title: Linking Psychological Need Satisfaction and Physical Activity to Dimensions of Health-Related Quality of Life During Adolescence: A Test of Direct, Reciprocal, and Mediating Effects.
abstract: Despite research attention toward understanding relationships between psychological need satisfaction (PNS), moderate-to-vigorous-intensity physical activity (MVPA), and health-related quality of life (HRQoL), methodological limitations make it difficult to establish reciprocal and mediating effects. Reciprocal relationships between PNS and MVPA were examined over 4 years, and their effects on adolescents' change in dimensions of HRQoL were examined. Self-reported data were collected from 932 adolescents (Mage= 10.9 years) every 4 months beginning in Grades 5/6. At the between-persons and within-person level, earlier PNS predicted later MVPA whereas earlier MVPA did not predict later PNS. Increases in MVPA were associated with greater change in physical (βlinear= .61, βquadratic= .77, ps = .03) and school functioning (βlinear= .68, βquadratic= .84, ps = .03) but no other dimensions of HRQoL (p > .05). Decreases in PNS were not associated with any of the dimensions of HRQoL. Fostering adolescents' PNS could be a starting point to increase MVPA, which, in turn, may enhance select dimensions of HRQoL.
authors.affiliation: 1 The Children's Hospital of Eastern Ontario Research Institute and University of Ottawa.
authors.forename: Katie E
authors.initials: KE
authors.lastname: Gunnell
authors.affiliation: 2 University of Ottawa, Institut de Recherche de l'Hôpital Montfort, and Ottawa Hospital Research Institute.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Brunet
authors.affiliation: 3 University of Toronto.
authors.forename: Catherine
authors.initials: C
authors.lastname: Sabiston
authors.affiliation: 4 Université de Sherbrooke and Centre de formation médicale du Nouveau-Brunswick.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Bélanger
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D002648:Child; D002652:Child Behavior / Q000523:psychology*; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010549:Personal Satisfaction; D011788:Quality of Life / Q000523:psychology*
keywords: adolescents; longitudinal; physical activity; psychological need satisfaction; quality of life; reciprocal