III.2. Effect of Ramadan fasting on the
parasympathetic system III.2.1. RMSSD (ms)
RMSSD (ms)
120
100
40
80
60
20
0
*
a
bb
a
bb
Figure 5: Mean (#177; SD) RMSSD(ms) values
recorded during the second, fourth week and before Ramadan (n =
9).
* (p <0.05) Significant difference compared to before Ramadan
(supine position);
a (p <0.05) Significant difference compared to before Ramadan
(standing position);
bb (p <0.05) Significant difference compared to before
Ramadan (During effort).
· Supine position: the Analysis of the variance
shows a significant effect F(2) = 11,52; P <0.05 Ramadan fasting on mean
values RMSSD (ms) (Figure 5).
42
The post hoc analysis shows that RMSSD values recorded before
Ramadan are significantly lower than those measured in the middle and end of
Ramadan (p <0.05).
· Standing position :The analysis of the variance
shows a significant effect F (2) = 11.88;(p <0.05) of Ramadan fasting on
mean values RMSSD recorded(ms) (Figure 5).
Post hoc analysis shows that standing RMSSD values before
Ramadan are significantly lower than those measured in the middle and at the
end of Ramadan (p<0, 05).
· During effort: The analysis of the variance
shows a significant effect F (2) = 16,62; (p <0.01) of Ramadan fasting on
mean RMSSD values recorded during effort (Figure 5).
The post hoc analysis shows that the RMSSD values recorded
during the effort, before Ramadan, are significantly lower than those measured
in the middle and at the end of the month of Ramadan (p <0.01).
III.2.2. PNN50 (%)
70
*
60
50
PNN50 (%)
40
30
a
20
10
0
*
a
Figure 6: Mean (#177; SD) of PNN50 (%)
recorded during the second, fourth week and before Ramadan (n
= 9).
* (p
<0.05) Significant difference compared to before Ramadan (supine
position);
a (p <0.05) Significant difference compared to before Ramadan
(standing position).
· Supine position: The analysis of the variance
shows a significant effect F (2) = 10.89 (p <0.05) of Ramadan fasting on
mean values PNN50, expressed in% (Figure 6).
43
Post hoc analysis shows that PNN50 percentages in supine position
before Ramadan are significantly lower than those measured in the middle and
end of Ramadan (p <0.05).
· Standing position: The analysis of the variance
shows a significant effect F (2) = 9.84 (p <0.05) of Ramadan fasting on the
values PNN50, expressed in% (Figure 6).
The post hoc analysis shows that the PNN50 percentages recorded,
while standing, before Ramadan are significantly lower than those measured in
the middle and at the end of the month of Ramadan (p <0.05).
· During effort: the analysis of the variance does
not show a significant effect of of Ramadan fasting on the PNN50 expressed in%
(Figure 6).
III.2.3. HF (ms2)
Supine Standing Effort
10
1600
1400
1200
1000
800
600
HF (ms2)
a
a
400
200
0
Figure 7: Mean (#177; SD) of the HF (ms2) values
recorded during the second, fourth week and before
Ramadan (n = 9).
* (p <0.05) Significant difference compared to before
Ramadan (supine position);
a (p <0.05) Significant difference compared to
before Ramadan (standing position).
· Supine position: The analysis of variance shows a
significant effect F (2) = 9.67 (p <0.05) of Ramadan fasting on mean HF
(ms2) values (Figure 7).
44
The post hoc analysis shows that the HF (ms2)
values recorded before Ramadan are significantly lower than those measured in
the middle and at the end of the month of Ramadan p <0.05.
· Standing position: Variance analysis shows a
significant effect F (2) = 10.22; (p <0.05) of Ramadan fasting on the
average values HF (ms2) (Figure 7).
The post hoc analysis shows that the HF values recorded
before Ramadan, while standing, are significantly higher than those measured in
the middle and at the end of the month of Ramadan P <0.05.
· During the effort: Variance analysis does not
show a significant effect of Ramadan fasting on mean LF values during exercise
(Figure 7).
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