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On issues of confidence in determining the time constant for oxygen uptake kinetics
MARKOVITZ GH; SAYRE JW; STORER TW
BR J SPORTS MED , 2004, vol. 38, n° 5, p. 553-560 Doc n°: 116397 Localisation : Documentation IRR Descripteurs : DD32 - EXPLORATION EXAMENS BILANS - EPAULE, NC - MEDECINE DU SPORT Tau(V) over dot O-2 at the onset of constant work rate (CWR) exercise is a variable of aerobic fitness that shortens with physical training and lengthens with cardiopulmonary disease. Determination of tau(V) over dot O-2 with sufficiently high confidence has typically required multiple exercise transitions limiting its clinical application. Objectives: To design a protocol to determine tau(V) over dot O-2 reliably but simply. Methods: On each of three days, five healthy men performed two CWR tests on a cycle ergometer below the metabolic threshold ((V) over dot O(2)theta) for blood lactate accumulation as determined by gas exchange measurements followed by an incremental work rate (IWR) test. Tau(V) over dot O-2 was determined (a) from the on-transit (on-tau(V) over dot Langue : ANGLAIS Tiré à part : OUI |
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