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- W2977889621 abstract "Abstract The purpose of this demonstration project was to assess the compliance of crew members to a portionof the exercise countermeasures planned for use during stays onboard the International Space Station(ISS) and to assess the outcomes of performing these countermeasures. Although these countermea-sures have been used separately in other projects and investigations, this was the first time they hadbeen used together for an extended period of time (60 days) in an investigation of this nature. Crewmembers exercised every day for six days, alternating every other day between aerobic and resistiveexercise, and rested on the seventh day. On the aerobic exercise days, subjects exercised on anelectronically braked cycle ergometer using a protocol which has been previously shown to maintainaerobic capacity in subjects exposed to a spaceflight analogue (6° head-down tilt bed rest). On theresistive exercise days, crew members performed five major multi-joint resistive exercises--benchpress, seated press, lat pull, squats, and heel raises--in a concentric mode, targeting those musclegroups and bones which are believed to be most severely affected by spaceflight. Subjects performedmaximal efforts with each repetition. Both exercise protocols were well tolerated by the subjects,demonstrated by a 98% compliance to aerobic exercise prescription and a 91% adherence to theresistive exercise protocol. Subjects also reported favorable comments. After 60 days, the crewmembers improved their peak aerobic capacity by an average of 7%. Strength gains during benchpress, shoulder press, lat pull, heel raise, and squat exercises were noted in all subjects. The results ofthis investigation suggest that these aerobic and resistive exercise protocols can be performed duringan ISS, lunar, or Mars mission. However, more frequent bouts of both resistive and aerobic exerciseare anticipated to be required to maintain crew health during long-duration spaceflight. Futureprojects should investigate the impact of increased exercise duration and frequency on thecompliance of subjects and the efficacy of such exercise prescriptions.vi" @default.
- W2977889621 created "2019-10-10" @default.
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- W2977889621 date "1998-01-01" @default.
- W2977889621 modified "2023-09-26" @default.
- W2977889621 title "Exercise Countermeasures Demonstration Project During the Lunar-Mars Life Support Test Project" @default.
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