Center of Excellence for Sport Science and Coach Education, Department of Sport, Exercise, Recreation, and Kinesiology, East Tennessee State University, Johnson City, Tennessee.
Department of Health, Exercise, and Sport Science, The Citadel-The Military College of South Carolina, Charleston, South Carolina.
J Strength Cond Res. 2018 Apr;32(4):1020-1028. doi: 10.1519/JSC.0000000000001912.
Bazyler, CD, Mizuguchi, S, Sole, CJ, Suchomel, TJ, Sato, K, Kavanaugh, AA, DeWeese, BH, and Stone, MH. Jumping performance is preserved but not muscle thickness in collegiate volleyball players after a taper. J Strength Cond Res 32(4): 1020-1028, 2018-The purpose of this study was to examine changes in muscle architecture and jumping performance in NCAA division I women's volleyball players throughout a competitive season and in preparation for conference championships. Ten women volleyball players were tested at preseason (T1), pretaper (T2), and post-taper (T3) on measures of vastus lateralis muscle thickness (MT), pennation angle (PA) and fascicle length (FL) using ultrasonography, and unloaded and loaded squat jump height (SJH) and peak power allometrically scaled to body mass (SJPPa) on a force platform. Rating of perceived exertion training load and strength training volume load were monitored weekly. Player's MT (p < 0.001, Glass's Δ = 2.8) and PA increased (p = 0.02, Δ = 3.9) after in-season training. However, MT decreased after the taper (p = 0.01, Δ = 0.6) but remained elevated above preseason values (p < 0.001, Δ = 1.7). There were no statistical changes in FL, SJH, or SJPPa. Large-to-very large negative relationships (r = -0.51 to -0.81) were observed between preseason relative maximal strength and changes in SJH and SJPPa with various loads over the season. These findings demonstrate that relatively low volumes of strength training and concurrent sport training during a tapering period are capable of preserving jumping performance, but not MT in women's volleyball players; however, jumping performance changes seem to be related to the player's strength level. Stronger players may benefit from an overreaching microcycle before the taper to preserve previously accrued muscular adaptations and jumping performance.
巴泽勒、米祖古奇、索莱、舒科梅尔、佐藤、卡瓦纳夫、德威斯和斯通。在减量后，大学生排球运动员的跳跃表现得到保持，但肌肉厚度没有变化。《美国体能协会杂志》32 卷 4 期（2018 年）-本研究的目的是研究美国大学生体育协会（NCAA）一级女子排球运动员在整个赛季和为参加会议锦标赛做准备的过程中肌肉结构和跳跃表现的变化。10 名女子排球运动员在赛季前（T1）、赛前减量（T2）和赛后减量（T3）时接受了超声检查，测量股外侧肌厚度（MT）、肌节角度（PA）和肌纤维长度（FL），并在力量平台上进行了非负重和负重深蹲跳高度（SJH）和峰值功率的等比体质量（SJPPa）测试。每周监测训练负荷和力量训练量。运动员的 MT（p < 0.001，Glass's Δ = 2.8）和 PA 增加（p = 0.02，Δ = 3.9）。然而，MT 在减量后下降（p = 0.01，Δ = 0.6），但仍高于赛季前的值（p < 0.001，Δ = 1.7）。FL、SJH 和 SJPPa 没有统计学变化。赛季中，与各种负荷相关的 SJH 和 SJPPa 的预季相对最大力量的变化呈较大至非常大的负相关（r = -0.51 至-0.81）。这些发现表明，在减量期间，相对较低的力量训练量和同时进行的运动训练能够保持女子排球运动员的跳跃表现，但不能保持 MT；然而，跳跃表现的变化似乎与运动员的力量水平有关。更强壮的运动员可能受益于在减量前进行过度训练微周期，以保持之前获得的肌肉适应和跳跃表现。
