| Physiology of Meditation Techniques |
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RESULTS
The group means (± SEMs) obtained in the two sessions are given in Tables 1 and 2. Oxygen consumption, breath volume
The paired t-test showed a 25.2% decrease in oxygen consumption after guided relaxation (p<.001). Breath amplitude increased by 15.0%, after guided relaxation (p<.01). Autonomic measures and breath rate
The paired t-test showed significant differences during guided relaxation compared to the respective Before values for the following parameters, (i) skin conductance level reduced by 35.6%, (p<.05); TABLE 1 Means and Standards error of the means (SEMs) of Oxygen Consumption and Breath volume before and after guided relaxation and supine rest (n = 25)
| | VARIABLES | GUIDED RELAXATION | SUPINE REST | | Pre | Post | Pre | Post | | M | SEM | M | SEM | M | SEM | M | SEM | | 1. Oxygen Consumption (ml/min ) | 768.8 | 55.1 | 574.9 † | 42.5 | 618.1 | 66.3 | 573.4 | 58.7 | | 2. Breath Volume (ml) | 906.2 | 57.0 | 1042.3* | 59.0 | 949.7 | 59.2 | 1009.9 | 64.2 | | | *p<.02, † p<.01, paired t -test, "After" compared to "Before" | | TABLE 2 | | Subjects with base line ratio of > 0.5 | Subjects with base line ratio of < 0.5 | Guided
Before | Relaxation After | Supine
Before | Rest
After | Guided
Before | Relaxation After | Supine
Before | Rest
After | | .73 | .24 | .54 | .83 | .47 | 1.27 | .41 | .44 | | .60 | .38 | .68 | .52 | .49 | .55 | .49 | .36 | | 3.17 | .54 | .77 | 1.47 | .48 | .59 | .30 | .38 | | .82 | .24 | .72 | .68 | .41 | .33 | .32 | .30 | | .76 | .47 | .59 | .26 | .44 | .42 | .46 | .43 | | .94 | .40 | .65 | .64 | .50 | .22 | .34 | .52 | | .51 | .50 | .73 | .57 | | | .50 | .32 | | .61 | .42 | .69 | .46 | | | | | | .53 | .78 | | | | | | | | |
(ii) heart rate reduced by 9.7%, (p<.001); (iii) low frequency component reduced by 15.5%, (p<.05), (iv) high frequency component increased by 9.8%, (p<.05). During supine rest compared to the preceding period significant changes occurred in: (i) skin conductance level reduced by 27.0%, (p<.01); (ii) heart rate decreased by 6.5%, (p<.01), also finger plethysmogram amplitude reduced by 25.8%, After supine rest compared to Before (p<.01). The Wilcoxon paired signed ranks test showed a significant decrease in the LF/HF ratio after guided relaxation, for subjects with baseline LF/HF >0.5 (Group I) (p<.05(1); n=9).
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