Table 3.

The Heart Rate Variability Indices Of Subjects Before And After 6-Week Combined Exercise And Diet Intervention

Parameters	Before	After	P
SDNN (ms)	65.2 ± 18.98	88.3 ± 28.36	0.013
RMSSD (ms)	65.8 ± 27.49	100.5 ± 37.68	0.008
pNN50 (%)	37.8 ± 17.05	57.8 ± 12.31	0.008
TP (ms2)	4012.0 ± 2272.3	4633.7 ± 1978.1	0.465
LF (ms2)	1172.8 ± 1189.5	1882.8 ± 2465.1	0.371
HF (ms2)	1372.5 ± 908.8	1988.0 ± 983.3	0.072
LF/HF	1.0 ± 0.55	0.7 ± 0.43	0.047

Note: Values are presented as mean ± SD.

Abbreviations: SDNN, standard deviation of normal R-R intervals; RMSSD, root mean square of successive R-R interval differences; pNN50, percentage of successive R-R intervals that differed by >50 ms; TP, total power; LF, low-frequency power; HF, high-frequency power; LF/HF, low-frequency power/high-frequency power.