Recovery from Short Term Intense Exercise: Its Relation to Capillary Supply and Lactate Release,
Abstract
Muscle force recovery from short term intense exercise was examined in 16 physically active men. They performed 50 consecutive maximal voluntary knee extensions. Following a 40 s rest period 5 additional maximal contractions were executed. The decrease in torque during the 50 contractions and the peak torque during the 5 contractions relative to initial torque were used as indicies for fatigue and recovery, respectively. Venous blood samples were collected repeatedly up to 8 min past exercise for subsequent lactate analyses. Muscle biopsies were obtained from m. vastus lateralis and analysed for fiber type composition, fiber are and capillary density. Peak torque decreased 67 (range 47-82)% as a result of the repeated contractions. Lactate concentration after the 50 contractions was 2.9 + or - 1.3 m/mol and the peak post exercise value averaged 8.7 + or - 2.1 m/mol. Based on the present findings it is suggested that lactate elimination from the exercising muscle is dependent upon the capillary supply and influences the rate of muscle force recovery.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1982
- Accession Number
- ADA124965
Entities
People
- James E. Wright
- Per A. Tesch
Organizations
- United States Army Research Institute of Environmental Medicine