Flow chart of the study recruitment of the participants Flow chart of the study recruitment of the participants. 6-MWT, 6-min walk test; BMI, body mass index; HR, heart rate; PAR Q+, Physical Activity Readiness Questionnaire; RPE, ratings of perceived exertion. Flow chart of the study recruitment of the participants. 6-MWT, 6-min walk test; BMI, body mass index; HR, heart rate; PAR Q+, Physical Activity Readiness Questionnaire; RPE, ratings of perceived exertion. Adamu Ahmad Rufa'i et al. BMJ Glob Health 2016;1:e000015 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/