Open AccessThe effect of 30-m repeated sprint exercise on muscle damage indicators, serum insulin-like growth factor-Iand cortisol
Author(s) -
Selcen Korkmaz Eryılmaz,
Zübeyde Aslankeser,
Çiğdem Özdemir,
Kerem Özgünen,
Sadi Kurdak
Publication year - 2019
Publication title -
biomedical human kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.2
H-Index - 4
ISSN - 2080-2234
DOI - 10.2478/bhk-2019-0021
Subject(s) - sprint , isometric exercise , anabolism , medicine , creatine kinase , endocrinology , insulin like growth factor , muscle damage , physical therapy , growth factor , receptor
Summary Study aim: The purpose of this study was to examine the effects of arepeated sprint exercise protocol on muscle damage indicators, serum IGF-Iand cortisol levels. Material and methods: Nine trained male subjects (age 23.3 ± 3.6 years) completed arepeated sprint protocol consisting of two sets of 10 × 30-m maximal sprints with 30 s of active recovery between sprints and 5 min of passive recovery between sets. The isometric strength and flexibility were measured before, immediately after and 24 hours after exercise. 30-m maximal sprint time was measured before and 24 hours after exercise. Blood samples were taken before, immediately after and 24 hours after exercise. Results: Isometric strength and flexibility were significantly decreased after exercise and 24 hours after exercise (p < 0.05). 30-m sprint time was significantly increased 24 hours after exercise (p < 0.05). Asignificant increase in serum lactate dehydrogenase, IGF-Iand cortisol were found after exercise (p < 0.05). Serum creatine kinase increased significantly immediately after and 24 hours after exercise compared to pre-exercise values (p < 0.05). Conclusion: Our data show that due to increased serum IGF-Ilevel, repeated sprint exercise may have anabolic effects as well as traumatic effects on the muscles.