PDF(Pubmed)
Abstract：
This study aimed to evaluate the difference in heart rate and core temperature during aerobic exercise between two forms of dehydration: exercise-induced (EI) and fluid restricted (FR). Twenty-two subjects (N = 22; 83.35 ± 13.92 kg) completed the current study, performing a familiarization session, a pre-experimental exercise session, and two exercise testing sessions. The EI exercise trial (81.52 ± 13.72 kg) was conducted after performing exercise in a hot environment to lose three to four percent of body weight and partial rehydration. The FR exercise trial (81.53 ± 14.14 kg) was completed after 12 hours of fluid restriction. During both exercise sessions, subjects pedaled against a set resistance of 130 watts for 30 minutes. The main effect of hydration on Tc was significant, F(1, 18) = 4.474, p = .049, η p 2 = .199 (Figure 2) with core temperature being greater during the FR trial compared to the EI trial (FR = 37.58 ± .06°C vs. EI = 37.31 ± .11°C). No significant interaction was found between hydration and time for HR, F(2, 42) = 0.120, p = .887, η p 2 = .006. The main effect of time on HR was significant, F(2, 42) = 119.664, p < .001, η p 2 = .851. Fluid restriction was associated with an increase in core temperature. An increased core temperature may negatively influence performance, and care should be taken to ensure proper hydration.
摘要：
这项研究旨在评估有氧运动期间心率和核心温度在两种形式的脱水之间的差异：运动诱发（EI）和液体限制（FR）。22名受试者（N=22;83.35±13.92kg）完成了当前研究，进行熟悉会议，实验前的练习，和两次运动测试。EI运动试验（81.52±13.72kg）是在炎热的环境中进行运动以减轻3％至4％的体重和部分补液后进行的。在限制液体12小时后完成FR运动试验(81.53±14.14kg)。在两次锻炼期间，受试者在130瓦的设定阻力下踩踏30分钟。水化对Tc的主要影响是显著的,F（1，18）=4.474，p=.049，ηp2=.199（图2），与EI试验相比，FR试验期间的核心温度更高（FR=37.58±.06°Cvs.EI=37.31±.11°C)。对于HR，在水合作用和时间之间没有发现显著的相互作用，F(2，42)=0.120，p=.887，ηp2=.006。时间对HR的主要影响是显著的，F(2，42)=119.664，p<.001，ηp2=.851。流体限制与核心温度升高有关。升高的核心温度可能会对性能产生负面影响，并应注意确保适当的水合作用。
