Document Detail

High anaerobic energy release during submaximal arm exercise.
MedLine Citation:
PMID:  8435979     Owner:  NLM     Status:  MEDLINE    
The anaerobic energy release during submaximal arm (AE) and leg exercise (LE) has been estimated from O2 deficit measured at the onset of exercise. Eight male subjects were studied during 8-10 min of arm or leg cycling at the same relative workload (53% of the peak exercise-induced increase in pulmonary oxygen uptake, VO2). The workloads were 78 +/- 4 W during AE and 173 +/- 11 W during LE and VO2 was 1.51 +/- 0.06 1 min-1 for AE and 2.33 +/- 0.15 1 min-1 for LE. The half-time of the VO2 on-response was considerably longer (P < 0.01) during AE (62 +/- 9 s) than during LE (33 +/- 4 s) and the peak blood lactate concentration was higher (P < 0.05) during AE (4.8 +/- 0.5 mmol.l-1) than during LE (3.5 +/- 0.4 mmol.l-1). Oxygen deficit was 1.64 +/- 0.16 and 1.78 +/- 0.16 1 for AE and LE respectively. Oxygen deficit was higher during AE than during LE when related to absolute workload (P < 0.01), or to VO2 at steady state (P < 0.001) or to limb volume (P < 0.001). The proportion of the total energy demand covered by anaerobic energy release at the onset of exercise (0-8 min) was about 54% higher (P < 0.01) during AE than during LE. It is concluded that the energy release to a greater extend is covered by anaerobic processes during AE than during LE.
M Jensen-Urstad; I Hallbäck; K Sahlin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical physiology (Oxford, England)     Volume:  13     ISSN:  0144-5979     ISO Abbreviation:  Clin Physiol     Publication Date:  1993 Jan 
Date Detail:
Created Date:  1993-03-19     Completed Date:  1993-03-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309768     Medline TA:  Clin Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  81-7     Citation Subset:  IM    
Department of Clinical Physiology, Södersjukhuset, Stockholm, Sweden.
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MeSH Terms
Arm / physiology*
Energy Metabolism / physiology*
Exercise / physiology*
Heart Rate / physiology
Lactates / blood
Leg / physiology
Oxygen Consumption / physiology
Reg. No./Substance:

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