Forearm muscle oxygenation during sustained isometric contractions in rock climbers

Title Page Forearm oxygenation and blood flow kinetics during a sustained contraction in multiple ability groups of rock climbers Running head: Haemodynamic kinetics in elite rock climbers

Blood flow and muscle oxygenation during low, moderate, and maximal sustained isometric contractions.

A reduction of blood flow to active muscle will precipitate fatigue, and sustained isometric contractions produce intramuscular and compartmental pressures that can limit flow. The present study explored how blood flow and muscle oxygenation respond to isometric contractions at low, moderate, and maximal intensities. Over two visits, 10 males (26 ± 2 yr; means ± SD) performed 1-min dorsiflexion...

Blood flow and muscle oxygenation during low , moderate and 1 maximal sustained isometric contractions

34 A reduction of blood flow to active muscle will precipitate fatigue and sustained isometric 35 contractions produce intramuscular and compartmental pressures which can limit flow. The 36 present study explored how blood flow and muscle oxygenation respond to isometric 37 contractions at low, moderate and maximal intensities. Over two visits, 10 males (26±2 years; 38 mean±SD) performed 1min d...

Forearm blood flow during and after isometric hand-grip contractions.

1. A method is described for the measurement of forearm blood flow during sustained voluntary isometric hand-grip contractions that can be maintained constant by the subject’s monitoring of the strength of his contractions. 2. In most subjects it was found that contractions of 5% of their maximal voluntary force could be maintained without fatigue, and without any post-exercise increase in bloo...

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

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...