II.1. Average power (P ave)
The analysis of the variance does not show any significant
effect of the fast of Ramadan on the average power expressed in Watts.
Similarly, the relative average powers (W / Kg) relative to weight do not show
any significant difference between the three periods even though the values
have slightly decreased during these periods.
P ave (Watt)
450
400
600
550
500
350
300
250
200
BR
A R M R
R2 R3
F R
36
Figure 1: Average (#177; SD) of mean powers (W) of the Wingate
test recorded during the
second, fourth week and before Ramadan (n = 9).
II.2 Peak power (Ppic)
Variance analysis does not show a significant effect of
Ramadan fasting on Peak power expressed in Watts. Likewise, the relative peak
powers (W / Kg) show no significant difference between the different
measurement periods (BR, R1 and R2).
P.pic (Watt)
400
700
600
500
300
200
A R M R
R2 R3
F R
BR
Figure 2: Average (#177; SD) of the Peak (W) Wingate ratings
recorded during the second, fourth
week and before Ramadan (n = 9).
37
III. Effect of fasting Ramadan on the autonomic nervous
system
The parameters calculated from the cardiac variability analysis
during the second week, the fourth week and before Ramadan are presented in the
following tables:
Table IV: Mean (#177; SD) of the
analysis parameters of cardiac variability analysis in supine position
B R R 1 R 2
|
R R
|
1001 #177; 105
|
1054 #177; 83*
|
1081 #177; 89*
|
|
RMSSD
|
72, 88 #177; 21, 86
|
81, 91 #177; 14, 58*
|
90, 16 #177; 15, 55*
|
|
PNN50
|
39, 42 #177; 17, 18
|
45, 67 #177; 9, 62*
|
47, 25 #177; 11, 26*
|
|
L F (ms2)
|
324 #177; 126
|
304 #177; 101*
|
298 #177; 112*
|
|
H F (ms2)
|
1011 #177; 572
|
1082#177;659*
|
1181 #177; 623*
|
|
L F (nu)
|
38, 77 #177; 24, 12
|
31, 56 #177; 22, 3*
|
29, 44 #177; 20, 4*
|
|
H F (nu)
|
57, 39 #177; 20, 4
|
69, 33 #177; 32, 3*
|
75, 66 #177; 29, 12*
|
|
LF/HF
|
1, 69 #177; 0, 90
|
1, 37 #177; 0, 69 *
|
1, 24 #177; 0, 70*
|
RR, Time intervals between two successive RR peaks; RMSSD,
square root of squared differences of successive RR intervals: PNN50 percentage
of differences in successive RR intervals greater than 50 ms; LF, Power in the
low frequencies; HF, power in high frequencies; LF / HF, sympathovagal balance,
recorded during the second, fourth week and before Ramadan (n = 9). ** (p
<0.01), * (p <0.05): Significant difference from before Ramadan.
££ (p <0.01), £ (p <0.05): Significant difference between
the second and fourth week of Ramadan.
Table V: Mean (#177; SD) of the
analysis parameters of cardiac variability in standing position.
|
B R
|
R 1
|
R 2
|
|
R R
|
822 #177;93
|
872#177;77 a
|
883#177;82 a
|
|
RMSSD
|
31,93#177;13,96
|
39,37 #177;7,43 a
|
41,94#177;9,38 a
|
|
PNN50
|
7,01#177;5,15
|
12,75 #177;3,24 a
|
14,52#177;4,80 a
|
|
L F (ms2)
|
376 #177; 111
|
333 #177;93 a
|
321 #177;88 a
|
|
H F (ms2)
|
239#177; 144
|
276 #177;155 a
|
298#177;84 a
|
|
L F (nu)
|
69,33#177; 21,2
|
62,3 #177;19,2 a
|
59,88 #177;17,7 a
|
|
H F (nu)
|
32,11#177; 21,2
|
44,12 #177;22,2 a
|
51,22 #177;21,7 a
|
|
LF/HF
|
2,93#177;0,93
|
2,65 #177;0,89 a
|
2,31#177;0,93 a
|
RR, Time intervals between two successive RR peaks; RMSSD,
square root of squared differences of successive RR intervals: PNN50 percentage
of differences in successive RR intervals greater than 50 ms; LF, Power in the
low frequencies; HF, power in high frequencies; LF / HF, sympathovagal balance,
recorded during the second, fourth week and before Ramadan (n = 9). aa (p
<0.01), a (p <0.05): Significant difference from before Ramadan;
££ (p <0.01), £ (p <0.05): Significant difference between
the second and fourth week of Ramadan.
38
Table VI: Mean (#177; SD) of the
analysis parameters of the cardiac variability during the effort.
B R R 1 R 2
|
R R
|
491 #177; 99
|
521 #177; 71 b
|
533 #177; 68 b
|
|
RMSSD
|
9,77 #177; 3,96
|
16,57 #177; 2,91 bb
|
18,21 #177; 2,92 bb
|
|
PNN50
|
0 #177; 0
|
0 #177; 0,1
|
0 #177; 0
|
|
LF (ms2)
|
25 #177; 18
|
19 #177; 9 b
|
17 #177; 13 b
|
|
HF (ms2)
|
7 #177; 2
|
9 #177; 3
|
9 #177; 2
|
|
L F (nu)
|
79,33 #177; 12,33
|
69,22 #177; 12,44 b
|
66,33 #177; 13,55 b
|
|
H F (nu)
|
21,33 #177; 12,33
|
28,64 #177; 12,44 b
|
31,42 #177; 13,55 b
|
|
LF/HF
|
5,59 #177; 3,95
|
5,01#177; 3,81 b
|
4,91 #177; 2,79 b
|
RR, Time interval between two successive RR peaks; RMSSD,
square root of squared differences of successive RR intervals: PNN50 percentage
of differences in successive RR intervals greater than 50 ms; LF, Power in the
low frequencies; HF, power in high frequencies; LF / HF, sympathovagal balance;
recorded during the second, fourth week and before Ramadan (n = 9). bb (p
<0.01), b (p <0.05): Significant difference from before Ramadan;
££ (p <0.01), £ (p <0.05): Significant difference between
the second and fourth week of the month of Ramadan
39
|
|
