Stress Recovery Effects of High- and Low-Frequency Amplified Music on Heart Rate Variability
Table 2
Semantic differential scales.
Semantic differential scales (mean ± SD)
Friedman test
OM
HFM
LFM
value
Loud–soft
4.23 ± 0.76
4.46 ± 0.72
4.23 ± 0.5
0.368
Beautiful–ugly
4.69 ± 0.95
5.08 ± 1.03
4.85 ± 0.95
0.301
Pure–impure
4.92 ± 0.49
4.69 ± 1.14
5.00 ± 0.37
0.629
Hard–soft
3.31 ± 1.09
3.85 ± 0.69
3.15 ± 0.95
0.097
Sharp–dull
4.15 ± 0.49
4.46 ± 0.86
3.85 ± 0.72
0.179
Strong–weak
4.85 ± 0.43
5.23 ± 0.69
4.62 ± 0.87
0.061
Deep–metallic
5.00 ± 1.21
4.77 ± 1.26
5.00 ± 0.9
0.717
Annoying–not annoying
3.08 ± 1.49
3.77 ± 1.5
3.15 ± 1.01
0.072
Mild–gruff
5.23 ± 1.26
4.77 ± 1.32
5.31 ± 1.29
0.261
Pleasant–unpleasant
5.85 ± 1.04
5.31 ± 1.66
6.00 ± 0.62
0.174
Powerful–unsatisfactory
5.08 ± 0.95
5.62 ± 1.21
5.46 ± 1.22
0.368
Pleasing–unpleasing
5.92 ± 1.19
5.54 ± 1.41
5.92 ± 0.95
0.593
Shrill–calm
4.23 ± 1.38
4.31 ± 1.26
3.77 ± 1.08
0.227
Noisy–quiet
4.46 ± 0.85
4.69 ± 0.95
4.38 ± 0.64
0.229
HFM: music with an amplified high-frequency component; LFM: music with an amplified low-frequency component; OM: original music; SD: standard deviation.
