Prolonged electrical muscle stimulation exercise improves strength and aerobic capacity in healthy sedentary adults
Prolonged electrical muscle stimulation exercise improves strength and aerobic capacity in healthy sedentary adults
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DOI：
10.1152/japplphysiol.00891.2004
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发表时间：
2005-12-01
影响因子：
3.3
通讯作者：
Clark, A
中科院分区：
文献类型：
--
作者：
Banerjee, P;Caulfield, B;Clark, A
本研究评估了久坐成年人对长时间肌肉电刺激（EMS）的训练反应。15名健康受试者（10名男性，5名女性）久坐不动的生活方式完成了为期6周的训练计划，在此期间，他们完成了平均29个1小时的EMS会议。受试者使用的EMS形式能够引起心血管运动反应，而不会对四肢或关节造成负荷。它通过诱导大腿肌肉快速、有节奏的收缩来实现这一点。采用交叉研究设计，受试者在研究的非训练阶段接受其习惯性活动水平。通过平板试验确定峰值有氧能力[峰值耗氧量（V-O2）]、6分钟步行距离试验、测量体重指数（BMI）和股四头肌肌力来评估训练效果。基线时，峰值V-O2、6分钟步行距离、四头肌力量和BMI的平均值分别为2.46 +/- 0.57 l/ min、493.3 +/- 36.8 m、360.8 +/- 108.7 N和26.9 +/- 3.4 kg/m2。训练后，除BMI外，受试者在所有变量上都有统计学显著改善。V-O2峰值平均增加0.24 +/- 0.16 l/ min步行距离增加36.6 ± 19.7 m（P < 0.05）（P < 0.005），股四头肌力量增加87.5 +/- 55.9 N我们没有观察到由于训练对BMI的显著影响（P > 0.05）。这些结果表明，EMS可以用于久坐的成年人，以改善身体健康。它可能为这一人群提供了一种可行的替代传统锻炼形式的选择。
This investigation evaluated training responses to prolonged electrical muscle stimulation ( EMS) in sedentary adults. Fifteen healthy subjects ( 10 men, 5 women) with a sedentary lifestyle completed a 6- wk training program during which they completed an average of 29 1- h EMS sessions. The form of EMS used by the subjects was capable of eliciting a cardiovascular exercise response without loading the limbs or joints. It achieved this by means of inducing rapid, rhythmical contractions in the large leg muscles. A crossover study design was employed with subjects undergoing their habitual activity levels during the nontraining phase of the study. The training effect was evaluated by means of a treadmill test to determine peak aerobic capacity [ peak oxygen consumption ( V-O2)], a 6- min walking distance test, and measurement of body mass index ( BMI) and quadriceps muscle strength. At baseline, the mean values for peak V-O2, 6- min walking distance, quadriceps strength, and BMI were 2.46 +/- 0.57 l/ min, 493.3 +/- 36.8 m, 360.8 +/- 108.7 N, and 26.9 +/- 3.4 kg/m(2), respectively. After training, subjects demonstrated statistically significant improvements in all variables except BMI. Peak V-O2 increased by an average of 0.24 +/- 0.16 l/ min ( P < 0.05), walking distance increased by 36.6 +/- 19.7 m ( P < 0.005), and quadriceps strength increased by 87.5 +/- 55.9 N ( P < 0.005); we did not observe a significant effect due to training on BMI ( P > 0.05). These results suggest that EMS can be used in sedentary adults to improve physical fitness. It may provide a viable alternative to more conventional forms of exercise in this population.