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Table 3 Gain and time constant estimates for individual steps at the two intensity levels \(v_1\)-moderate (\(k_1\) and \(\tau _1\)) and \(v_2\)-vigorous (\(k_2\) and \(\tau _2\))

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

 

Step number

1

2

3

4

\(k_1\) [bpm/(m/s)]

33.3 ± 14.0

24.9 ± 11.2

28.6 ± 11.6

23.9 ± 11.6

\(k_2\) [bpm/(m/s)]

32.7 ± 6.9

24.0 ± 7.9

26.1 ± 6.4

21.7 ± 8.8

\(\tau _1\) (s)

61.6 ± 43.7

48.1 ± 37.0

55.0 ± 30.8

46.4 ± 30.4

\(\tau _2\) (s)

56.9 ± 24.0

60.7 ± 34.1

56.5 ± 21.5

62.6 ± 45.4

  1. The values are shown graphically in Fig. 4
  2. \(n =23\)
  3. Steps 1 and 3: up; steps 2 and 4: down
  4. Values for k and \(\tau\) are: mean \(\pm\) standard deviation