Effects of Moderate Exercise on Relieving Mental Load of Elementary School Teachers
Table 3
HRV ANOVA results for age and time effects and the interaction of both effects for exercise group.
Parameters
Baseline
4th week
8th week
12th week
Interaction
YG ()
MG ()
YG ()
MG ()
YG ()
MG ()
YG ()
MG ()
TP (ms2)
10.7 ± 1.1
10.2 ± 0.9
10.9 ± 1.1
10.64 ± 0.8*
10.9 ± 0.8
10.54 ± 0.8
11.1 ± 1.0
11.22 ± 0.8***
0.295
LF (ms2)
10.0 ± 1.3
9.5 ± 1.3
10.2 ± 1.2
9.7 ± 1.1
10.2 ± 1.0
9.8 ± 1.0
10.5 ± 1.1
10.5 ± 1.0***
0.469
HF (ms2)
9.94 ± 1.2
9.3 ± 0.9†
10.13 ± 1.1
10.0 ± 0.9***
10.03 ± 0.9
9.7 ± 0.9*
10.2 ± 1.0
10.3 ± 0.9***
0.202
RRI (ms)
680.3 ± 192.9
730.4 ± 198.9
798.3 ± 117.1*
766.2 ± 186.5
769.3 ± 135.5
795.1 ± 187.2
809.8 ± 162.5*
812.1 ± 132.4*
0.665
SDNN (ms)
43.8 ± 20.6
38.6 ± 17.6
48.7 ± 28.2
48.5 ± 26.1
50.3 ± 29.9
42.8 ± 21.8
59.4 ± 28.9
59.2 ± 31.2***
0.852
RMSSD (ms)
40.6 ± 19.9
29.2 ± 13.0†
40.7 ± 18.7
43.7 ± 23.4***
41.1 ± 23.2
34.4 ± 15.74
43.1 ± 21.7
47.9 ± 23.4***
0.130
SDSD (ms)
41.0 ± 20.2
29.6 ± 13.1†
41.2 ± 19.0
44.2 ± 23.6***
41.6 ± 23.5
34.8 ± 15.91
43.6 ± 22.1
48.5 ± 23.71***
0.132
Weight (kg)
53.25 ± 10.7
55.26 ± 5.6
53.27 ± 10.1
55.11 ± 5.6
53.65 ± 10.5
55.48 ± 5.6
53.47 ± 9.8
55.44 ± 5.6
1.000
Body Fat (%)
27.68 ± 5.1
26.99 ± 6.6
26.67 ± 5.7
26.46 ± 6.5
26.73 ± 5.6
27.39 ± 6.0
27.37 ± 6.3
27.29 ± 6.4
0.992
Mean ± SD; YG: young group; MG: middle age group; TP: total power; LF: low-frequency power; HF: high-frequency power; RRI: R-R interval; SDNN: standard deviation of the normal-normal interval; RMSSD: square root of the mean of the sum of the squares of differences between adjacent normal-normal intervals; SDSD: standard deviation of differences between adjacent normal-normal intervals; < 0.05; < 0.001 by one-way ANOVA and LSD multiple comparison when comparing with baseline at the different weeks within each group. < 0.05; by one-way ANOVA with significant difference between groups at each time point.
