Physical Activity, Sport, and Recreation (PhASRec) Research Focus Area, North-West University, Potchefstroom,South Africa.
Int J Sports Physiol Perform. 2022 Apr 22;17(9):1382-1390. doi: 10.1123/ijspp.2021-0483. Print 2022 Sep 1.
The Yo-Yo Intermittent Recovery Test Level 1 (YYIR1) is often utilized to indirectly assess the cardiorespiratory fitness of team-sport athletes due to its proposed association with match-play high-speed running performance and predicted maximal oxygen uptake. No previous research has investigated the relationships between YYIR1 performances, actual oxygen uptake recorded during the YYIR1, and true all-out sprint kinetics (eg, maximal sprint speed, maximal force capacity, and maximal power output), which therefore served as the primary objective of this study.
To assess the true physiological kinetics (V˙O2 and heart-rate responses) during the YYIR1 and to evaluate the correlations between the physiological kinetics, sprint kinetics, and YYIR1 performance parameters.
A total of 23 amateur male soccer players were recruited for the study (age 22.52 [2.86] y; height 1.75 [0.06] m; body mass 65.61 [8.43] kg). Each participant completed a YYIR1 and 2 all-out sprint tests.
Significant differences were observed between actual and predicted maximal oxygen-uptake values (Mdiff = 17.57 mL·kg-1·min-1, P < .001, r = .63). Shuttle distances showed statistically significant correlations with maximal sprint speed (r = .42, P = .044) and theoretic maximal speed (r = .44, P = .035). However, no other correlations with sprint kinetic parameters (eg, maximal force or power output) were observed.
Practitioners should carefully consider the outcomes and utilities of the parameters derived from the YYIR1. The estimations of maximal oxygen uptake from shuttle performances as a proxy for cardiorespiratory fitness are not adequate. However, shuttle distances appear to be positively associated with all-out sprinting capacities.
由于 Yo-Yo 间歇性恢复测试 1 级（YYIR1）与比赛中高速跑动表现和预测的最大摄氧量呈正相关，因此它常被用于间接评估团队运动运动员的心肺功能。目前尚无研究调查 YYIR1 表现、YYIR1 期间实际耗氧量与真实全力冲刺动力学（如最大冲刺速度、最大力量能力和最大功率输出）之间的关系，这是本研究的主要目的。
评估 YYIR1 期间的真实生理动力学（摄氧量和心率反应），并评估生理动力学、冲刺动力学和 YYIR1 表现参数之间的相关性。
共有 23 名业余男性足球运动员参与了这项研究（年龄 22.52[2.86]岁；身高 1.75[0.06]米；体重 65.61[8.43]公斤）。每位参与者都完成了一次 YYIR1 和 2 次全力冲刺测试。
实际和预测最大摄氧量值之间存在显著差异（Mdiff=17.57 mL·kg-1·min-1，P<.001，r=.63）。往返跑距离与最大冲刺速度（r=.42，P=.044）和理论最大速度（r=.44，P=.035）呈统计学显著相关。然而，与冲刺动力学参数（如最大力量或功率输出）没有观察到其他相关性。
从业者应仔细考虑 YYIR1 得出的参数的结果和效用。从往返跑表现估算最大摄氧量作为心肺功能的替代指标并不充分。然而，往返跑距离似乎与全力冲刺能力呈正相关。
