n International SportMed Journal - Effects on muscle performance of two jumping and two cycling bouts separated by 60 minutes : original research article

Volume 11, Issue 2
  • ISSN : 1528-3356



: Exercise-induced changes in muscle force depend on metabolic fatigue, muscle damage, and low-frequency fatigue. As far as is known, no study has investigated how these types of fatigue manifest during a repeated bout of exercise shortly after the first bout. : To examine changes in muscle performance after two bouts of maximal jumping or cycling exercise with a short interval between bouts. : Experimental laboratory study. : Men (n=10) performed two bouts of jumping (50 continuous jumps) or cycling (30s Wingate test) with a 60min rest between bouts and a one-month interval between jumping and cycling. The peak quadriceps muscle force evoked by electrical stimulation at 15Hz (P15) or 50Hz (P50) was measured before exercise and 2-, 30-, and 60min after exercise. Muscle soreness and creatine kinase activity were determined 48h after bout 2. : P15 and P50 decreased after the first bouts of jumping and cycling and did not recover to the pre-exercise level within 60min (<0.05). Consequently, the second bout was performed with a still-depressed stimulation force. However, P15, P50, and the P15/P50 ratio did not decline more strongly after bout 2 than after bout 1. : Two different types of exercise caused similar reductions in electrically evoked muscle performance within 60min of exercising. A second bout of jumping or cycling shortly (60min) after the first bout and before full muscle recovery did not exacerbate the impairment of muscle function.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error