Evaluation of work-rest schedules during operation of a rotary power tiller

Activity–rest schedules in physically demanding work and the variation of responses with age

“…These divergences between physical and subjective workload indicators are in line with the findings of Tiwari and Gite (2006). In their field experiment with power tiller operators, they demonstrated that although shorter work bouts involved lower cardiac costs, they evoked an even greater feeling of physical fatigue.…”

“…Boucsein and Thum (1997) showed that recovery from mental and emotional strain in patent examiners was promoted by a number of short breaks until the late afternoon, at which point one long break was more effective in reducing fatigue and emotional strain. Thus, beyond the above-mentioned assumption that the appropriate activity-break schedule depends on factors such as type of work or workload indicators (van Dieen and Vrielink 1998, Beynon et al 2000, Dababneh et al 2001, Tiwari and Gite 2006 the time of day also seems to affect perceived strain.…”

“…In a field experiment with power tiller operators, Tiwari and Gite (2006) found some divergent results when analysing four activity-rest schedules. Each activity-rest schedule comprised 6 h working time and 2 h resting time.…”

“…However, it has not yet been completely clarified whether frequent short or infrequent long breaks with same total break time reduce strain during physically demanding work: effects presumably vary depending on factors such as type of analysed work, selected workload indicators or chosen activity-rest schedule (van Dieen and Vrielink 1998, Beynon et al 2000, Dababneh et al 2001, Tiwari and Gite 2006.…”

Determining an optimal recovery time for construction rebar workers after working to exhaustion in a hot and humid environment

“…The construction industry is found to be more hazardous than most other sectors [9] because it involves highly demanding physical tasks with various types of stresses resulted from awkward posture, excessive force demands, highly repetitive actions and excessive energy expenditure [10]. Physically demanding works combined with the exposure to high temperature, humidity, solar radiation but poor air ventilation can further increase the physical stress of workers during the daylong operation [11]. Time integrated fatigue accompanied by heat incurred disorders may lead to different types of injuries and accidents [12].…”