Blood lactate response to the Canadian Aerobic Fitness Test in females.
This study evaluated the blood lactate concentration ([LA-]) response to the Canadian Aerobic Fitness Test (CAFT) in female subjects and compared the strength of prediction of VO2max determined by [LA-] and heart rate (HR). The sample was composed of 98 Canadian Forces females between the ages of 18 and 45 years. The [LA-] after each stage of the step-test was measured in all subjects by sampling blood from the fingertip. VO2max was measured directly during a maximal treadmill run in 66 of these subjects. The results showed that increasing stages of the step-test were associated with increasing [LA-]. The correlation between [LA-] after Stage 5 of the step-test and the directly determined VO2max was r = -0.72 and did not differ significantly from the correlation between HR and VO2max (r = -0.66). The relationship between [LA-] and VO2max for these females was similar to the one established earlier for males; however, the correlation between HR and VO2max for females was different from that observed in males. The present data for the females suggest that [LA-] and HR after Stage 5 of the CAFT predict VO2max equally well for females under age 40.
Bell
D G
DG
Defence and Civil Institute of Environmental Medicine, North York, Ontario.
Jacobs
I
I
D000328:Adult; D000367:Age Factors; D000818:Animals; D002170:Canada; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006339:Heart Rate; D006801:Humans; D007773:Lactates / Q000097:blood*; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology; D010809:Physical Fitness / Q000502:physiology*
D007773:Lactates