Effects of Moderate Exercise on Relieving Mental Load of Elementary School Teachers
Table 2
HRV ANOVA results for exercise and time effects and the interaction of both effects.
Parameters
Baseline
4th week
8th week
12th week
Interaction
EG ()
CG ()
EG ()
CG ()
EG ()
CG ()
EG ()
CG ()
TP (ms2)
10.36 ± 1.01
10. 4 ± 1.1
10.72 ± 0.9*
10.2 ± 0.9‡
10.6 ± 0.8
10.2 ± 0.8‡
11.2 ± 0.8***
9.8 ± 0.8
0.002**
LF (ms2)
9.62 ± 1.2
9.7 ± 1.1
9.82 ± 1.2
9.54 ± 1.1
9.9 ± 1.0
9.6 ± 0.9
10.5 ± 1.0***
9.2 ± 1.0
0.002**
HF (ms2)
9.46 ± 1.1
9.5 ± 1.2
10.02 ± 1.0**
9.2 ± 1.1
9.8 ± 0.9
9.2 ± 1.0
10.3 ± 0.9***
8.8 ± 1.0
0.011*
RRI (ms)
715.4 ± 196.8
689.1 ± 139.5
775.8 ± 168.4
718.0 ± 137.9†
787.3 ± 172.6*
746.4 ± 81.5*
811.4 ± 140.7**
709.1 ± 130.3
0.686
SDNN (ms)
40.2 ± 18.5
37.4 ± 15.4
48.5 ± 26.5
34.2 ± 13.4
45.1 ± 24.5
33.4 ± 11.7‡
59.3 ± 30.3***
29.4 ± 10.4
0.008**
RMSSD (ms)
32.6 ± 16.1
32.5 ± 18.9
42.8 ± 21.9**
27.4 ± 13.7
36.4 ± 18.4
26.5 ± 12.8
46.4 ± 22.8***
22.2 ± 10.5
0.013*
SDSD (ms)
33.0 ± 16.3
33.0 ± 16.3
43.3 ± 22.2**
27.69 ± 13.8
36.9 ± 18.6
26.77 ± 13.0
47.0 ± 23.2***
22.44 ± 10.6
0.012*
Weight (kg)
54.7 ± 7.2
60.5 ± 11.0
54.6 ± 7.0
60.64 ± 11.09
54.9 ± 7.2
60.67 ± 11.08
54.9 ± 6.9
60.49 ± 10.99
1.000
Body Fat (%)
27.2 ± 6.1
29.1 ± 6.2
26.5 ± 6.1
29.0 ± 6.7
27.2 ± 5.8
30.9 ± 11.1
27.3 ± 6.2
29.2 ± 6.8
0.927
Mean ± SD; CG: nonexercise group; EG: exercise 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; < 0.01; < 0.001 by one-way ANOVA and LSD multiple comparison when comparing with baseline at the different weeks within each group. < 0.05; < 0.01; < 0.001 by one-way ANOVA with significant difference between groups at each time point.
