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Longitudinal associations between exercise identity and exercise motivation: A multilevel growth curve model approach

Artikel i vetenskaplig tidskrift
Författare N. Ntoumanis
A. Stenling
C. Thøgersen-Ntoumani
S. Vlachopoulos
Magnus Lindwall
D. F. Gucciardi
C. Tsakonitis
Publicerad i Scandinavian Journal of Medicine and Science in Sports
Volym 28
Nummer/häfte 2
Sidor 746-753
ISSN 0905-7188
Publiceringsår 2018
Publicerad vid Psykologiska institutionen
Institutionen för kost- och idrottsvetenskap
Sidor 746-753
Språk en
Länkar doi.org/10.1111/sms.12951
Ämnesord longitudinal, motivational regulations, physical activity, self-determination theory, adult, applied research, article, exercise, female, Greece, growth curve, health center, human, human experiment, identity, major clinical study, male, motivation, outcome variable, predictor variable, questionnaire
Ämneskategorier Idrottsvetenskap

Sammanfattning

Past work linking exercise identity and exercise motivation has been cross-sectional. This is the first study to model the relations between different types of exercise identity and exercise motivation longitudinally. Understanding the dynamic associations between these sets of variables has implications for theory development and applied research. This was a longitudinal survey study. Participants were 180 exercisers (79 men, 101 women) from Greece, who were recruited from fitness centers and were asked to complete questionnaires assessing exercise identity (exercise beliefs and role-identity) and exercise motivation (intrinsic, identified, introjected, external motivation, and amotivation) three times within a 6 month period. Multilevel growth curve modeling examined the role of motivational regulations as within- and between-level predictors of exercise identity, and a model in which exercise identity predicted exercise motivation at the within- and between-person levels. Results showed that within-person changes in intrinsic motivation, introjected, and identified regulations were positively and reciprocally related to within-person changes in exercise beliefs; intrinsic motivation was also a positive predictor of within-person changes in role-identity but not vice versa. Between-person differences in the means of predictor variables were predictive of initial levels and average rates of change in the outcome variables. The findings show support to the proposition that a strong exercise identity (particularly exercise beliefs) can foster motivation for behaviors that reinforce this identity. We also demonstrate that such relations can be reciprocal overtime and can depend on the type of motivation in question as well as between-person differences in absolute levels of these variables. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd

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