Department of Physical Education, State University of Maringa, Maringa, Brazil.
Department of Sport, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil ; and.
J Strength Cond Res. 2021 Aug 1;35(8):2294-2301. doi: 10.1519/JSC.0000000000003126.
Figueiredo, DH, Figueiredo, DH, Moreira, A, Gonçalves, HR, and Dourado, AC. Dose-response relationship between internal training load and changes in performance during the preseason in youth soccer players. J Strength Cond Res 35(8): 2294-2301, 2021-The aim of this study was to describe training intensity distribution based on the session rating of perceived exertion (sRPE) and heart rate (HR) methods and examine the dose-response relation between internal training load (ITL) and change in performance of 16 youth soccer players (mean ± SD age: 18.75 ± 0.68 years, height: 175.3 ± 5.5 cm, body mass: 68.7 ± 6.5 kg, and body fat: 10.7 ± 1.2%) belonging to a Brazilian first division team during a 3-week preseason. The sRPE and HR data were registered daily to calculate the ITL and the training intensity distribution, in 3 intensity zones (low, moderate, and high). The Yo-yo Intermittent Recovery Level 1 (Yo-yo IR1) was evaluated before and after experimental period. The total time spent in the low-intensity zone (HR method) was greater (p < 0.01) compared with the moderate- and high-intensity zones. No difference was observed between training intensity zones determined by the sRPE method (p > 0.05). Negative correlations were observed between weekly mean sRPE-TL (r = -0.69), Edward's-TL (r = -0.50), and change in Yo-yo IR1. Linear regression indicated that weekly mean sRPE-TL (F1;14 = 13.3; p < 0.01) and Edward's-TL (F1;14 = 4.8; p < 0.05) predicted 48.7 and 25.5% of the variance in performance change, respectively. Stepwise linear regression revealed that these 2-predictor variables (F2;13 = 18.9; p < 0.001) explained 74.5% of the variance in performance change. The results suggest that the sRPE and HR methods cannot be used interchangeably to determine training intensity distribution. Moreover, sRPE-TL seems to be more effective than the HR-based TL method to predict changes in performance in youth soccer players.
菲格雷多，DH，菲格雷多，DH，莫雷拉，A，贡萨尔维斯，HR，和杜阿尔特，AC。青年足球运动员赛前训练负荷与表现变化之间的剂量-反应关系。J 力量与调节研究 35(8)：2294-2301，2021-本研究的目的是描述基于感觉运动评估 (sRPE) 和心率 (HR) 方法的训练强度分布，并检查青年足球运动员内部训练负荷 (ITL) 与 16 名青年足球运动员表现变化之间的剂量-反应关系（平均±标准差年龄：18.75±0.68 岁，身高：175.3±5.5cm，体重：68.7±6.5kg，体脂：10.7±1.2%）属于巴西甲级联赛球队在为期 3 周的赛前期间。sRPE 和 HR 数据每天都有记录，以计算 ITL 和训练强度分布，分为 3 个强度区（低、中、高）。在实验前和实验后评估了 Yo-yo 间歇性恢复水平 1（Yo-yo IR1）。使用 HR 方法时，低强度区的总时间（HR 方法）大于（p<0.01）中高强度区。使用 sRPE 方法确定的训练强度区之间没有差异（p>0.05）。每周平均 sRPE-TL（r=-0.69）、爱德华氏 TL（r=-0.50）和 Yo-yo IR1 变化之间存在负相关。线性回归表明，每周平均 sRPE-TL（F1;14=13.3；p<0.01）和爱德华氏 TL（F1;14=4.8；p<0.05）分别预测了表现变化的 48.7%和 25.5%。逐步线性回归显示，这两个预测变量（F2;13=18.9；p<0.001）解释了表现变化的 74.5%。结果表明，sRPE 和 HR 方法不能互换使用来确定训练强度分布。此外，sRPE-TL 似乎比基于 HR 的 TL 方法更有效地预测青年足球运动员的表现变化。
