Abstract
AimsThe purpose of this study was to evaluate the agreement between heart rate (HR) and treadmill velocity corresponding to the anaerobic threshold measured by second ventilatory threshold (VT2) and the HR deflection point (HRDP) in patients with type 2 diabetes. Materials and methodsThirty-two sedentary patients (56.1±7.7 years) were evaluated. To determine the threshold values, patients performed an incremental treadmill test, with an initial velocity of 3kmh−1 for 3min, which was then increased by 1kmh−1 every 2min. The degree of agreement between VT2 and HRDP was analyzed using the Bland–Altman test. ResultsPatients had a HR of 133±16bpm at VT2 and 133±18bpm at HRDP. Mean velocity corresponding to VT2 was 6.3±0.7kmh−1, and that corresponding to HRDP was 6.4±1.1kmh−1. There were no significant differences between the methods evaluated (HR: p=0.78; mean velocity: p=0.57). ConclusionsThe present investigation concludes that there is an agreement between VT2 and HRDP methods for HR and treadmill velocity, and thus, either method may be used for these patients.
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