Symons T Brock, Roberts Alexandra H, Carter Kathleen A, Caruso John F
Department of Counselling, Health, and Kinesiology, Texas A&M University-San Antonio, San Antonio, TX 78224, USA.
Department of Dietetics, Nutrition and Sport, La Trobe University, Melbourne, VIC 3086, Australia.
J Funct Morphol Kinesiol. 2023 Jun 24;8(3):89. doi: 10.3390/jfmk8030089.
Field lacrosse requires sudden directional changes and rapid acceleration/deceleration. The capacity to perform these skills is dependent on explosive muscle force production. Limited research exists on the potential of sprint interval training (SIT) to impact explosive muscle force production in field lacrosse players. The purpose of this study is to examine SIT, concurrent to field-lacrosse-specific training, on the rate of torque development (RTD), contractile impulse, and muscle function in female high school field lacrosse players (n = 12; 16 ± 1 yrs.). SIT was performed three times per week, concurrent to field-lacrosse-specific training, for 12 weeks. Right lower-limb muscle performance was assessed pre-, mid-, and post-SIT training via isometric and isokinetic concentric knee extensor contractions. Outcomes included RTD (Nm·s), contractile impulse (Nm·s), and peak torque (Nm). RTD for the first 50 ms of contraction improved by 42% by midseason and remained elevated at postseason ( = 0.004, effect size (ES) = -577.3 to 66.5). Contractile impulse demonstrated a training effect across 0-50 ms (42%, = 0.004, ES = -1.4 to 0.4), 0-100 ms (33%, = 0.018, ES = 3.1 to 0.9), and 0-200 ms (22%, = 0.031, ES = -7.8 to 1.6). Isometric (0 rad·s) and concentric (3.1 rad·s) strength increased by 20% ( = 0.002, ES = -60.8 to -20.8) and 9% ( = 0.038, ES = -18.2 to 0.0) from SIT and field-lacrosse-specific training, respectively ( < 0.05). SIT, concurrent to field-lacrosse-specific training, enhanced lower-limb skeletal muscle performance, which may enable greater sport-specific gains.
长曲棍球运动需要突然的方向改变以及快速的加速/减速。执行这些技能的能力取决于爆发性肌肉力量的产生。关于冲刺间歇训练（SIT）对长曲棍球运动员爆发性肌肉力量产生的影响，现有研究有限。本研究的目的是探讨在女子高中长曲棍球运动员（n = 12；16±1岁）中，与长曲棍球专项训练同时进行SIT，对扭矩发展速率（RTD）、收缩冲量和肌肉功能的影响。SIT每周进行三次，与长曲棍球专项训练同时进行，为期12周。在SIT训练前、训练中期和训练后期，通过等长和等速向心膝关节伸展收缩评估右下肢肌肉表现。结果包括RTD（Nm·s）、收缩冲量（Nm·s）和峰值扭矩（Nm）。赛季中期，收缩开始的前50毫秒的RTD提高了42%，并且在赛季后期保持升高（P = 0.004，效应量（ES） = -577.3至66.5）。收缩冲量在0 - 50毫秒（42%，P = 0.004，ES = -1.4至0.4）、0 - 100毫秒（33%，P = 0.018，ES = 3.1至0.9）和0 - 200毫秒（22%，P = 0.031，ES = -7.8至1.6）显示出训练效果。等长（0 rad·s）和向心（3.1 rad·s）力量分别因SIT和长曲棍球专项训练提高了20%（P = 0.002，ES = -60.8至-20.8）和9%（P = 0.038，ES = -18.2至0.0）（P < 0.05）。与长曲棍球专项训练同时进行的SIT增强了下肢骨骼肌表现，这可能使运动员在专项运动中获得更大的提升。
