HEART RATE VARIABILITY OF OBESE AND NON-OBESE FILIPINO ADOLESCENTS

The purpose of this research was to compare the differences in heart rate variability (HRV) parameters between obese and non-obese individuals from spontaneous breathing (SB) and paced breathing (PB). Totally 20 subjects, healthy male adolescents participated in the study: 10 obese (age: 17.1 + or - 0.74 yrs; height: 173.5 + or - 4.94 cm; weight: 103.9 + or - 16.4 kg; %BF =29.0 + or - 5.68; waist circumference (WC): 102.8 + or - 7.8 cm; systolic blood pressure (SBP): 119.2 + or - 5.9 mmHg; diastolic blood pressure (DBP): 74.6 + or - 6.7; physical activity level: 36.9 + or - 9.48) and 10 non-obese (age:16.5 + or - 0.71 yrs; height: 166.7 + or - 5.33 cm; weight: 55.1 + or - 106 kg; %BF:10.5 + or - 5.22; SBP: 100.0 + or - 11.5 mmHg; WC: 68.3 + or - 6.4; DBP: 62.6 + or - 6.6; physical activity level: 41.1 + or - 14.8) They underwent two 5-minute heart rate recordings for SB and metronome guided PB respectively. PB was adjusted from the respiratory rate during SB. Results from twoway repeated measures ANOVA revealed non-significant differences in the standard deviation of N-N intervals (SDNN), low frequency (LF), peak LF (LFpeak), relative contribution of LF (%LF), LF normalized unit (LFnu), high frequency (HF), peak HF (HFpeak), relative contribution of HF (%HF), HF normalized unit (HFnu), total power (TP), LF to HF ratio (LF/HF), instantaneous beat to beat variability (SD1), continuous beat to beat variability (SD2), and SD1 to SD2 ratio (SD1/SD2). In conclusion, metronome guided PB adjusted from SB rate did not produce any significant difference in time, frequency and non-linear domains of HRV between asymptomatic obese and non-obese adolescents.Original Abstract: Svrha ovog istrazivanja bila je usporedba razlika u parametrima varijabiliteta srcanog ritma (HRV) izmeau gojaznih i negojaznih pojedinaca od spontanog disanja (SB) do pojacanog disanja (PB). Ukupno 20 zdravih mladih ispitanika adolscenata je sudjelovalo u studiji: 10 gojaznih (uzrast: 17.1 + or - 0.74 god.; visina: 173.5 + or - 4.94 cm; tezina: 103.9 + or - 16.4 kg; %BF =29.0 + or - 5.68; opseg grudnog kosa (WC): 102.8 + or - 7.8 cm; sistolicki krvni tlak (SBP): 119.2 + or - 5.9 mmHg; dijastolicki krvni tlak (DBP): 74.6 + or - 6.7; razina tjelesne aktivnosti: 36.9 + or - 9.48) i 10 negojaznih (uzrast:16.5 + or - 0.71 god.; visina: 166.7 + or - 5.33 cm; tezina: 55.1 + or - 106 kg; %BF:10.5 + or - 5.22; SBP: 100.0 + or - 11.5 mmHg; WC: 68.3 + or - 6.4; DBP: 62.6 + or - 6.6; razina tjelesne aktivnost