Athletics, The University of Alabama in Huntsville, Huntsville, Alabama.
J Strength Cond Res. 2019 Apr;33(4):1035-1042. doi: 10.1519/JSC.0000000000003090.
Whitehead, PN, Conners, RT, and Shimizu, TS. The effect of in-season demands on lower-body power and fatigue in male collegiate hockey players. J Strength Cond Res 33(4): 1035-1042, 2019-The purpose of this study was to determine the effect of in-season demands, such as games, travel, and the subsequent fatigue related to these demands, on lower-body power (LBP) in collegiate hockey players. Two jump protocols (countermovement and squat jumps) were used to calculate LBP. Twenty-seven NCAA (National Collegiate Athletic Association) Division I male hockey players (age, 21.9 ± 1.4 years; height, 176.7 ± 6.5 cm; body mass, 81.4 ± 7.9 kg) participated in the study that spanned 18 weekly sessions. At each session, participants completed an 8-item fatigue questionnaire, which provided a cumulative numerical value for fatigue (total score of fatigue [TSF]), before performing maximal jumps on a contact mat. General linear modeling was conducted to compare dependent variables (jump height, relative LBP, TSF) across weekly sessions. Pearson product-moment correlation coefficients were calculated to examine the relationship between jump height and LBP across the jump protocols, as well as to examine the relationship of TSF with all measured variables. Jump height and LBP declined throughout the season with greater effect of travel observed following the longest travel sequence (p ≤ 0.05; η ≥ 0.60). Differences in TSF were observed from baseline (p ≤ 0.037), and a large effect was seen for away trips that included air travel (d ≥ 1.35). Total score of fatigue had a negative correlation with jump height and power during both jumps (r ≤ -0.742; p < 0.001). In conclusion, the in-season demands of ice hockey resulted in significant reductions in LBP throughout a hockey season, and the 8-item fatigue questionnaire is a sensitive tool reflective of athletic performance measures.
怀特黑德、康纳斯、清水和世。赛季中需求对男性大学生曲棍球运动员下肢力量和疲劳的影响。J 力量与调理研究 33(4):1035-1042,2019-本研究的目的是确定赛季中需求的影响，如比赛、旅行以及由此产生的与这些需求相关的疲劳，对大学生曲棍球运动员下肢力量（LBP）的影响。使用两种跳跃方案（反跳和深蹲跳）来计算 LBP。27 名 NCAA（美国全国大学体育协会）一级男子曲棍球运动员（年龄，21.9±1.4 岁；身高，176.7±6.5cm；体重，81.4±7.9kg）参加了这项跨越 18 周的研究。在每次会议上，参与者在接触垫上进行最大跳跃之前，完成了一个 8 项疲劳问卷，该问卷为疲劳提供了一个累积数值（总疲劳分数[TSF]）。使用一般线性模型比较每周会议的因变量（跳跃高度、相对 LBP、TSF）。计算 Pearson 积矩相关系数以检查跳跃协议中跳跃高度和 LBP 之间的关系，以及检查 TSF 与所有测量变量之间的关系。整个赛季跳跃高度和 LBP 都有所下降，旅行后的影响最大观察到最长的旅行序列（p≤0.05；η≥0.60）。TSF 的差异从基线开始观察到（p≤0.037），并且包括空中旅行在内的客场旅行效果很大（d≥1.35）。总疲劳分数与两次跳跃中的跳跃高度和力量呈负相关（r≤-0.742；p<0.001）。总之，曲棍球赛季的比赛需求导致 LBP 显著下降，而 8 项疲劳问卷是反映运动表现的敏感工具。
