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Post exercise protein ingestion does not attenuate delayed onset muscle soreness
Author(s) -
Philp Andrew,
Etheridge Timothy,
Watt Peter W
Publication year - 2006
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.20.5.lb26
Subject(s) - ingestion , delayed onset muscle soreness , medicine , cardiology , muscle damage , physical medicine and rehabilitation , endocrinology
The aim of the study was to examine whether ingestion of protein following eccentric exercise (EE) could aid recovery and alleviate symptoms associated with delayed onset of muscle soreness (DOMS) in the 72 h post exercise. Methods Seven male subjects (Age 21 ± 1 yrs; Mass 76 ± 3 kg; Height 180 ± 1 cm Mean ± SEM) volunteered to take part in the study. Each subject visited the lab on two separate occasions separated by 14 days. A 10ml venous blood sample was taken following an overnight fast and analysed for serum Creatine Kinase (CK) and Protein Carbonyl (PC) content. Peak isometric Maximum Voluntary Contraction (MVC) was recorded, Peak power output (PPO) was determined by a 5 second sprint against a resistance of 7.5% body weight, on a cycle ergometer fitted with SRM power cranks. Subjects then completed a 30‐minute downhill run (−10°) at a target heart rate of 150 ± 5 bpm. On completion, the subjects ingested a protein (40g EAA) or placebo solution. Venous blood, MVC and PPO were recorded in the subsequent 24, 48 and 72 h. DOMS was assessed by algometry. Results CK and PC peaked after 24h ( P < 0.05) with PC remaining elevated for 72h post exercise. PPO and MVC declined following EE however there were no differences observed between conditions. Conclusion Eccentric exercise resulted in a decline in MVC and PPO and an associated increase in CK, PC and DOMS in the 72 h post exercise. Protein ingestion did not attenuate the performance depressive effect of DOMS or alleviate an increase in muscle damage markers following EE. Therefore the suitability of protein supplements for promoting recovery from exhaustive exercise should be revisited.