特定生理变量对短距离铁人三项运动成绩的影响。

Contribution of select physiological variables to sprint triathlon performance.

作者信息

Papavassiliou Thomas, Zacharogiannis Elias, Soultanakis Helen, Paradisis George, Dagli Pagotto Fotini

机构信息

School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece -

School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece.

出版信息

J Sports Med Phys Fitness. 2019 Aug;59(8):1311-1318. doi: 10.23736/S0022-4707.19.09190-4.

DOI:10.23736/S0022-4707.19.09190-4

PMID:31373189

Abstract

BACKGROUND

The purpose of this study was to examine the relationship between select physiological variables and sprint triathlon performance.

METHODS

Moderately trained male triathletes (N.=15) performed two graded maximal exercise tests, on a cycle ergometer and a treadmill. Anaerobic capacity was evaluated, on a cycle ergometer and a treadmill. Within two weeks before or after the testing, all triathletes participated in a sprint triathlon race (750 m sea swim, 20 km cycle, 5 km run).

RESULTS

The results showed that significant correlations exist between VO2max during cycling (r=-0.811, P<0.05) or running (r=-0.757, P<0.05) and overall triathlon performance. Stepwise multiple linear regression analysis, with triathlon performance as the dependent variable and the physiological measures during running as the independent variables, showed that VO2max (mL.min-1.kg-1), Time_CF, CHO_rate @ VT and % body fat yielded the best prediction of performance (R2=0,912). When only the physiological variables from cycling were included into the model, the results showed that VO2max (mL.min-1), VO2max (mL.min-1.kg-1) and PFmax (rpm) explained 88% of the variation in sprint triathlon performance.

CONCLUSIONS

Our data indicate that overall race time for moderately trained triathletes, competing over the sprint distance can be accurately predicted from maximal laboratory tests.

摘要

背景

本研究旨在探讨特定生理变量与短距离铁人三项赛成绩之间的关系。

方法

15名中等训练水平的男性铁人三项运动员在自行车测力计和跑步机上进行了两次递增式最大运动测试。在自行车测力计和跑步机上评估无氧能力。在测试前或测试后的两周内，所有铁人三项运动员都参加了一场短距离铁人三项赛（750米海泳、20公里自行车骑行、5公里跑步）。

结果

结果表明，骑行时的最大摄氧量（r=-0.811，P<0.05）或跑步时的最大摄氧量（r=-0.757，P<0.05）与铁人三项赛总成绩之间存在显著相关性。以铁人三项赛成绩为因变量、跑步时的生理指标为自变量进行逐步多元线性回归分析，结果显示最大摄氧量（毫升·分钟⁻¹·千克⁻¹）、Time_CF、通气阈值时的碳水化合物氧化率和体脂百分比对成绩的预测效果最佳（R²=0.912）。当仅将骑行时的生理变量纳入模型时，结果表明最大摄氧量（毫升·分钟⁻¹）、最大摄氧量（毫升·分钟⁻¹·千克⁻¹）和最大功率（转每分钟）解释了短距离铁人三项赛成绩变化的88%。