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 .
Effect of individualized worksite exercise training on aerobic capacity and muscle strength among construction workers--a randomized controlled intervention study.
OBJECTIVES The combination of high physical work dem and s and low physical capacity has been shown to increase the risk for cardiovascular disease and musculoskeletal disorders . The aim of this study was to assess the physical capacity of construction workers and evaluate the effect of individually tailored exercise programs on their physical fitness and muscular capacity . METHOD The study was a r and omized controlled trial of male constructions workers allocated to either an exercise or control group . The intervention lasted 12 weeks , and the exercise group trained 3 x 20 minutes a week . The participants completed health checks before and after the intervention period . Data from the first health check were used to tailor the exercise in the interventions . RESULTS At baseline , participants had maximal oxygen consumption ( VO(2max ) ) of 2.9 [ st and ard deviation ( SD ) 0.7 ] l/min and body mass index ( BMI ) of 28.3 ( SD 4.7 ) . Compared to representative data on employees in Denmark ( N=78 ) , this study population ( N=67 ) had significantly lower relative aerobic capacity [ difference in z-score -1.13 , st and ard error ( SE ) 0.1 , P<0.001 ] and higher BMI [ difference in z-score 1.10 , SE 0.2 , P<0.001 ] at baseline . With respect to the intervention , group x time analyses showed a significant difference in estimated change in VO(2max)of 0.4 l/min for the exercise group and 0.0 l/min for the control group ( P<0.001 ) . Body mass and other general health measures remained unchanged . CONCLUSION Training for 20 minutes , 3 times a week significantly increased VO(2max)with a clinical ly relevant magnitude regarding risk of cardiometabolic disorders . This study demonstrates a good effectiveness for integrating short exercise bouts into organizational routines among constructions workers
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 .