Effect of the o₂ time‐averaging interval on the reproducibility of o_2max in healthy athletic subjects

Abstract

The results of this study suggests that the reproducibility of VO2max is not affected by the length of the VO2 time-average interval. However, VO2max was significantly altered by changing the VO2 time-averaging interval between 10 and 60 s. Consistency in the VO2 time-averaging interval is therefore an important methodological consideration for repeated determinations of VO2max.

Continuous and Accumulated Bouts of Cycling Matched by Intensity and Energy Expenditure Elicit Similar Acute Blood Pressure Reductions in Prehypertensive Men

“…Gas exchange data were calculated, averaged, and recorded every 30 sec, which provided a good compromise between removing noise in the data while maintaining underlying physiological trends (24). Prior to testing, gas analyzers were calibrated according to the manufacturer's instructions, using a certified standard mixture of oxygen ( Acute blood pressure responses to cycling bouts …”

Oxygen Uptake, Carbon Dioxide Production, Minute Ventilation and Heart Rate during Post Exercise Recovery in Healthy and Unmedicated Elderly and Young Men

“…Ventilatory responses were averaged and recorded every 30 s. The 30 s time average provided a good compromise between removing noise from VO 2 data while maintaining the underlying trend [31]. In all cases, the ambient temperature ranged within 21-23 °C and relative humidity within 55-70%.…”

Comparison Between Aerobic Power Parameters at Different Time- Averaging Intervals in Swimming: An Update

“…Myers et al [7] reported 20% of variability on the VO 2 values due to different chosen data sampling intervals, and that the greatest VO 2max values were systematically higher as fewer breaths were included in an average. Midgley et al [8] evidenced that short time-average intervals appear to be inadequate in reducing the noise in pulmonary VO 2 , resulting in artificially high VO 2max values. Moreover, Hill et al [9] showed higher peak VO 2 (VO 2peak ) values at different intensities when based on smaller sampling intervals.…”

“…Moreover, Hill et al [9] showed higher peak VO 2 (VO 2peak ) values at different intensities when based on smaller sampling intervals. These last referred studies [7][8][9] were conducted in laboratory conditions, not in real swimming situation.…”