Psychological and physical benefits of circuit weight training in law enforcement personnel.

The effects of circuit weight training on mood, perceived stress, job satisfaction, and physical symptoms were investigated in a sample of state law enforcement officers. Forty-three male officers who were not regularly exercising were assigned to either 4 months of circuit weight training or a wait-list control condition. Four months of circuit weight training led to a significant increase in strength on cardiovascular fitness. Subjects also demonstrated significant improvements in mood, including decreases in somatization, anxiety, depression, and hostility. Circuit weight training also resulted in a decrease in reports of physical symptoms and in improvements in job satisfaction. Results indicated that subjects who dropped out of the exercise training program evidenced significantly greater anxiety, depression, and hostility at pretreatment than subjects who completed the program. These findings suggest that circuit weight training programs may contribute to important psychological benefits.