Effect of Constraint Loading on the Lower Limb Muscle Forces in Weightless Treadmill Exercise.

ABSTRACT: Long exposure to the microgravity will lead to muscle atrophy and bone loss. Treadmill exercise could mitigate the musculoskeletal decline. But muscle atrophy remains inevitable. The constraint loading applied on astronauts could affect the muscle force and its atrophy severity. However, the quantitative correlation between constraint loading mode and muscle forces remains unclear. This study aimed to characterize the influence of constraint loading mode on the lower limb muscle forces in weightless treadmill exercise. The muscle forces in the full gait cycle were calculated with the inverse dynamic model of human musculoskeletal system. The calculated muscle forces at gravity were validated with the EMG data. Muscle forces increased at weightlessness compared with those at the earth's gra

SUBMITTER: Guo N 

PROVIDER: S-EPMC5903329 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature