Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile.
Eur J Sport Sci. 2023 May;23(5):736-745. doi: 10.1080/17461391.2022.2054364. Epub 2022 Mar 27.
This study aimed to compare the maximal mechanical variables derived from the load-velocity (L-V) relationship and 2000-meter rowing ergometer performance between rowers of different age categories, and to identify the L-V relationship variables more closely related to 2000-meter rowing ergometer performance. Nineteen competitive rowers (15 males and four females) aged between 15 and 25 years were evaluated during the national 2000-meter rowing ergometer competition organised by the Chilean Rowing Federation. Thereafter, the L-V relationship variables (load-axis intercept [], velocity-axis intercept [], and area under the L-V relationship line []) were determined on separate occasions during the squat jump and prone bench pull exercises. Rowers were classified according to their chronological age for comparative purposes (under 16 years [U16] over 16 years [O16]). and were always higher for O16 than for U16 ( ≤ 0.046; ES range = 0.99-1.79), while was generally comparable for both age categories ( ≥ 0.038; ES range = 0.07-1.03). Furthermore, the O16 revealed a greater performance (i.e. shorter total time) during the 2000-meter rowing ergometer competition ( = 0.011; ES = -1.31). In general, significant correlations were obtained between rowing performance and the L-V relationship variables obtained during the squat jump ( or range = -0.294 to -0.922) and prone bench pull ( or range = -0.322 to -0.928). These results support the L-V relationship as a sensitive procedure to evaluate the maximal mechanical capacities of lower- and upper-body muscles in competitive rowers.The load-velocity relationship variables are sensitive enough to differentiate between rowers of different age categories (U16 O16).The load-velocity variables are significantly associated with 2000-meter rowing ergometer performance (total time).This novel testing methodology can provide practitioners and coaches with a simpler and more precise alternative to comprehensively assess a rower's maximal neuromuscular profiles.
本研究旨在比较不同年龄组赛艇运动员在负荷-速度（L-V）关系和 2000 米测功仪性能方面的最大机械变量，并确定与 2000 米测功仪性能更密切相关的 L-V 关系变量。在智利赛艇联合会组织的全国 2000 米测功仪比赛中，评估了 19 名年龄在 15 至 25 岁之间的竞技赛艇运动员。此后，在深蹲跳和俯姿卧拉运动中分别确定 L-V 关系变量（负荷轴截距 []、速度轴截距 [] 和 L-V 关系线下面积 [])。为了进行比较，根据运动员的年龄将其分类（16 岁以下[U16] 16 岁以上[O16]）。对于 O16，[ 和 总是高于 U16（≤0.046；ES 范围=0.99-1.79），而 对于两个年龄组通常相当（≥0.038；ES 范围=0.07-1.03）。此外，O16 在 2000 米测功仪比赛中表现出更好的成绩（即总时间更短）（=0.011；ES=-1.31）。一般来说，在深蹲跳（或 范围=-0.294 至-0.922）和俯姿卧拉（或 范围=-0.322 至-0.928）中，赛艇表现与 L-V 关系变量之间均获得了显著相关性。这些结果支持 L-V 关系作为一种敏感的程序，用于评估竞技赛艇运动员下肢和上肢肌肉的最大机械能力。L-V 关系变量足以区分不同年龄组的赛艇运动员（U16 O16）。L-V 变量与 2000 米测功仪性能（总时间）显著相关。这种新的测试方法可以为从业者和教练提供一种更简单、更精确的替代方案，以全面评估赛艇运动员的最大神经肌肉特征。
