The relationship between fitness and health-related quality of life and the mediating role of self-determined motivation in overweight adolescents

Abstract

This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Riiser, K., Ommundsen, Y., Småstuen, M. C., Løndal, K., Misvaer, N., Helseth, S. (2014). The relationship between fitness and health-related quality of life and the mediating role of self-determined motivation in overweight adolescents. The relationship between fitness and health-related quality of life and the mediating role of self-determined motivation in overweight adolescentsAim: To examine the relationship between cardiorespiratory fitness (CRF) and health-related quality of life (HRQoL) among overweight adolescents and to test whether this relationship is mediated by body image (BI) and self-determined motivation for physical activity (PA) and exercise. Methods: 120 adolescents identified as overweight or obese were recruited through the school health service. The participants completed self-report instruments measuring HRQoL, BI and self-determined motivation for physical activity and exercise in addition to a 20-m shuttle-run test, and body mass index was calculated. Confirmatory factor analysis was conducted to evaluate the hypothesized fivedimensional structure of the Behavioural regulation in exercise questionnaire-2 (BREQ-2) used to measure self-determined motivation. Associations between the study variables were explored using univariate linear regression. Mediation was tested by a multistage regression approach. Results: The five-dimensional model of BREQ-2 showed acceptable fit for the data. We revealed a statistically significant association between cardiorespiratory fitness and HRQoL (4.16 [0.3-8.02]; p <0.05). CRF failed to affect BI in the first mediation equation, hence body image was excluded from further analyses. However, self-determined motivation proved to mediate the relationship between CRF and HRQoL. Conclusions: The results of this study suggest that the motivational mechanisms related to fitness can contribute to explain the association between CRF and HRQoL in adolescents with overweight. The findings are important from a public health point of view and should be taken into account in the development of PA-interventions for adolescents with overweight and obesity for the potential enhancement of their physical and psychosocial well-being.

Cardiorespiratory fitness and health‐related quality of life in adolescents: A longitudinal analysis from the LabMed Physical Activity Study

“…Our results confirm and extend previous cross‐sectional evidence on the positive association between cardiorespiratory fitness and HRQoL (Guedes et al, ; Marques et al, ; Padilla‐Moledo et al, ; Riiser et al, ). These results underscore the potential modifying effect of cardiorespiratory fitness on HRQoL during adolescence and may be clinically relevant to adolescents' psychological well‐being.…”

“…Several cross‐sectional studies of youth have shown a positive association between cardiorespiratory fitness and HRQoL (Guedes et al, ; Marques, Mota, Gaspar, & de Matos, ; Padilla‐Moledo et al, ; Riiser et al, ). However, despite of these findings, data from prospective studies are insufficient with regard to impact of changes in cardiorespiratory fitness on adolescents' HRQoL.…”

Resilience as a mediator between cardiorespiratory fitness and mental health‐related quality of life: A cross‐sectional study

“…However, the main purpose of this study was to examine the relationship between CRF, mental HRQoL, and resilience, and how resilience acts as a partial mediating step between CRF and mental HRQoL. A similar study found that self‐determined motivation, but not body image, is a mediator variable in the relationship between fitness and HRQoL in overweight adolescents (Riiser et al, ).…”

“…In addition, our study found a positive association between CRF and the MCS of HRQoL. There are several studies that support this relationship (Hakkinen et al, ; Riiser et al ., ). Of these, a systematic review concluded that there is consistent evidence of the association between high levels of physical activity or physical fitness (defining the latter as an indirect indicator of physical activity level, and a biologic phenotype affected by both physical activity and genetics) and better scores in various dimensions of HRQoL, including the mental dimension, in the general adult population (Bize et al, ).…”

A review of the physiological and psychological health and wellbeing of naval service personnel and the modalities used for monitoring

“…The MSFT has become widely used as a field test in both athletic and occupational settings [177–179]. The test assesses VO 2 max, which is calculated using the level achieved during the test [167] that is cross referenced with a table of oxygen uptake values [180].…”