Ventilatory sounds as an index of exercise intensity
Abstract (Summary)Ventilatory Sounds as an Index of Exerciçe Intensity Master of Science 1998 Robert Winston Mertens Graduate Department of Community Health University of Toronto Young male subjects were randomly divided into 2 groups to determine the relationships between the phrases "can hear their breathing " (n=8) / "cm readily hear their breathing" (n=9)and exercise intensity. Peak heart rate (HR peak) and the first ventilatory threshold (VTI) were determined from a maximal cycle ergometry test using a SensorMedics 2900 metabolic cari. On 3 separate occasions, subjects' breathing frequency (BF) and HR were recorded using a strain gauge and electrocardiograph (ECG) respectively while pedalling a cycle ergorneter against an increasing resistance of 150 kpm (25 watts) per minute until they could "cm hear their breathing" or "can readily hear their breathing " . The 2 phrases are not significantly different (p<0.05). The exercise intensity chosen by the subjects cyding at a Pace corresponding to " cm hear their breathing " or "can readily hear their breathing " corresponds to their VTI (~~0.05) and 70% of HR peak which is within the recommended range (ACSM 55% to 90% of HR max).
Source Type:Master's Thesis
Date of Publication:01/01/1998