Predicting the Amount and Direction of Blood Pressure Change after Aerobic Training and Detraining in Sedentary Midlife Men

Considering the likelihood of uncommon blood pressure adaptations with exercise training and detraining observed in some individual، it seems the standard exercise prescriptions needs to be reconsidered. Therefore، the prediction of the future blood pressure responses to exercise and detraining is warranted. 70 sedentary volunteer midlife men with mild hypertension randomized were divided into experimental (Ex) and control groups. The Ex subjects participated in aerobic training (walking/running) program (24 sessions (3/wk) at 60 to 70% of maximum heart rate،MHR) 40 min per session; followed by 2 weeks of detraining. The data were analyzed using pearson correlation and chi-square goodness of fit، kappa، paired samples t and ANOVA tests. The direction of mean atrial pressure (MAP) changes in adaptation with both training and detraining periods were not similar in the Ex subjects so that some have experienced good response (GR)، some have no response (NR) and some other even experienced bad response (BR). Although all of the metabolic risks values had significant differences during the study، however; only a significant change was observed in Zmets value (P<0. 05) in the GR subjects. Moreover، both GR and BR subjects had more metabolic risk counts and also upper Zmets at baseline. The baseline MAP، age، BMI، plasma HDL and LDL were recognized as the predictors of MAP changes in adaptation with training. All metabolic risk factors are important in predicting the direction of MAP response to training، however; participation in aerobic exercise would not possibly leads to bad responding in those with high metabolic risk factors. However، more research remains to be done because of a little body of evidence is available.