}, author={Ritzmann, Ramona and Freyler, Kathrin and Kümmel, Jakob and Gruber, Markus and Belavy, Daniel L. and Felsenberg, Dieter and Gollhofer, Albert and Kramer, Andreas and Ambrecht, Gabriele}, note={Article Number: 1713} }

Ambrecht, Gabriele Ritzmann, Ramona eng Ritzmann, Ramona Kramer, Andreas Belavy, Daniel L. Gollhofer, Albert Gruber, Markus Felsenberg, Dieter 2018-12-04T13:47:40Z terms-of-use Freyler, Kathrin 2018-12-04T13:47:40Z Kramer, Andreas Gruber, Markus 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 Freyler, Kathrin Kümmel, Jakob Belavy, Daniel L. Gollhofer, Albert Kümmel, Jakob Ambrecht, Gabriele Felsenberg, Dieter 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 < 0.05) was accompanied by increased co-contractions of antagonistic muscles encompassing the ankle (+32%, p < 0.05) and knee joint (45%, p < 0.05). A reduced locomotor speed (−22%, p < 0.05) was found concomitant with pathological gait rhythmicity (p < 0.05), reduced joint excursions (ankle −8%, knee −29%, p < 0.05) and an increased gait variability (p < 0.05). Chair-rising was slowed (+28%, p < 0.05) with reduced peak power (+18%, p < 0.05), and more time was needed to accomplish TUG (+39%, p < 0.05). The effects persisted for a period of 1 month after bed-rest. Increases in sway path were correlated to decreases in gait speed. The JUMP effectively preserved the neuromuscular system's ability to safely control postural equilibrium and perform complex locomotor movements, including fast bipedal gait with turns and rises. We therefore recommend JUMP as an appropriate strategy combatting functional deconditioning. 2018-12-03

Dateiabrufe seit 04.12.2018 (Informationen über die Zugriffsstatistik)

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