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 .
Effects of 12 months aerobic exercise intervention on work ability, need for recovery, productivity and rating of exertion among cleaners: a worksite RCT
Purpose This study assessed the effects of a worksite aerobic exercise intervention among cleaners on :  work ability , need for recovery , productivity , and rating of exertion . Methods In a monocentric r and omised controlled trial in Denmark , 116 , of 250 invited , cleaners were cluster-r and omised ( work location ; sex ; age ; length of service ) to aerobic exercise [ N = 57 , 44.9 years , 75.4 % female , body mass index ( BMI ) 26.2 ] , receiving 2 weekly aerobic exercise sessions during 12 months , or a  reference group ( N = 59 , 45.7 years , 76.3 % female , BMI 27.1 ) , receiving health-promoting lectures .  Self-reported data on outcomes and sociodemographic information were collected at baseline , and at 4 and 12 month follow-up . All outcomes were analysed in a linear repeated- measures 2 × 2 mixed-model by an intention-to-treat analysis approach . Results Drop-out was 26 and 33 % at 4 and 12 months , respectively  . Aerobic exercise adherence was 51 % during the first 4 months . At 4 month follow-up no effects were found . At 12 month follow-up , work ability significantly increased by 0.59 on a 0–10 scale ( 95 % CI 0.05–1.13 ) and need for recovery significantly decreased by − 11.0 on a 0–100 scale ( 95 % CI − 19.8 to − 2.2 ) in the aerobic exercise group compared to the reference group . Productivity and rating of exertion were unaltered . Analysis stratified on age showed significant effects only among the participants aged ≤ 45 years . Conclusions After 12 months work ability improved and need for recovery decreased . A period of 4 months was insufficient to affect these outcomes emphasising that longer interventions may be needed to induce effects on work ability and need for recovery
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 .