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Effects of ischaemic training on local aerobic muscle performance in man
Karolinska Institutet.
1993 (English)In: Acta Physiologica Scandinavica, ISSN 0001-6772, E-ISSN 1365-201X, Vol. 148, no 1, 13-19 p.Article in journal (Refereed) Published
Abstract [en]

The aim of the study was to compare the effects of ischaemic and non-ischaemic training on aerobic performance. In 10 subjects, peak oxygen uptake (peak VO2) and time to fatigue (TTF) for one-legged exercise were measured before and after 4 weeks (4 times week-1) of one-legged training. Each training session started with one leg training for 45 min with 20% blood-flow reduction induced by local application of a supra-atmospheric external pressure of 50 mmHg (ischaemic leg; I-leg). We have previously shown that this decreases leg blood flow by about 20%. The contralateral leg (non-restricted-flow leg; N-leg), serving as a control, then trained with an identical power-output profile for 45 min but without flow restriction. In the I-leg the average training-induced increments in TTF and peak VO2 were 27 and 24%, respectively. In the N-trained leg TTF and peak-VO2 increased 10 and 14%, respectively. Both increments were significantly greater (P < 0.05) in the I-trained leg. Moreover, the performance increase in the I-trained leg was exaggerated (P < 0.05) in the ischaemic test condition, i.e. there was a specificity in the training response. In conclusion, ischaemia acts as an additive stimulus to training leading to an exaggerated increase in endurance and peak-VO2 compared to identical training without blood-flow restriction. The main explanation is probably an enhanced local adaptation in the I-trained leg.

Place, publisher, year, edition, pages
1993. Vol. 148, no 1, 13-19 p.
Keyword [en]
blood-flow restriction, endurance exercise, healthy subjects, hypoxia;intermittent claudication, ischaemic training, leg positive pressure, lower body positive pressure, one-legged cycle exercise, perfusion pressure
National Category
Physiology
Identifiers
URN: urn:nbn:se:kth:diva-44621DOI: 10.1111/j.1748-1716.1993.tb09526.xISI: A1993LC63400002PubMedID: 8333292OAI: oai:DiVA.org:kth-44621DiVA: diva2:452041
Note
QC 20111111Available from: 2011-10-27 Created: 2011-10-25 Last updated: 2017-12-08Bibliographically approved

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