DAS Arnab, Mandal Malay, Syamal Alak K, Majumdar Pralay
Department of Exercise Physiology, Sports Science, Sports Authority of India, NSSC, Bangalore, INDIA.
Post Graduate Department of Physiology, Hooghly Mohsin College, The University of Burdwan, West Bengal, INDIA.
Int J Exerc Sci. 2019 Mar 1;12(2):483-490. doi: 10.70252/YJSX4918. eCollection 2019.
The purpose of this study was to characterize the kinetics of cardio-respiratory parameters of elite male rowers during 2000m rowing time trial. 16 lightweight category (LWC) and 11 open category (OC) elite male rowers attending National camp were included in the study. Pulmonary gas exchange and heart rate (HR) during 2000m rowing ergometer test was determined through breath-by-breath analysis, with a portable metabolic gas analyzer and HR monitor. Time to completion, HR, oxygen uptake (V̇O2), minute ventilation (V̇E) and respiratory exchange ratio (RER) were recorded at 500m, 1000m, 1500m and 2000m intervals. No significant (p>0.05) difference was observed in the HR kinetics during 2000m rowing between the groups. However, split HR during the entire course was on the higher side in OC than LWC. Relative V̇O2 at 1000m (p<0.01), 1500m (p<0.05) and 2000m (p<0.01) was significantly less in OC rowers compared to LWC. However, V̇E was significantly higher for the OC group at 1500m (p<0.05) and 2000m (p<0.01) whereas RER was only significantly higher at 2000m (p<0.05). %change in absolute and relative V̇O2, V̇E and RER at each 500m interval showed no significant difference among the groups. OC rowers had taken significantly less time (p<0.05) to complete first 500m, 500m to 1000m and last 500m distance than LWC rowers. This detailed insight of rower's physiological responses can help coaches and support staff to determine the physiological working capacity of rowers at different levels, predicting performance and provided normative ranges for developing a representative physiological profile of elite Indian rowers.
本研究的目的是描述精英男性赛艇运动员在2000米赛艇计时赛期间心肺参数的动力学特征。16名参加国家训练营的轻量级组（LWC）和11名公开级组（OC）精英男性赛艇运动员被纳入该研究。通过逐次呼吸分析，使用便携式代谢气体分析仪和心率监测器，测定2000米赛艇测力计测试期间的肺气体交换和心率（HR）。在500米、1000米、1500米和2000米间隔处记录完成时间、心率、摄氧量（V̇O2）、分钟通气量（V̇E）和呼吸交换率（RER）。两组之间在2000米赛艇过程中的心率动力学未观察到显著差异（p>0.05）。然而，公开级组在整个赛程中的分段心率高于轻量级组。与轻量级组相比，公开级组赛艇运动员在1000米（p<0.01）、1500米（p<0.05）和2000米（p<0.01）处的相对V̇O2显著更低。然而，公开级组在1500米（p<0.05）和2000米（p<0.01）处的V̇E显著更高，而呼吸交换率仅在2000米处显著更高（p<0.05）。每组在每500米间隔处的绝对和相对V̇O2、V̇E和呼吸交换率的变化百分比无显著差异。公开级组赛艇运动员完成前500米、500米至1000米和最后500米距离的时间显著少于轻量级组赛艇运动员（p<0.05）。对赛艇运动员生理反应的这种详细洞察有助于教练和辅助人员确定不同水平赛艇运动员的生理工作能力、预测成绩，并为建立印度精英赛艇运动员具有代表性的生理特征提供标准范围。
