Philipp Nicolas M, Blackburn Stryder D, Cabarkapa Dimitrije, Fry Andrew C
Jayhawk Athletic Performance Laboratory-Wu Tsai Human Performance Alliance, University of Kansas, University of Kansas, Lawrence, Kansas.
J Strength Cond Res. 2024 Dec 1;38(12):2136-2146. doi: 10.1519/JSC.0000000000004906. Epub 2024 Sep 17.
Philipp, NM, Blackburn, SD, Cabarkapa, D, and Fry, AC. The effects of a low-volume, high-intensity pre-season micro-cycle on neuromuscular performance in collegiate female basketball players. J Strength Cond Res 38(12): 2136-2146, 2024-The use of stretch-shortening cycle (SSC)-based measures of vertical jump performance to monitor responses to training exposures is common practice in sport science. However, evidence is limited with regards to which assessments and metrics may be most sensitive toward changes in training volume and intensity. The aim of this study was to investigate how a reduction in training volume, paralleled with an increase in training intensity, affects neuromuscular performance as measured through a countermovement jump (CMJ) and 10-5 hop test over a preseason period in female collegiate basketball players. Over a 3-week baseline period, athletes completed CMJ and 10-5 hop tests to quantify baseline performance. Measures of neuromuscular response to the changes in training volume and intensity were performed 2 and 4 days into the intervention week, as well as post 72 hours, post 7 days, and post 10 days. External workload data and descriptive analyses of resistance training stimuli suggest that during the intervention week, athletes experienced significantly lower training volumes and increases in training intensity. In response to these changes in training stimulus, athletes showed depressed performance acutely in metrics derived from both the CMJ and 10-5 hop test. Authors also observed a supercompensation effect at post 72 h, post one week, and post 2 weeks for metrics related to lower-limb stiffness and braking rate of force development. These findings highlight that in response to a high-intensity, low-volume training phase, female basketball players experienced alterations in lower-limb function, reflected in both decreases and increases in SSC performance.
菲利普,新墨西哥州,布莱克本,南达科他州,卡巴尔卡帕,D,以及弗莱,AC。低容量、高强度季前微周期对大学女子篮球运动员神经肌肉性能的影响。《力量与体能研究杂志》38(12): 2136 - 2146,2024年——在体育科学中,使用基于拉伸-缩短周期(SSC)的垂直跳跃性能测量方法来监测对训练刺激的反应是常见做法。然而,关于哪些评估和指标可能对训练量和强度的变化最为敏感的证据有限。本研究的目的是调查在女子大学篮球运动员的季前赛期间,训练量的减少与训练强度的增加如何通过反向移动跳跃(CMJ)和10 - 5跳测试来影响神经肌肉性能。在为期3周的基线期内,运动员完成CMJ和10 - 5跳测试以量化基线性能。在干预周的第2天和第4天,以及72小时后、7天后和10天后,进行对训练量和强度变化的神经肌肉反应测量。外部工作量数据和阻力训练刺激的描述性分析表明,在干预周期间,运动员经历了显著更低的训练量和训练强度的增加。作为对这些训练刺激变化的反应,运动员在源自CMJ和10 - 5跳测试的指标上急性表现下降。作者还观察到在72小时后、一周后和两周后,与下肢刚度和力量发展制动率相关的指标出现超量恢复效应。这些发现突出表明,在应对高强度、低容量训练阶段时,女子篮球运动员下肢功能发生了改变,这在SSC性能的下降和增加中都有体现。