Matsuo Tomoaki, Ohkawara Kazunori, Seino Satoshi, Shimojo Nobutake, Yamada Shin, Ohshima Hiroshi, Tanaka Kiyoji, Mukai Chiaki
Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan.
Aviat Space Environ Med. 2012 Aug;83(8):783-9. doi: 10.3357/asem.3298.2012.
Astronauts experience weight loss during spaceflight. Future space missions require a more efficient exercise program not only to maintain work efficiency, but also to control increased energy expenditure (EE). When discussing issues concerning EE incurred through exercise, excess post-exercise energy expenditure (EPEE) must also be considered. The aim of this study was to compare the total EE, including EPEE, induced by two types of interval cycling protocols with the total EE of a traditional, continuous cycling protocol.
There were 10 healthy men, ages 20 to 31 yr, who completed 3 exercise sessions: sprint interval training (SIT) consisting of 7 sets of 30-s cycling at 120% VO2max with a 15-s rest between each bout; high-intensity interval aerobic training (HIAT) consisting of 3 sets of 3-min cycling at 80-90% VO2max with a 2-min active rest at 50% VO2max; and continuous aerobic training (CAT) consisting of 40 min of cycling at 60-65% VO2max. During each session, resting metabolic rate, exercise EE, and a 180-min post-exercise EE were measured.
The EPEEs during the SIT, HIAT, and CAT averaged 32 +/- 19, 21 +/- 16, and 13 +/- 13 kcal, and the total EE for an entire exercise/ rest session averaged 109 +/- 20, 182 +/- 17, and 363 +/- 45 kcal, respectively. While the EPEE after the CAT was significantly less than after the SIT, the total EE with the CAT was the greatest of the three.
The SIT and HIAT would be potential protocols to control energy expenditure for long space missions.
宇航员在太空飞行期间会出现体重减轻的情况。未来的太空任务需要更高效的锻炼计划，不仅要维持工作效率，还要控制增加的能量消耗（EE）。在讨论与运动引起的能量消耗相关的问题时，还必须考虑运动后过量能量消耗（EPEE）。本研究的目的是比较两种间歇循环方案所诱导的包括EPEE在内的总能量消耗与传统连续循环方案的总能量消耗。
有10名年龄在20至31岁之间的健康男性完成了3次锻炼：冲刺间歇训练（SIT），包括7组，每组30秒，以120%最大摄氧量（VO2max）骑行，每组之间休息15秒；高强度间歇有氧训练（HIAT），包括3组，每组3分钟，以80 - 90% VO2max骑行，在50% VO2max进行2分钟的主动休息；以及持续有氧训练（CAT），包括以60 - 65% VO2max骑行40分钟。在每次锻炼期间，测量静息代谢率、运动能量消耗以及运动后180分钟的能量消耗。
SIT、HIAT和CAT期间的EPEE平均分别为32±19、21±16和13±13千卡，整个运动/休息期间的总能量消耗平均分别为109±20、182±17和363±45千卡。虽然CAT后的EPEE显著低于SIT后的EPEE，但CAT的总能量消耗在三者中是最大的。
SIT和HIAT可能是控制长期太空任务能量消耗的方案。
