Table 3 Mean values of 5-minute resting periods pre- and post-exercise (two-way ANOVA with post hoc test; n = 13).

From: Heart rate variability response of intensity-matched strength training dependent on body position in females: a pilot randomized crossover study

 

SM

50% 3-RM

LP

50% 3-RM

 

Effect size for interaction effects

Main effects (group, time, interaction)

HRV metrics

  

p-value/post hoc-test

η²p

group

F value; p value

time

F value; p value

interaction

F value; p value

RRI in ms

Pre-exercise

Post-ex. b/w sets

Post-exercise

662.70 ± 69.02

620.80 ± 69.21

604.50 ± 63.73

791.00 ± 72.03

771.90 ± 55.87

775.90 ± 50.05

< 0.001

< 0.001

< 0.001

0.382

F = 82.61;

p < .001

F = 16.43;

p < .001

F = 8.52;

p = .003

RMSSD in ms

Pre-exercise

Post-ex. b/w sets

Post-exercise

22.30 ± 9.82

23.80 ± 10.19

17.32 ± 6.08

68.09 ± 39.30

60.06 ± 33.58

57.40 ± 32.75

< 0.001

< 0.001

< 0.001

0.060

F = 21.25;

p < .001

F = 2.02;

p = .155

F = 0.76;

p = .478

DFAa1

Pre-exercise

Post-ex. b/w sets

Post-exercise

1.42 ± 0.18

1.30 ± 0.20

1.40 ± 0.27

0.87 ± 0.25

0.88 ± 0.21

0.90 ± 0.19

< 0.001

< 0.001

< 0.001

0.139

F = 78.67;

p < .001

F = 1.41;

p = .263

F = 1.94;

p = .166

LF/HF

Pre-exercise

Post-ex. b/w sets

Post-exercise

5.65 ± 4.78

3.11 ± 1.89

3.35 ± 2.57

0.97 ± 0.60

0.94 ± 0.62

0.90 ± 0.62

< 0.001

0.024

0.001

0.222

F = 20.03;

p < .001

F = 3.44;

p = .049

F = 3.43;

p = .049

  1. The values are presented as the means and standard deviations, F = Effect size according to Cohen’s two-way repeated-measures ANOVA; η²p = partial eta square for interaction effect; Post-ex. b/w sets = post-exercise between sets, RRI = RR intervals, RMSSD = Root-Mean-Square-of-Successive-Differences, DFAa1: short-term scaling exponent alpha1 of Detrended Fluctuation Analysis, LF/HF = ratio of low frequency and high frequencies.
  2. Significant values are in bold.