Muscle Damage Response in Female Collegiate Athletes After Repeated Sprint Activity. Issue 10 (October 2015)

• Record Type: Journal Article
• Authors: Keane, Karen M.; Salicki, Rebecca; Goodall, Stuart; Thomas, Kevin; Howatson, Glyn
• Is Part Of: Journal of strength and conditioning research. Volume 29:Issue 10(2015)
• Publication Date: 2015-10
• Subjects: females -- muscle function -- recovery -- exercise-induced muscle damage; Physical education and training -- Periodicals; Weight training -- Physiological aspects -- Periodicals; Physical fitness -- Periodicals; 613.7
• DOI: 10.1519/JSC.0000000000000961
• Languages: English
• ISSNs: 1064-8011

Abstract

Abstract : Abstract: Keane, KM, Salicki, R, Goodall, S, Thomas, K, and Howatson, G. Muscle damage response in female collegiate athletes after repeated sprint activity. J Strength Cond Res 29(10): 2802–2807, 2015—Exercise-induced muscle damage (EIMD) is a well-investigated area, however there is a paucity of data surrounding the damage response in females. The aim of this study was to examine the damage responses from a sport-specific bout of repeated sprints in female athletes. Eleven well-trained females (mean ± SD ; age: 22 ± 3 years; height: 166.6 ± 5.7 cm; mass: 62.7 ± 4.5 kg) in the luteal phase of the menstrual cycle completed a repeated sprint protocol designed to induce EIMD (15 × 30 m sprints). Creatine kinase, countermovement jump height, knee extensor maximal voluntary isometric contraction (MVIC) force, delayed onset muscle soreness (DOMS), 30-m sprint time, and limb girth were recorded before, after, 24, 48, and 72 hours after exercise. Creatine kinase was elevated at 24, 48, and 72 hours ( p ⩽ 0.05), peaking at 24 hours (+418%) and returning toward baseline at 72 hours. Countermovement jump height was reduced immediately after, 24, and 48 hours ( p ⩽ 0.05). Sprint performance was also negatively affected immediately after, 24, 48, and 72 hours after exercise. Muscle soreness peaked at 48 hours ( p < 0.01) and remained significantly elevated at 72 hours after exercise ( p < 0.01). Limb girth and MVIC did not alter over time. This study provides new information on the EIMD response in trained females after a sport-specific bout of repeated sprints. Importantly, this damage response has the potential to negatively affect performance for several days after exercise.