Multi-Component Physical Activity Interventions in the UK Must Consider Determinants of Activity to Increase Effectiveness

• Main Authors: Mark A. Faghy, Kirsty E. Armstrong-Booth, Vicki Staples, Micheal J. Duncan, Clare M. P. Roscoe
• Format: Article
• Language: English
• Published: MDPI AG 2021-06-01
• Series: Journal of Functional Morphology and Kinesiology
• Subjects: physical activity; sedentary behaviour; theoretical approaches; behaviour
• Online Access: https://www.mdpi.com/2411-5142/6/3/56

Interventions to increase physical activity in children have adopted broad approaches and achieved varying success. There is a need to adopt approaches underpinned with a theoretical basis. Accordingly, the aim here was to implement and evaluate a 12-week intervention designed using the concepts of the COM-B model to determine the effect this has on physical activity levels. One hundred and forty-seven school-age children (mean age 8.9 ± 1.3 years) took part in a 12-week program delivered in a school setting. Topics included physical activity, healthy eating, sleep quality and reducing screen time/sedentary activities when not in school. A sample of participants wore a wrist-worn accelerometer for seven days pre-and post-intervention (N = 11). The physical activity frequency was unchanged (2.9 ± 1.0 AU) when compared with post-intervention values (3.1 ± 0.8 AU, mean increase 6.8 ± 3.7%, <i>p</i> > 0.05). Changes were observed in the daily consumption of fruit and vegetables (pre-intervention 44.6% vs. post-intervention 60.2%, <i>p</i> < 0.05). Sedentary time, light activity, moderate activity and vigorous activity were unchanged post-intervention (<i>p</i> > 0.05). There is a need to adopt a broader approach that incorporates a theoretical basis and considers the complex ways by which physical activity behaviours are influenced.