Does Ramadan fasting affect the physical workload?

Aim: To quantify the physical workload during the Ramadan 2015 (summer season) and to verify if this load changes significantly compared with periods of non-fasting (in summer or winter seasons).

Methods: It was an18-month prospective cohort study conducted in a brickyard and a textile manufacturing company located in the governorate of Monastir (Tunisia). It was based on the results of three visits: The first one (V1) was carried out in the month of Ramadan in the hot season, the second visit (V2) took place in the hot season outside of Ramadan and the third one (V3) was in the cold season outside of Ramadan.