The impact of a gender-specific physical activity intervention on the fitness and fatness profile of men in Ireland

Background Amid increasing concerns about rising obesity rates and unhealthy lifestyle behaviours, physical activity (PA) is seen as a prophylactic to many chronic conditions affecting men. Men respond best to community-based PA programmes, using gender-specific promotional and delivery strategies. ‘Men on the Move’ (MOM) was developed on this basis and targeted inactive adult men in Ireland. Methods Sedentary men (n = 927; age = 50.7 ± 10.9 years; weight = 92.7 ± 16.0 kg; METS = 6.06 ± 2.13) were recruited across eight counties: four ‘intervention group’ (IG; n = 501) and four ‘comparison-in-waiting group’ (CG; n = 426). The MOM programme involved structured group exercise twice weekly for 12 weeks (W), along with health-related workshops with the groups maintained up to 52 W. Primary outcome measures [aerobic fitness, bodyweight and waist circumference (WC)] together with self-administered questionnaires were used to gather participant data at baseline, 12, 26 and 52 W. Results Results show a net positive effect on aerobic fitness, bodyweight and WC, with significant (P < 0.05) net change scores observed in the IG compared to the CG (METS: 12 W = +2.20, 26 W = +1.89, 52 W = +0.92; weight: 12 W = −1.72 kg, 26 W = −1.95 kg, 52 W = −1.89 kg; WC: 12 W = −4.54 cm, 26 W = −2.69 cm, 52 W = −3.16 cm). The corresponding reduction in cardiovascular disease risk is particularly significant in the context of a previously inactive and overweight cohort. The high ‘dropout’ (42.7% presenting at 52 W), however, is of particular concern, with ‘dropouts’ having lower levels of aerobic fitness and higher bodyweight/WC at baseline. Conclusions Notwithstanding dropout issues, findings address an important gap in public health practice by informing the translational scale-up of a small controllable gender-specific PA intervention, MOM, to a national population-based PA intervention targeting inactive men.