Effects of interval exercise training programme on the indices of adiposity and biomarker of inflammation in hypertension: A randomised controlled trial

Abstract

Hypertension remains a significant risk factor in cardiovascular morbidity and mortality. The purpose of the present study was to investigate the effects of 8 weeks interval training programme on blood pressure, aerobic capacity (VO max), indices of adiposity and marker of inflammation in black African men with essential hypertension. Two hundred and forty five (245) male subjects with stage 1 and 2 (systolic blood pressure [SBP] between 140-179 & diastolic blood pressure [DBP] between 90-109 mmHg) essential hypertension were age matched and grouped into experimental and control groups. The experimental (n=140; 58.90 ± 7.35 years) group involved in an 8 weeks interval training (60-79% HRmax) programme of between 45 and 60 minutes, while age-matched control hypertensive (n=105; 58.27±6.24 years) group remain sedentary during this period. All subjects in both groups were on antihypertensive drugs throughout the study period. Cardiovascular parameters (SBP, DBP) & VO max and percent body fat [%BF], waist to hip ratio [WHR] and C-reactive protein [CRP] were assessed. Independent t-test and Pearson correlation test were used in data analysis. Findings of the study revealed significant decreased effects of interval training programme on SBP, DBP, %BF, WHR and CRP and significant increased effect on VO max at p< 0.05. Also, changes in CRP as a result of exercise training significantly and positively correlated with changes in SBP, DBP, %BF, WHR, CRP and negatively correlated with VO max at p< 0.05.