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Comparison of incremental and steady state tests of endurance training
- Source :
- European Journal of Applied Physiology and Occupational Physiology. 57:474-481
- Publication Year :
- 1988
- Publisher :
- Springer Science and Business Media LLC, 1988.
-
Abstract
- To compare the results obtained by incremental or constant work load exercises in the evaluation of endurance conditioning, a 20-week training programme was performed by 9 healthy human subjects on the bicycle ergometer for 1 h a day, 4 days a week, at 70-80% VO2max. Before and at the end of the training programme, (1) the blood lactate response to a progressive incremental exercise (18 W increments every 2nd min until exhaustion) was used to determine the aerobic and anaerobic thresholds (AeT and AnT respectively). On a different day, (2) blood lactate concentrations were measured during two sessions of constant work load exercises of 20 min duration corresponding to the relative intensities of AeT (1st session) and AnT (2nd session) levels obtained before training. A muscle biopsy was obtained from vastus lateralis at the end of these sessions to determine muscle lactate. AeT and AnT, when expressed as % VO2max, increased with training by 17% (p less than 0.01) and 9% (p less than 0.05) respectively. Constant workload exercise performed at AeT intensity was linked before training (60% VO2max) to a blood lactate steady state (4.8 +/- 1.4 mmol.l-1) whereas, after training, AeT intensity (73% VO2max) led to a blood lactate accumulation of up to 6.6 +/- 1.7 mmol.l-1 without significant modification of muscle lactate (7.6 +/- 3.1 and 8.2 +/- 2.8 mmol.kg-1 wet weight respectively). It is concluded that increase in AeT with training may reflect transient changes linked to lower early blood lactate accumulation during incremental exercise.(ABSTRACT TRUNCATED AT 250 WORDS)
- Subjects :
- Adult
Male
medicine.medical_specialty
Physiology
Physical Exertion
Differential Threshold
Physical exercise
Incremental exercise
chemistry.chemical_compound
Oxygen Consumption
Animal science
Endurance training
Physiology (medical)
Blood lactate
Homeostasis
Humans
Medicine
Orthopedics and Sports Medicine
Lactic Acid
Physical Education and Training
business.industry
Muscles
Osmolar Concentration
Public Health, Environmental and Occupational Health
General Medicine
Aerobiosis
Lactic acid
chemistry
Lactates
Physical Endurance
Physical therapy
Female
Bicycle ergometer
Steady state (chemistry)
business
Anaerobic exercise
Subjects
Details
- ISSN :
- 14396327 and 03015548
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- European Journal of Applied Physiology and Occupational Physiology
- Accession number :
- edsair.doi.dedup.....f38437a2ecc0a0204a63db346003c8be