To assess the effects of each intervention (S or C) over the short term (three months follow up period), we will perform intra-group analysis (Visit 1, Visit 2, and Visit 3), using One way ANOVA repeated measures test (or the correspondent Friedman`s test for non-normally distributed variables). Effects of the PAEP on the main outcome (physical activity levels) will be assessed by comparing the differences (follow up - post PAEP, and post - pre PAEP) in physical activity levels between PAEP and Control by unpaired student t-test (or the correspondent Mann-Whitney test). Results will also be described as mean±SD or median [IQR], according to the normality in data distribution, analyzed by the Shapiro-Wilk test. Correlations of PADL with other variables will be assessed either by the Pearson's or Spearman's coefficients depending on the distribution of the variables. The level of significance for all comparisons will be set at p<0.05. Data will be analyzed using the statistical package SAS version 9.3 (SAS Institute Inc, Cary, NC, USA).