Back to Search
Start Over
Effects of endurance training on hyperammonaemia during a 45-min constant exercise intensity
- Source :
- European journal of applied physiology and occupational physiology. 59(4)
- Publication Year :
- 1989
-
Abstract
- Eleven laboratory-pretrained subjects (initial\(\dot V_{O_{2max} } \)=54 ml·kg−1·min−1) took part in a study to evaluate the effect of a short endurance training programme [8–12 sessions, 1 h per session, with an intensity varying from 60% to 90% maximal oxygen consumption\((\dot V_{O_{2max} } )\)] on the responses of blood ammonia (b[NH4+]) and lactate (b[la]) concentrations during progressive and constant exercise intensities. After training, during which\(\dot V_{O_{2max} } \) did not increase, significant decreases in b[NH4+], b[la] and muscle proton concentration were observed at the end of the 80%\(\dot V_{O_{2max} } \) constant exercise intensity, although b[NH4+] and b[la] during progressive exercise were unchanged. On the other hand, no correlations were found between muscle fibre composition and b[NH4+] in any of the exercise procedures. This study demonstrated that a constant exercise intensity was necessary to reveal the effect of training on muscle metabolic changes inducing the decrease in b[NH4+] and b[la]. At a relative power of exercise of 80%\(\dot V_{O_{2max} } \), there was no effect of muscle fibre composition on b[NH4+] accumulation.
- Subjects :
- inorganic chemicals
Adult
Male
medicine.medical_specialty
Physiology
Physical Exertion
Relative power
Oxygen Consumption
Endurance training
Ammonia
Physiology (medical)
Muscle fibre composition
medicine
Humans
Orthopedics and Sports Medicine
Exercise
Chemistry
Muscles
Public Health, Environmental and Occupational Health
VO2 max
General Medicine
Surgery
Crystallography
Exercise intensity
Lactates
Physical Endurance
Blood ammonia
Constant (mathematics)
Intensity (heat transfer)
Subjects
Details
- ISSN :
- 03015548
- Volume :
- 59
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- European journal of applied physiology and occupational physiology
- Accession number :
- edsair.doi.dedup.....0e6339311adb23fc0fc6a5cc38c09d40