Utter Alan C, Kang Jie, Nieman David C, Dumke Charles L, McAnulty Steven R
Department of Health, Leisure, and Exercise Science, Appalachian State University, Boone, NC 28608, USA.
Med Sci Sports Exerc. 2006 Apr;38(4):780-6. doi: 10.1249/01.mss.0000210201.25447.3b.
The present investigation was conducted to validate the OMNI ratings of perceived exertion (RPE) scale during prolonged cycle exercise when subjects were supplemented with either carbohydrate or placebo.
Fifteen trained cyclists cycled for 2.5 h at approximately 60% maximal watts on two occasions while receiving 4 mL x kg(-1) x 15 min(-1) carbohydrate (6%) (C) or placebo (P) beverages in a randomized, counterbalanced design. Concurrent and construct validity was established by evaluating perceptual responses with both the OMNI and Borg RPE scales every 20 min throughout the trials.
The pattern of change in RPE over time was significantly different between C and P ingestion (P < 0.05), with an attenuated RPE response in C found at the hundredth minute for both the OMNI and Borg scales. The pattern of change in the respiratory exchange ratio and carbohydrate oxidation rates were significantly greater (P < 0.001) in the C than P condition. RPE-OMNI was positively and linearly related to the RPE-BORG; r = 0.60-0.98 (P < 0.01) throughout exercise for both the C and P conditions.
Concurrent and construct evidence supports the use of the OMNI-cycle scale by adult men to estimate RPE during prolonged cycle exercise under differing conditions of carbohydrate supplementation.
本研究旨在验证在长时间骑行运动中，当受试者补充碳水化合物或安慰剂时，主观用力感觉（RPE）的OMNI量表。
15名训练有素的自行车运动员在两种情况下，以约60%最大功率骑行2.5小时，采用随机、交叉平衡设计，分别饮用4 mL·kg⁻¹·15 min⁻¹的碳水化合物（6%）（C）饮料或安慰剂（P）饮料。在整个试验过程中，每隔20分钟用OMNI和Borg RPE量表评估感知反应，以建立同时效度和结构效度。
C组和P组摄入后RPE随时间的变化模式有显著差异（P<0.05），在第100分钟时，C组的OMNI量表和Borg量表的RPE反应均减弱。呼吸交换率和碳水化合物氧化率的变化模式在C组比P组显著更大（P<0.001）。在整个运动过程中，C组和P组的RPE-OMNI与RPE-BORG呈正线性相关；r = 0.60 - 0.98（P<0.01）。
同时效度和结构效度的证据支持成年男性在不同碳水化合物补充条件下的长时间骑行运动中使用OMNI自行车量表来估计RPE。
