Vicari Domenico Savio Salvatore, Patti Antonino, Giustino Valerio, Belmonte Giacomo, Alamia Giuseppe, Gervasi Marco, Fernández Peña Eneko, Palma Antonio, Schena Federico, Bianco Antonino, Thomas Ewan
Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy.
Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
Front Sports Act Living. 2024 Oct 17;6:1472550. doi: 10.3389/fspor.2024.1472550. eCollection 2024.
While pedaling, cyclists rest their pelvis on the saddle, generating pressures on it. The pressures generated on the saddle are influenced by several factors. This study aimed to evaluate whether the flexibility of hamstring and lower back muscles could be considered a predictor of pressures in the anterior region (PAR) on the saddle.
For this study, 15 young off-road Italian cyclists (11m, 4f) aged 13-16 (Italian Federation categories: ES1, ES2, AL1, AL2) were recruited. Each participant was administered the V sit-and-reach (VSR) to measure the hamstring and lower back muscles flexibility. Subsequently, after performing a bike fitting, the saddle pressures during pedaling at three different intensities (100, 140, 180 W), with participants on their own bike installed on specific bike roller, were recorded. The parameters considered for statistical analysis were front pressure (%) and back pressure (%).
The hamstring and lower back muscles flexibility, as result of the VSR test, was a predictor of saddle PAR at 100 W (R = 0.362, = 0.018), at 140 W (R = 0.291, = 0.038), and at 180 W (R = 0.349, = 0.020) of pedaling intensity.
Higher values of the VSR could predict lower values of the pressures exerted in the front region of the saddle. The hamstring and lower back muscles flexibility may be considered a predictor of PAR on the saddle.
骑自行车时，骑行者将骨盆置于车座上，会在车座上产生压力。车座上产生的压力受多种因素影响。本研究旨在评估腘绳肌和下背部肌肉的柔韧性是否可被视为车座前部区域（PAR）压力的预测指标。
本研究招募了15名年龄在13 - 16岁的意大利年轻越野自行车手（11名男性，4名女性，意大利自行车联合会组别：ES1、ES2、AL1、AL2）。对每位参与者进行坐姿体前屈（VSR）测试，以测量腘绳肌和下背部肌肉的柔韧性。随后，在进行自行车调整后，记录参与者在安装于特定自行车滚筒上的自己的自行车上以三种不同强度（100、140、180瓦）蹬踏时的车座压力。用于统计分析的参数为前压力（%）和后压力（%）。
VSR测试结果显示，腘绳肌和下背部肌肉的柔韧性是蹬踏强度为100瓦（R = 0.362，P = 0.018）、140瓦（R = 0.291，P = 0.038）和180瓦（R = 0.349，P = 0.020）时车座PAR的预测指标。
VSR值越高，可预测车座前部区域施加的压力值越低。腘绳肌和下背部肌肉的柔韧性可被视为车座PAR的预测指标。
