Houtman S, Thielen J J, Binkhorst R A, Hopman M T
Department of Physiology 237, University of Nijmegen, The Netherlands.
Eur J Appl Physiol Occup Physiol. 1999 Jan;79(2):202-4. doi: 10.1007/s004210050496.
The aim of this study was to examine effects of a pulsating pressure anti-gravity suit on the peak values of oxygen uptake (VO2) and power during maximal arm exercise in spinal-cord-injured (SCI) individuals. Five well-trained SCI men (with lesions at levels between T6 and L1) and seven well-trained able-bodied men (ABC) performed two incremental (10 W x min(-1)) arm-cranking tests. During one test the pressure in the anti-G suit pulsated between 4.7 kPa (35 mmHg) and 9.3 kPa (70 mmHg) every 2 s (PPG+), during the other test (PPG-) all the subjects wore the anti-G suit in a deflated state. Tests were performed in a counter-balanced order. Peak VO2 in SCI was 1 ml x kg(-1) x min(-1) lower during PPG+ compared to PPG- (P = 0.05). Peak power and peak heart rate were not significantly different during PPG+ compared to PPG-. These results would suggest that no increase in work capacity can be obtained with a pulsating pressure anti-gravity suit in either SCI or ABC.
本研究的目的是检验脉动压力抗重力服对脊髓损伤（SCI）个体在最大强度手臂运动期间的摄氧量（VO2）峰值和功率的影响。五名训练有素的SCI男性（损伤水平在T6至L1之间）和七名训练有素的健全男性（ABC）进行了两次递增（10 W x min(-1)）的手摇曲柄测试。在一次测试中，抗G服内的压力每2秒在4.7 kPa（35 mmHg）和9.3 kPa（70 mmHg）之间脉动（PPG+），在另一次测试（PPG-）中，所有受试者均穿着放气状态的抗G服。测试以平衡顺序进行。与PPG-相比，SCI个体在PPG+期间的VO2峰值低1 ml x kg(-1) x min(-1)（P = 0.05）。与PPG-相比，PPG+期间的峰值功率和峰值心率无显著差异。这些结果表明，无论是SCI个体还是ABC，脉动压力抗重力服都无法提高工作能力。
