Document Detail

Changes in muscle oxygenation during weight-lifting exercise.
MedLine Citation:
PMID:  7957136     Owner:  NLM     Status:  MEDLINE    
The quantitative analysis of haemoglobin oxygenation of contracting human muscle during weight-lifting exercise was studied noninvasively and directly using near-infrared spectroscopy. This method was developed as a three-wavelength method which confirmed the volume changes in oxygenated haemoglobin (oxy-Hb), deoxygenated haemoglobin (deoxy-Hb) and blood volume (total-Hb; Oxy-Hb+deoxy-Hb). Nine healthy adult men with various levels of training experience took part in the study. Ten repetition maximum (10 RM) one-arm curl exercise was performed by all the subjects. Results showed that at the beginning of the 10-RM exercise, rapid increases of deoxy-Hb and decreases of oxy-Hb were observed. In addition, total-Hb gradually increased during exercise. These results corresponded to the condition of arm blood flow experimentally restricted using a tourniquet in contact with the shoulder joint, and they showed the restriction of venous blood flow and an anoxic state occurring in the dynamically contracted muscle. In three sets of lifting exercise with short rest periods, these tendencies were accelerated in each set, while total-Hb volume did not return to the resting state after the third set for more than 90 s. These results would suggest that a training regimen emphasizing a moderately high load and a high number of repetitions, and a serial set with short rest periods such as usually performed by body builders, caused a relatively long-term anoxic state in the muscle.
T Tamaki; S Uchiyama; T Tamura; S Nakano
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  68     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1994  
Date Detail:
Created Date:  1994-11-25     Completed Date:  1994-11-25     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  465-9     Citation Subset:  IM; S    
Department of Physiology, Tokai University School of Medicine, Kanagawa, Japan.
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MeSH Terms
Arm / blood supply
Blood Gas Analysis
Hemoglobins / metabolism*
Muscle Contraction / physiology*
Muscle, Skeletal / metabolism*
Oxygen Consumption*
Oxyhemoglobins / metabolism
Physical Exertion / physiology*
Regional Blood Flow
Spectrum Analysis
Weight Lifting*
Reg. No./Substance:
0/Hemoglobins; 0/Oxyhemoglobins; 9008-02-0/deoxyhemoglobin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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