Measuring perceived exercise capability and investigating its relationship with childhood obesity: a feasibility study.
Int J Obes (Lond)
; 40(1): 34-8, 2016 Jan.
Article
em En
| MEDLINE
| ID: mdl-26443341
ABSTRACT
BACKGROUND/OBJECTIVES:
According to the COM-B ('Capability', 'Opportunity', 'Motivation' and 'Behaviour') model of behaviour, three factors are essential for behaviour to occur capability, opportunity and motivation. Obese children are less likely to feel capable of exercising. The implementation of a new methodological approach to investigate the relationship between perceived exercise capability (PEC) and childhood obesity was conducted, which involved creating a new instrument, and demonstrating how it can be used to measure obesity intervention outcomes. SUBJECTS/METHODS:
A questionnaire aiming to measure perceived exercise capability, opportunity and motivation was systematically constructed using the COM-B model and administered to 71 obese children (aged 9-17 years (12.24±0.2.01), body mass index (BMI) standard deviation scores (SDS) 2.80±0.660) at a weight-management camp in northern England. Scale validity and reliability was assessed. Relationships between PEC, as measured by the questionnaire, and BMI SDS were investigated for the children at the weight-management camp, and for 45 Spanish schoolchildren (aged 9-13 years, (10.52±1.23), BMI SDS 0.80±0.99). A pilot study, demonstrating how the questionnaire can be used to measure the effectiveness of an intervention aiming to bring about improved PEC for weight-management camp attendees, was conducted. No participants withdrew from these studies.RESULTS:
The questionnaire domain (exercise capability, opportunity and motivation) composite scales were found to have adequate internal consistency (a=0.712-0.796) and construct validity (χ(2)/degrees of freedom=1.55, root mean square error of approximation=0.072, comparative fit index=0.92). Linear regression revealed that low PEC was associated with higher baseline BMI SDS for both UK (b=-0.289, P=0.010) and Spanish (b=-0.446, P=0.047) participants. Pilot study findings provide preliminary evidence for PEC improvements through intervention being achievable, and measurable using the questionnaire.CONCLUSIONS:
Evidence is presented for reliability and validity of the questionnaire, and for feasibility of its use in the context of a childhood obesity intervention. Future research could investigate the link between PEC and childhood obesity further.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Exercício Físico
/
Tolerância ao Exercício
/
Programas de Redução de Peso
/
Obesidade Infantil
Tipo de estudo:
Prognostic_studies
/
Qualitative_research
Limite:
Adolescent
/
Child
/
Female
/
Humans
/
Male
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article