Connolly Gavin, Hammer Roger L, Powell Joseph A, O'Connor Paul L
Herbert H. and Grace A. Dow College of Health Professions, School of Health Sciences, Division of Exercise Science, Central Michigan University, Mt. Pleasant, MI, USA.
Department of Nutrition Science, Purdue University, West Lafayette, IN, USA.
Int J Exerc Sci. 2020 Aug 1;13(7):938-949. doi: 10.70252/ATYJ6383. eCollection 2020.
Foam rolling (FR) is a method of self-myofascial release (SMR) implemented to reduce tension in underlying soft tissue, leading to increased range of motion (ROM). The hip adductor muscles of the groin are commonly less flexible and often a site for soft tissue injuries. Limited research has been done to determine the most effective flexibility exercises to increase ROM in the groin muscles prior to exercise without comprising strength. The purpose was to determine the effect of an acute bout of FR on passive groin flexibility and strength. Randomized crossover study with 3 × 2 (Condition × Time) repeated measures ANOVA statistical design. 40 volunteers ( = 20 males; = 20 females) with limited flexibility in groin ROM participated. Following warm-up, maximal voluntary isometric contraction (MVC) and static ROM were measured pre and postintervention. Conditions included 60 seconds of FR, SS, and CON. The Condition × Time interaction was not significant for MVC or ROM. A main effect of time showed a significant increase in ROM from pre to post for FR (1.2°, < 0.001), SS (1.0°, < 0.001), and CON (0.5°, = 0.039). No significant changes in MVC were observed for FR from pre to post ( > 0.05), whereas SS and CON both increased ( < 0.05). An increase in passive groin ROM after acute bouts of SMR or SS without compromising MVC was observed. This suggests that 60 seconds of FR may be employed before exercise to improve flexibility without strength decrement.
泡沫轴放松（FR）是一种自我肌筋膜放松（SMR）方法，旨在减轻深层软组织的紧张度，从而增加关节活动范围（ROM）。腹股沟的髋内收肌通常柔韧性较差，且常常是软组织损伤的部位。在不影响力量的前提下，关于确定最有效的柔韧性练习以增加运动前腹股沟肌肉ROM的研究较少。本研究目的是确定一次急性泡沫轴放松对被动腹股沟柔韧性和力量的影响。采用3×2（条件×时间）重复测量方差分析统计设计的随机交叉研究。40名腹股沟ROM柔韧性有限的志愿者（男性20名；女性20名）参与研究。热身之后，在干预前后测量最大自主等长收缩（MVC）和静态ROM。条件包括60秒的泡沫轴放松、静态拉伸（SS）和对照组（CON）。条件×时间交互作用对MVC或ROM均无显著影响。时间的主效应显示，泡沫轴放松组（1.2°，P<0.001）、静态拉伸组（1.0°，P<0.001）和对照组（0.5°，P = 0.039）从干预前到干预后的ROM均显著增加。泡沫轴放松组从干预前到干预后的MVC未观察到显著变化（P>0.05），而静态拉伸组和对照组均增加（P<0.05）。观察到在急性自我肌筋膜放松或静态拉伸后，被动腹股沟ROM增加且不影响MVC。这表明，在运动前可采用60秒的泡沫轴放松来提高柔韧性而不降低力量。
