Differences in the oxygenation of the forearm muscle during isometric contraction in trained and untrained subjects

• Autorzy: Usaj A
• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to test a hypothesis that a longer duration of isometric contraction is related to an increased oxygenation status of the muscle. A group of trained rock climbers and untrained subjects performed 15 kp sustained isometric contraction until fatigue set in. The oxygenation status was assessed using near infrared spectroscopy (ISS, USA). The results support the hypothesis. The concentration of relative oxygenated hemoglobin was higher in the rock climbers than in the untrained subjects. The relative total hemoglobin did not differentiate the two groups enough to show that blood volume also strongly influences contraction time.

Słowa kluczowe

EN

muscle; forearm muscle; isometric contraction; oxygenation; endurance; biodynamics

• Wydawca: -
• Czasopismo: Cellular and Molecular Biology Letters
• Rocznik: 2002
• Tom: 07
• Numer: 2
• Opis fizyczny: p.375-377,fig.

Twórcy

autor

Usaj A

• University of Ljubljana, Ljubljana, Slovenia

Bibliografia

• 1. Usaj, A. The endurance training effect on the oxygenation status of an isometrically contracted forearm muscle. Pflugers Archiv. 442 (2001) R155-R156 (Suppl. 1).
• 2. Sjogaard, G., Savard, G. and Carsten, J. Muscle blood flow during isometric activity and its relation to muscle fatigue. Europ. J. Appl. Physiol. 57 (1988) 327-335.