文摘
Daily loads were quantified in subjects who were then randomly assigned to control or exercise groups. Eleven subjects (5 exercise, 6 control) completed the protocol of 84-days head-down bedrest. In 2 hip regions, bone loss was significant in controls but not in exercising subjects. The exercise group retained a larger percentage ofquadriceps and gastrocnemius muscle volumes and VO2max than controls. 1x day locomotor exercise attenuates changes but does not maintain musculoskeletal or cardiovascular health during bedrest.