THE CORRELATION OF RUNNING ABILITY AND PHYSIOLOGICAL VARIABLES IN THOROUGHBRED RACEHORSES
THE CORRELATION OF RUNNING ABILITY AND PHYSIOLOGICAL VARIABLES IN THOROUGHBRED RACEHORSES
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DOI：
10.1111/j.2042-3306.1993.tb02902.x
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发表时间：
1993-01-01
影响因子：
2.2
通讯作者：
KAMERLING, SG
中科院分区：
文献类型：
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作者：
HARKINS, JD;BEADLE, RE;KAMERLING, SG
对25匹纯种赛马进行了1200m、1600m和20000 m跑能力的测试，并在跑步机上测定了各项生理指标，并与跑速度进行了相关分析。跑步速度与血乳酸达到稳态浓度时的速度(V(La4))和工作速率(W(La4))呈负相关，与峰值血乳酸呈正相关，提示速度快的马血浆乳酸浓度上升更快，且上升到更高的水平。跑步速度和心率(HR)之间的相关性不适合的马比适合的马更强，这表明训练的心血管效应对速度较慢的马更有利。跑步速度和V200之间的显著相关性表明，进行类似运动的速度较快的马的HR增长速度比速度较慢的马更快。跑步速度和最大摄氧量的相关性表明，速度较快的马的心率比进行类似运动的速度较慢的马增加得更快。跑步速度和最大摄氧量的相关性表明，在最大强度的运动中，跑得更快的马会利用更多的氧气。跑步速度与最低pH值和最低HCO3-的相关性表明，速度较快的马在氢离子(H+)浓度较高的情况下保持速度。在长距离跑步中，跑步速度和测量变量之间的相关性一直更强。因为V(LA4)和W(LA4)是在次极量运动中获得的，所以这些变量被确定为与跑步成绩最相关的变量。
The running abilities of 25 Thoroughbred racehorses were measured at distances of 1200, 1600 and 20000 m. Various physiological variables were measured subsequently on the treadmill and correlated with running speed. There was a negative correlation for running speed with the velocity (V(La4)) and work rate (W(La4)) at which blood lactate reaches a steady-state concentration of 4 mmol/litre and a positive correlation with peak plasma lactate, suggesting that plasma lactate concentrations of faster horses rise more rapidly and to higher levels than do those of slower horses. The correlation between running speeds and heart rates (HR) was stronger for unfit than fit horses, suggesting that cardiovascular effects of training are more beneficial to slower horses. The significant correlation between running speeds and V200 suggests that the HR of faster horses increases more rapidly than in slower horses performing similar exercise. The correlation of running speeds and VO2max suggests that the HR of faster horses increases more rapidly than in slower horses performing similar exercise. The correlation or running speeds and VO2max Suggests that faster horses utilise more oxygen during maximal intensity exercise. The correlation of running speeds with minimum pH and minimum HCO3- suggests that faster horses maintain speed at higher hydrogen ion (H+) concentrations. Correlations between running speeds and the measured variables were consistently stronger for the longer distance runs. Because V(La4) and W(La4) were obtained during sub-maximal exercise, these variables were determined to be the best correlates of running performance.