Determinants of physical activity satisfaction and digital health adoption in UK adults: results from the 7PSC Study

Background Physical activity (PA) is a cornerstone of self-care and a major determinant of population health. Despite well-established benefits, most adults do not achieve recommended activity levels. Understanding behavioural patterns, barriers and the role of digital technologies is essential to inform public health interventions. This study presents findings on physical activity within the Seven Pillars of Self-Care (7PSC) framework, focusing on behaviours, satisfaction and predictors of digital health adoption. Methods A cross-sectional online survey of 1,532 UK adults was conducted in 2025 as part of the 7PSC Study. The survey captured sociodemographic data, PA behaviours, knowledge of World Health Organization (WHO) guidelines, motivations, barriers and digital technology use. Logistic and ordinal logistic regression models examined predictors of PA satisfaction and digital tool adoption. Results Participants’ mean age was 43 years (SD=12.9), with balanced gender representation. Nearly half (43%) reported daily walking, yet 35% undertook no vigorous and 36% no moderate activity in the past week. Sitting time averaged 6 hours/day. Barriers were widespread, with lack of time (56%) and motivation (55%) most common. Confidence was strongly associated with satisfaction: those “very confident” in staying active had threefold greater odds of PA satisfaction (OR=3.3, 95% CI: 2.24–4.86, p<0.001) compared to those "confident.".Each additional barrier was associated with 26% lower odds of satisfaction (OR=0.74, 95% CI: 0.63–0.86, p<0.001). Digital tool use was reported by 53% of participants, predominantly smartphone apps and wearables. Adoption was associated with younger age, female gender, higher readiness and confidence, but not education or barrier burden. Conclusions Findings highlight the central role of confidence and the detrimental impact of barriers on Physical Activity satisfaction, while readiness amplifies sensitivity to barriers rather than buffering them. Interventions should prioritise barrier reduction and confidence-building strategies to enhance self-care through physical activity. Longitudinal studies are needed to establish temporal relationships and causal mechanisms.