Table 4 Linear regression between anthropometric variables and HRV indices in G2.

From: Waist-Stature Ratio And Its Relationship With Autonomic Recovery From Aerobic Exercise In Healthy Men

Models

β

95% C.I.

p

R2-adjusted

1- BMI

rMSSD (Rec 4)

−2.893

−5.693; −0.092

0.04

0.15

rMSSD (Rec 5)

−3.214

−6.019; −0.4086

0.026

0.18

rMSSD (Rec 6)

−4.007

−6.728; −1.286

0.0057

0.27

HF (Rec 6)

−103.47

38.298; −182.51

0.0125

0.23

SD1 (Rec 4)

−2.054

0.9610; −4.037

0.04

0.159

SD1 (Rec 5)

−2.277

0.9612; −4.261

0.026

0.189

SD1 (Rec 6)

−2.844

0.9339; −4.771

0.0056

0.2787

2- WC

rMSSD (Rec 1)

−87.636

41.663; −173.63

0.04

0.155

HF (Rec 1)

−1960.4

879.80; −3776.3

0.0355

0.171

SD1 (Rec 1)

−62.025

29.533; −122.9

0.0464

0.155

3- WSR

rMSSD (Rec 6)

−359.14

144.82; −658.06

0.0206

0.204

SD1 (Rec 6)

0.2036

102.66; −466.18

0.0207

0.2036

  1. BMI: body mass index; WC: waist circumference; WSR: waist-stature ratio; rMSSD: square root of the square mean of the differences between adjacent normal RR intervals; SD1: standard deviation of instantaneous beat-to-beat variability; HF: high frequency; r-adjusted: coefficient of determination of the percentage of variation; β: Beta; C.I.: confidence interval; G2: group with WSR between 0.45 and 0.49.
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