PET effects on physical fitness in  healthy workers  are moderated by age ( CRF ) and occupation type ( muscular endurance ) .
Further , independently computed subgroup analyses indicated that the training period of the PET programs may play an important role in improving CRF in workers
There is evidence that physical exercise training ( PET ) conducted at the workplace is effective in improving physical fitness and thus health .
However , there is no current systematic review available that provides high-level evidence regarding the effects of PET on physical fitness in the workforce .
To quantify sex- , age- , and occupation type-specific effects of PET on physical fitness and to characterize dose – response relationships of PET modalities that could maximize gains in physical fitness in the working population .
Impact of a Supervised Worksite Exercise Program on Back and Core Muscular Endurance in Firefighters
Purpose . Low back pain is a leading cause of disability in firefighters and is related to poor muscular endurance . This study examined the impact of supervised worksite exercise on back and core muscular endurance in firefighters . Design . A cluster r and omized controlled trial was used for this study Setting . The study occurred in fire stations of a municipal fire department ( Tampa , Florida ) . Subjects . Subjects were 96 full-duty career firefighters who were r and omly assigned by fire station to exercise ( n = 54 ) or control ( n = 42 ) groups . Intervention . Exercise group participants completed a supervised exercise targeting the back and core muscles while on duty , two times per week for 24 weeks , in addition to their usual fitness regimen . Control group participants continued their usual fitness regimen . Measures . Back and core muscular endurance was assessed with the Biering-Sorensen test and plank test , respectively . Analysis . Changes in back and core muscular endurance from baseline to 24 weeks were compared between groups using analysis of covariance and linear mixed effects models . Results . After 24 weeks , the exercise group had 12 % greater ( p = .021 ) back muscular endurance and 21 % greater ( p= .0006 ) core muscular endurance than did the control group . The exercise intervention did not disrupt operations or job performance . Conclusion . A supervised worksite exercise program was safe and effective in improving back and core muscular endurance in firefighters , which could protect against future low back pain
PET effects on physical fitness in  healthy workers  are moderated by age ( CRF ) and occupation type ( muscular endurance ) .
Further , independently computed subgroup analyses indicated that the training period of the PET programs may play an important role in improving CRF in workers
There is evidence that physical exercise training ( PET ) conducted at the workplace is effective in improving physical fitness and thus health .
However , there is no current systematic review available that provides high-level evidence regarding the effects of PET on physical fitness in the workforce .
To quantify sex- , age- , and occupation type-specific effects of PET on physical fitness and to characterize dose – response relationships of PET modalities that could maximize gains in physical fitness in the working population .