کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2846839 | 1571314 | 2015 | 8 صفحه PDF | دانلود رایگان |
• Exercise-induced muscle damage reduces running V̇O2peak for up to 7 days.
• Reductions in V̇O2 peak were not related to reductions in strength or DOMS.
• EIMD increased muscle pain during submaximal running when soreness was at its peak.
V̇O2 peak has been shown to be reduced 48 h following exercise-induced muscle damage (EIMD), but it is unclear how long this reduction may persist. In this study eight endurance trained participants (21.5 ± 1.1 years old) performed a maximal exercise tests over 10-days followings EIMD. Cardiorespiratory variables were collected via open-circuit spirometry and soreness, maximal strength (MVC), motor-unit recruitment, and contractile properties were assessed prior to each test. MVC was reduced for up to 4-days (p ≤ 0.05) and soreness was evident for 10-days in the quadriceps (p < 0.05). V̇O2peak was reduced 7.4% 2-days post EIMD (55.5 ± 6.0 vs. 51.3 ± 5.8; p = 0.006) and remained reduced in 6 of 8 participants at 10-days post (p = 0.005). No relationship was found between changes in MVC, soreness, motor-unit recruitment, and contractile properties and changes in V̇O2peak (p > 0.05). EIMD resulted in small, but prolonged reductions in V̇O2peak. Our findings suggest mechanisms aside from force loss and soreness are primarily responsible for the reductions in V̇O2peak after EIMD.
Journal: Respiratory Physiology & Neurobiology - Volume 216, 15 September 2015, Pages 70–77