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Table 2 Outcome measures for model identification at two intensity levels: \(v_1\) (moderate) and \(v_2\) (vigorous); p values for comparison of means for k and \(\tau\)

From: Identification of heart rate dynamics during moderate-to-vigorous treadmill exercise

 

Exercise intensity

p value

\(v_1\) (moderate)

\(v_2\) (vigorous)

\(P_o\)

\(24.3/(55.7\;s + 1)\)

\(24.1/(59.5\;s + 1)\)

 

k [bpm/(m/s)]

24.3 ± 9.2, 20.7–28.0

24.1 ± 7.6, 21.1–27.1

0.88 (n.s.)

\(\tau\) (s)

55.7 ± 29.9, 43.8–67.7

59.5 ± 15.2, 53.4–65.6

0.53 (n.s.)

Fit (%)

49.6 ± 11.1

54.7 ± 14.2

 

RMSE (bpm)

2.8 ± 0.7

2.5 ± 1.1

 
  1. Values for k and \(\tau\) are: mean \(\pm\) standard deviation, 95 % confidence interval for the mean
  2. Values for fit and RMSE are: mean \(\pm\) standard deviation
  3. \(n =24\)
  4. p values are for paired two-sided t tests
  5. RMSE root-mean-square error, bpm beats per minute, n.s. not significant