Psychosocial Determinants and Perceived Environmental Barriers as Mediators of the Effectiveness of a Web-Based Tailored Intervention Promoting Physical Activity in Adolescents: The HELENA Activ-O-Meter

被引：9

作者：

Cook, Tina Louisa ^{[1
]}

De Bourdeaudhuij, Ilse ^{[2
]}

Maes, Lea ^{[3
]}

Haerens, Leen ^{[2
]}

Grammatikaki, Evangelia ^{[1
]}

Widhalm, Kurt ^{[4
]}

Kwak, Lydia ^{[5
]}

Plada, Maria ^{[6
]}

Alberto Moreno, Luis ^{[7
]}

Tountas, Yannis ^{[8
]}

Zampelas, Antonis ^{[9
]}

Manios, Yannis ^{[1
]}

机构：

[1] Harokopio Univ, Dept Nutr & Dietet, Athens, Greece

[2] Univ Ghent, Dept Movement & Sports Sci, B-9000 Ghent, Belgium

[3] Univ Ghent, Dept Publ Hlth, B-9000 Ghent, Belgium

[4] Private Med Univ, Dept Pediat, Salzburg, Austria

[5] Karolinska Inst, Dept Biosci & Nutr, Huddinge, Sweden

[6] Univ Crete, Sch Med, Prevent Med & Nutr Unit, Iraklion, Greece

[7] Univ Zaragoza, GENUD Growth Exercise NUtr & Dev Res Grp, Zaragoza, Spain

[8] Ctr Hlth Serv Res, Dept Hyg, Epidemiol & Med Stat Med Sch, Athens, Greece

[9] Agr Univ Athens, Dept Food Sci & Technol, Human Nutr Unit, GR-11855 Athens, Greece

来源：

JOURNAL OF PHYSICAL ACTIVITY & HEALTH | 2014年 / 11卷 / 04期

关键词：

teenagers; exercise; mediation analysis; behavioral intervention; BALANCE BEHAVIOR INTERVENTIONS; CHILDREN; QUESTIONNAIRE; VALIDITY; RELIABILITY;

D O I：

10.1123/jpah.2012-0120

中图分类号：

R1 [预防医学、卫生学];

学科分类号：

1004 ; 120402 ;

摘要：

Background: The aim was to examine if psychosocial determinants (attitudes, self-efficacy, social support from a sports partner) and perceived environmental barriers (PEB) of physical activity (PA) mediated the effect of a 3-month Internet-based intervention on PA in European adolescents. Methods: A sample of 536 adolescents (51% boys) aged 12-17 years were randomly assigned to intervention or control condition. Questionnaires were used to assess different PA behaviors, psychosocial determinants and PEB at baseline and at 3-month follow-up. Mediating effects were assessed with the bootstrapping method. Results: PEB regarding neighborhood safety mediated the effect of the intervention on all PA indices. PEB regarding sports facilities availability at neighborhood and PEB regarding sport-related facilities availability at school mediated the effect of the intervention on moderate to vigorous PA (MVPA) and moderate PA (in leisure time and at school, respectively). Social support from a sports partner suppressed the effect of the intervention on vigorous PA and MVPA. No other factor had a mediation effect. Conclusions: All PEB measures appear to mediate PA behaviors of different intensities and in different contexts. Interventions promoting PA in adolescents should also focus on improving the targeted PEB as mediators of engagement in PA to bring the desired effects in actual behaviors.

引用

页码：741 / 751

页数：11

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