Mediating Effect of Motor Competence on the Relationship between Physical Activity and Quality of Life in Children with Attention Deficit Hyperactivity Disorder

The effect of physical activity on quality of life and parenting stress in children with attention-deficit/hyperactivity disorder: A randomized controlled trial

BACKGROUND

Poorer quality of life (QoL) is commonly observed in children with Attention-deficit/Hyperactivity Disorder (ADHD). Parents of children with ADHD also perceived elevated levels of parenting stress. Previous research has documented the positive effects of physical activity (PA) on managing ADHD symptoms. It is critical to implement ADHD management with broader functioning from both children's and parents' perspectives.

OBJECTIVE

This study aimed to examine whether PA would exert an influence on the QoL of children with ADHD and parenting stress of their parents.

METHODS

Forty-three children with ADHD (6-12 years) were randomly assigned to the PA intervention and waitlist control groups. Children in the intervention group participated in a 12-week PA program. Parent-reported QoL and parenting stress were assessed before and immediately after the intervention. Analysis of covariance with a mixed factorial design of 2 (time: before vs. after intervention) × 2 (group: PA intervention vs. waitlist control) was conducted to examine changes in QoL and parenting stress over the 12 weeks.

RESULTS

Compared to the control group, parents of children in the intervention group reported significant reduced overall parenting stress (p = .021, η² = 0.142) and child domain of parenting stress (p = .024, η² = 0.138) after the intervention. No significant improvement in QoL was documented in either group.

CONCLUSIONS

The participation of PA intervention positively impacts parenting stress perceived by parents of children with ADHD, which provides further evidence of the family-wide benefits of the PA intervention.

The Associations Among Physical Activity, Quality of Life, and Self-Concept in Children and Adolescents With Disabilities: A Moderated Mediation Model

OBJECTIVES

This study aimed to examine a moderated mediation model of the associations among physical activity (PA), quality of life (QoL), and self-concept (SC) in children and adolescents with physical disabilities (PDs) and intellectual disabilities (IDs).

MATERIALS AND METHODS

A total of 288 children and adolescents with PDs and IDs, aged between 6 and 17 years, were recruited from 16 special schools in Hong Kong. PA, QoL, and SC were measured using the Physical Activity Questionnaire for Older Children (PAQ-C), Paediatric Quality of Life Inventory (PedsQL), and Physical Self-Description Questionnaire Short Form, respectively. Mediation (i.e., PA, QoL, and SC) and moderation analyses (i.e., age, sex, and parental education level) were conducted by structural equation modelling (SEM) using the M plus and PROCESS macro for SPSS.

RESULTS

Physical activity (PA) was positively associated with SC (PDs: β = 0.373; IDs: β = 0.343), and SC significantly mediated the associations between PA and QoL in children and adolescents with PDs (parent proxy-report QoL: β = 0.114; self-report QoL: β = 0.141) and IDs (self-report QoL: β = 0.204). The mediating effects of SC accounted for 16 and 15% of the total effects of PA on QoL (parent proxy-report and self-report) respectively, in participants with PDs, and 8 and 4%, respectively, in those with IDs. Males and participants with higher parental education levels reported stronger associations among PA, QoL, and SC than their counterparts.

CONCLUSION

This study supports mediating and moderating effects on the associations among PA, QoL, and SC in children and adolescents with PDs and IDs. Future researchers should consider PA intervention in mental health services and provide tailor-made PA programmes based on personal and environmental factors for children and adolescents with disabilities.