Accuracy of exercise prescription methods compared to the ventilatory threshold

[摘要] Many exercise professionals use non-invasive methods to determine exerciseprescription. These methods have the risk of prescribing exercise intensities that arebelow and above the ventilatory threshold (VT). This study compared the ACSMrecommended exercise prescription percentages to variables (HR, V02) at VT. Twentyhealthy volunteers (n = 20) performed a maximal exercise test to determine VT, peakV02, HRmax. The variables at VT were compared to the percentages (40,60,80%V02peak, 55,70,90% peak HR, and 40,85% HRR) that were widely used to prescribeexercise. There was a statistically significant difference (p < .05) between the variablesat VT and numerous recommended percentages; however, there were no significantcorrelations between the percentages and variables at VT. The authors concluded thatintensities of 60% VOzpeak, and 75% HRrnax were associated with intensities that areequivalent to the VT.

[发布机构] University of Wisconsin

[效力级别] Respiration

[关键词] Exercise - Physiological aspects;Respiration;Anaerobiosis;Treadmill exercise tests - Physiological aspects