Relationship between the talk test and ventilatory threshold in cardiac patients

[摘要] The Talk Test (TT) is a subjective method of prescribing exercise intensity. Previousstudies have demonstrated that TT relates to the ventilatory threshold (VT) and can beused to prescribe intensity levels in healthy individuals. This study extends evaluation ofTT to patients with stable cardiovascular disease. Each subject (N = 10) completed twomaximal exercise tests. One test used gas analysis to determine VT. The second test wasidentical but in this one TT was administered. Outcomes at VT versus TT werecompared. There was a significant difference in V& and HR between VT and thenegative stage of TT @ < 0.05). There was a good correlation for VOz at VT and allstages of ;;IT. We conclude that when subjects were at the last positive or equivocal stageof TT that they were either at or below their VT. When subjects were at the negativestage of TT, they were above their VT and above an appropriate exercise intensity. Thus,TT appears to be a valid subjective measure of exercise intensity to guide exerciseprescription in patients with clinically stable cardiovascular disease.

[发布机构] University of Wisconsin

[效力级别] Anaerobiosis

[关键词] Heart - Diseases - Patients - Rehabilitation;Anaerobiosis;Respiration - Measurement;Treadmill exercise tests - Physiological aspects