<style face="normal" font="default" size="100%">Study protocol: the effects of work-site exercise on the physical fitness and work-ability of older workers</style>

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0<style face="normal" font="default" size="100%">Study protocol: the effects of work-site exercise on the physical fitness and work-ability of older workers</style><style face="normal" font="default" size="100%">Study protocol: the effects of work-site exercise on the physical fitness and work-ability of older workers</style>