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Table 2 Mean (± SD) of workload, blood lactate, heart rate and the rate of perceived exertion corresponding to the lactate (LT), ventilatory (VT) and heart rate variability thresholds (HRVT-RMSSD and HRVT-SD1).

From: Noninvasive method to estimate anaerobic threshold in individuals with type 2 diabetes

  Parameter Worload (W) VO2 (mL.kg.-1min-1) [LAC] (mmol.L-1) HR (bpm) RPE (score)
T2D LT 55.0 ± 26.0 13.0 ± 1.2 2.9 ± 0.6 126.4 ± 14.1 13.0 ± 2.1
  LV 58.3 ± 23.0 13.3 ± 1.8 3.0 ± 1.0 128.8 ± 14.4 13.2 ± 2.0
  HRVT-RMSSD 58.3 ± 17.5 13.3 ± 1.1 3.0 ± 0.7 128.2 ± 8.9 13.6 ± 1.4
  HRVT-SD1 50.0 ± 15.0 13.0 ± 2.1 2.8 ± 0.9 123.2 ± 6.9 12.9 ± 1.8
  Exhaustion 96.7 ± 33.6‡ 20.6 ± 4.6‡ 6.5 ± 2.5‡ 159.7 ± 20.8‡ 18.4 ± 1.6‡
ND LT 85.5 ± 33.2* 19.2 ± 5.9* 3.6 ± 0.6* 139.3 ± 17.4 14.3 ± 1.4
  LV 91.5 ± 28.7* 20.3 ± 5.6* 4.1 ± 1.1* 143.1 ± 16.2 14.6 ± 1.2
  HRVT-RMSSD 85.5 ± 34.7* 19.0 ± 5.3* 3.5 ± 0.7 137.7 ± 13.1 13.9 ± 1.2
  HRVT-SD1 82.5 ± 34.1* 18.6 ± 5.3* 3.2 ± 0.7 131.2 ± 13.8 13.7 ± 1.2
  Exhaustion 135.0 ± 45.3‡ 29.4 ± 6.8‡ 7,7 ± 2.0‡ 173.6 ± 9.3‡ 18.8 ± 1.3‡
  1. Exhaustion in T2D (n = 9) and ND (n = 10).
  2. T2D = individuals with type 2 diabetes; ND = individuals without type-2 diabetes; *p < 0.05 in relation to corresponding results for T2D; ‡ p < 0.05 in relation to the thresholds (LT, TV, HRVT RMSSD and HRVT-SD1). No differences were observed within groups for the methods to identify anaerobic threshold intensities.