Heart rate response to industrial work at different outdoor temperatures with or without temperature control system at the plant

Some 6,016 employees in 21 Israeli industrial plants were studied to examine the association between indoor temperature control (TC) at the workplace and working heart rates (HR) of industrial workers. The resting HR, working HR, workload, age and health-related habits of the subjects were collected, as well as the outdoor temperatures and the TC status of the plants. Although no significant difference was noted in the mean working HR of subjects working with TC and those without TC in the outdoor temperature range, the study suggests that indoor temperature control in plants moderates the cardiovascular strain in working subjects during cold and hot days.