School of Sport Science, Exercise and Health, The University of Western Australia, Australia.
J Sci Med Sport. 2012 Sep;15(5):451-6. doi: 10.1016/j.jsams.2012.02.003. Epub 2012 Apr 12.
To investigate the effect of various warm-up intensities based upon individual lactate thresholds on subsequent intermittent sprint performance, as well as to determine which temperature (muscle; T(mu), rectal; T(re) or body; T(b)) best correlated with performance (total work, work and power output of the first sprint, and % work decrement).
Nine male team-sport participants performed five 10-min warm-up protocols consisting of different exercise intensities on five separate occasions, separated by a week.
Each warm-up protocol was followed by a 6×4-s intermittent sprint test performed on a cycle ergometer with 21-s of recovery between sprints. T(mu), T(re) and T(b) were monitored throughout the test.
There were no differences between warm-up conditions for total work (J kg⁻¹; P=0.442), first sprint work (J kg⁻¹; P=0.769), power output of the first sprint (W kg⁻¹; P=0.189), or % work decrement (P=0.136), respectively. Moderate to large effect sizes (>0.5; Cohen's d) suggested a tendency for improvement in every performance variable assessed following a warm-up performed at an intensity midway between lactate inflection and lactate threshold. While T(mu), T(re), T(b), heart rate, ratings of perceived exertion and plasma lactate increased significantly during the exercise protocols (P<0.05), there were no significant correlations between T(mu), T(re), and T(b) assessed immediately after each warm-up condition and any performance variable assessed.
Warm-up performed at an intensity midway between lactate inflection and lactate threshold resulted in optimal intermittent sprint performance. Significant increases in T(mu), T(re) and T(b) during the sprint test did not affect exercise performance between warm-up conditions.
研究基于个体乳酸阈的不同热身强度对随后间歇冲刺表现的影响，并确定哪种温度（肌肉；T(mu)、直肠；T(re)或体核；T(b)）与表现（总功、第一冲刺的功和功率输出，以及功的递减百分比）相关性最好。
9 名男性团队运动参与者在 5 次不同的场合进行了 5 种 10 分钟的热身方案，每次间隔一周。
每种热身方案后，在功率自行车上进行 6×4-s 间歇冲刺测试，每次冲刺之间休息 21s。在整个测试过程中监测 T(mu)、T(re)和 T(b)。
在总功（J kg⁻¹；P=0.442）、第一冲刺功（J kg⁻¹；P=0.769）、第一冲刺功率输出（W kg⁻¹；P=0.189）或功的递减百分比（P=0.136）方面，不同热身条件之间没有差异。中等至较大的效应量（>0.5；Cohen's d）表明，在乳酸拐点和乳酸阈之间的强度进行热身后，每种评估的表现变量都有改善的趋势。虽然 T(mu)、T(re)、T(b)、心率、感知用力评分和血浆乳酸在运动方案期间显著增加（P<0.05），但在每个热身条件后立即评估的 T(mu)、T(re)和 T(b)与任何表现变量之间没有显著相关性。
在乳酸拐点和乳酸阈之间的强度进行热身可使间歇冲刺表现达到最佳。在冲刺测试期间 T(mu)、T(re)和 T(b)的显著增加并没有影响热身条件之间的运动表现。
