Analysis of Sinus Variability in a Group of Cameroonian Athletes

Table 2

Distribution of the population according to the time analysis.

Parameters	Sedentary (n = 15)	Sportsmen
		Footballers (n = 21)	Handballers (n = 24)
RR (ms)	840.00 ± 8.83	979.90 ± 24.96^c	994.50 ± 24.91^c
Min HR (bpm)	68.30 ± 1.32	54.95 ± 1.48^c	54.73 ± 1.28^c
Max HR (bpm)	77.77 ± 1.10	77.17 ± 1.41	74.26 ± 1.91
NN50 (beats)	0.87 ± 0.34	8.19 ± 1.86^b	5.33 ± 1.01
pNN50 (%)	0.16 ± 0.06	2.99 ± 0.63^c	2.15 ± 0.38^a

Each value represents the mean ± MSE, ^a. ^b and ^c denote significant difference from sedentary. Min and Max HR: minimum and maximum registered heart rate at rest; NN₅₀: the number of pairs of successive NN (R-R) intervals that differ by more than 50 ms; pNN50: the proportion of NN50 divided by the total number of NN (R-R) intervals; RR: duration between two consecutive R waves.