University of Picardie, Jules Verne, Faculty of Sport Sciences, Research Laboratory, «Exercise Physiology and Rehabilitation», Amiens, France.
Int J Sports Med. 2013 Oct;34(10):924-30. doi: 10.1055/s-0033-1333719. Epub 2013 Jun 5.
The aim of the present study was to examine the respective importance of locomotor profile and muscle oxygen uptake (mV(˙)O₂) recovery on repeated-sprint ability (RSA) and overall repeated-sprint performance. 11 sprint- (STR) and 10 middle-distance-trained (MDTR) athletes (20.8±4.0 yr) performed an incremental test and a 40-to-50-m sprint to estimate their maximal aerobic (MAS) and sprinting (MSS) speeds. They also performed 6×30-m sprints, departing every 30 s, where mean (RS(mean)) sprint time was calculated. Muscle oxygenation (Near-infrared spectroscopy, NIRS, [Hb(diff)]) was measured for ~ 4 min post test. The mean response time of [Hb(diff)]-mV(˙)O₂ recovery (monoexponential curve fitting, MRT[Hb(diff)]-mV(˙)O₂) was calculated. Compared with MDTR, STR presented faster MSS (+11.4±6.7%, with 99% chances to observe a substantially greater value) and RS(mean) (-3.7±5.4%, 78%), but slower MAS (-15.8±8.0%, 100%) and MRT[Hb(diff)]-mV(˙)O₂ (+46.2±31.7%, 96%). RS(mean) was largely correlated with MSS [r=-0.83 (90%CL, -0.92;-0.67)], but neither with MAS [r=-0.12 (-0.47;0.25)] nor MRT[Hb(diff)]-mV(˙)O₂ [r=-0.27(-0.58;0.11)]. RS(mean) adjusted for MSS (which indirectly reflects RSA) was largely correlated with both MAS [r=0.51(0.18;0.74)] and MRT[Hb(diff)]-mV(˙)O₂ [r=0.53(0.20;0.75)]. While a fast mV(˙)O₂ recovery is associated with an improved RSA, MSS remains of primary importance for overall repeated-sprint performance (i.e., RS(mean)).
本研究旨在探讨运动表现特征和肌肉耗氧量（mV(˙)O₂）恢复对重复冲刺能力（RSA）和整体重复冲刺表现的相对重要性。11 名短跑运动员（STR）和 10 名中距离训练运动员（MDTR）（20.8±4.0 岁）进行了递增测试和 40-50 米冲刺，以估计他们的最大有氧速度（MAS）和冲刺速度（MSS）。他们还进行了 6 次 30 米冲刺，每次冲刺间隔 30 秒，计算平均冲刺时间（RS(mean)）。测试后约 4 分钟测量肌肉氧合（近红外光谱，NIRS，[Hb(diff)])。计算[Hb(diff)]-mV(˙)O₂恢复的平均响应时间（单指数曲线拟合，MRT[Hb(diff)]-mV(˙)O₂）。与 MDTR 相比，STR 的 MSS 更快（+11.4±6.7%，有 99%的机会观察到显著更大的值）和 RS(mean)（-3.7±5.4%，78%），但 MAS 较慢（-15.8±8.0%，100%）和 MRT[Hb(diff)]-mV(˙)O₂ 较慢（+46.2±31.7%，96%）。RS(mean)与 MSS 高度相关（r=-0.83（90%置信区间，-0.92；-0.67）），但与 MAS 无关（r=-0.12（-0.47；0.25）），也与 MRT[Hb(diff)]-mV(˙)O₂ 无关（r=-0.27（-0.58；0.11））。调整 MSS 的 RS(mean)（间接反映 RSA）与 MAS [r=0.51（0.18；0.74）]和 MRT[Hb(diff)]-mV(˙)O₂ [r=0.53（0.20；0.75）]均高度相关。虽然快速的 mV(˙)O₂恢复与改善的 RSA 相关，但 MSS 仍然是整体重复冲刺表现（即 RS(mean)）的主要重要性。
