Effects of 16-week high-intensity interval training using upper and lower body ergometers on aerobic fitness and morphological changes in healthy men: a preliminary study
Effects of 16-week high-intensity interval training using upper and lower body ergometers on aerobic fitness and morphological changes in healthy men: a preliminary study
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DOI：
10.2147/oajsm.s68932
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发表时间：
2014-01-01
影响因子：
2.4
通讯作者：
Matsumoto, Hideo
中科院分区：
文献类型：
--
作者：
Osawa, Yusuke;Azuma, Koichiro;Matsumoto, Hideo
目前尚不清楚腿和手臂相结合的高强度间歇训练（HIIT）是否能改善体能和形态特征，与基于腿的HIIT计划相同。本研究的目的是比较HIIT的影响，使用腿部循环（LC）和手臂曲柄（AC）测力计与HIIT计划，仅使用LC。分析了对有氧能力和骨骼肌的影响。将12名健康男性受试者分为两组。一组进行LC-HIIT（n= 7），另一组进行LC-和AC-HIIT（n= 5），每周两次，共16周。训练计划包括8至12组> 90%VO2（一分钟内可利用的摄氧量）峰值，持续60秒，并有60秒的主动休息期。在LC递增运动试验期间测量VO 2峰值、功率峰值和心率。采用磁共振成像和双能X线吸收法测量躯干和大腿肌肉的横截面积（CSA）以及去骨瘦体重。LC组（23%+/- 38%; P < 0.05）和LC-AC组（11%+/- 9%; P < 0.05）的功率峰值均较基线增加。LC组（11%+/- 4%; P < 0.05）和LC-AC组（5%+/- 5%; P < 0.05）的股四头肌CSA也较基线增加。相比之下，仅在LC-AC组中观察到腰大肌（9%+/- 11%）和腹前外侧肌（7%+/- 4%）的CSA增加。这些结果表明，LC和AC-HIIT相结合的程序，提高有氧能力和肌肉肥大的腿部和躯干肌肉。
It is unclear whether combined leg and arm high-intensity interval training (HIIT) improves fitness and morphological characteristics equal to those of leg-based HIIT programs. The aim of this study was to compare the effects of HIIT using leg-cycling (LC) and arm-cranking (AC) ergometers with an HIIT program using only LC. Effects on aerobic capacity and skeletal muscle were analyzed. Twelve healthy male subjects were assigned into two groups. One performed LC-HIIT (n= 7) and the other LC-and AC-HIIT (n= 5) twice weekly for 16 weeks. The training programs consisted of eight to 12 sets >90% VO2 (the oxygen uptake that can be utilized in one minute) peak for 60 seconds with a 60-second active rest period. VO2 peak, watt peak, and heart rate were measured during an LC incremental exercise test. The cross-sectional area (CSA) of trunk and thigh muscles as well as bone-free lean body mass were measured using magnetic resonance imaging and dual-energy X-ray absorptiometry. The watt peak increased from baseline in both the LC (23%+/- 38%; P < 0.05) and the LC-AC groups (11%+/- 9%; P < 0.05). The CSA of the quadriceps femoris muscles also increased from baseline in both the LC (11%+/- 4%; P < 0.05) and the LC-AC groups (5%+/- 5%; P < 0.05). In contrast, increases were observed in the CSA of musculus psoas major (9%+/- 11%) and musculus anterolateral abdominal (7%+/- 4%) only in the LC-AC group. These results suggest that a combined LC-and AC-HIIT program improves aerobic capacity and muscle hypertrophy in both leg and trunk muscles.