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1.
The aim of the present study was to assess the influence of self-efficacy and past behaviour on young people's physical activity intentions using an augmented version of Ajzen's Theory of Planned Behaviour. We hypothesized that self-efficacy would exhibit discriminant validity with perceived behavioural control and explain unique variance in young people's intentions to participate in physical activity. We also expected that past physical activity behaviour would attenuate the influence of attitude, subjective norms, perceived behavioural control and self-efficacy on intention. The sample comprised 1152 young people aged 13.5 - 0.6 years (mean - s ) who completed inventories assessing their physical activity intentions, attitudes, subjective norms, perceived behavioural control, self-efficacy and past physical activity behaviour. A confirmatory factor analysis demonstrated that the constructs of the Theory of Planned Behaviour achieved discriminant validity. Furthermore, the measures of attitudes, subjective norms, perceived behavioural control and self-efficacy were significantly related to their respective belief-based measures, supporting the concurrent validity of the measures of the Theory of Planned Behaviour. A non-standard structural equation model demonstrated that attitude and self-efficacy were strong predictors of physical activity intention, but perceived behavioural control and subjective norms were not. Self-efficacy attenuated the influence of attitudes and perceived behavioural control on intention. Past behaviour predicted intention directly and indirectly through self-efficacy and attitude. The present findings demonstrate that young people with positive attitudes and high self-efficacy are more likely to form intentions to participate in physical activity. Furthermore, controlling for past physical activity behaviour revealed that the unique effects of self-efficacy and attitudes on young people's physical activity intentions were unaltered.  相似文献   

2.
Three studies of exercise adherence and attitudes are reported that tested the Theory of Reasoned Action and the Theory of Planned Behaviour. In a prospective study of adherence to a private fitness club, structural equation modelling path analysis showed that attitudinal and social normative components of the Theory of Reasoned Action accounted for 13.1% of the variance in adherence 4 months later, although only social norm significantly predicted intention. In a second study, the Theory of Planned Behaviour was used to predict both physical activity and sedentary behaviour. Path analyses showed that attitude and perceived control, but not social norm, predicted total physical activity. Physical activity was predicted from intentions and control over sedentary behaviour. Finally, an intervention study with previously sedentary adults showed that intentions to be active measured at the start and end of a 10-week intervention were associated with the planned behaviour variables. A multivariate analysis of variance revealed no significant multivariate effects for time on the planned behaviour variables measured before and after intervention. Qualitative data provided evidence that participants had a positive experience on the intervention programme and supported the role of social normative factors in the adherence process.  相似文献   

3.
Three studies of exercise adherence and attitudes are reported that tested the Theory of Reasoned Action and the Theory of Planned Behaviour. In a prospective study of adherence to a private fitness club, structural equation modelling path analysis showed that attitudinal and social normative components of the Theory of Reasoned Action accounted for 13.1% of the variance in adherence 4 months later, although only social norm significantly predicted intention. In a second study, the Theory of Planned Behaviour was used to predict both physical activity and sedentary behaviour. Path analyses showed that attitude and perceived control, but not social norm, predicted total physical activity. Physical activity was predicted from intentions and control over sedentary behaviour. Finally, an intervention study with previously sedentary adults showed that intentions to be active measured at the start and end of a 10-week intervention were associated with the planned behaviour variables. A multivariate analysis of variance revealed no significant multivariate effects for time on the planned behaviour variables measured before and after intervention. Qualitative data provided evidence that participants had a positive experience on the intervention programme and supported the role of social normative factors in the adherence process.  相似文献   

4.
This study aimed to use an extended theory of planned behaviour (TPB), which incorporated additional self-efficacy and past behaviour, to predict the intention to engage in moderate-to-vigorous physical activity (MVPA) and the MVPA level of Chinese adolescents. Questionnaires that focused on MVPA, attitude, subjective norm, perceived behavioural control (PBC), self-efficacy and past behaviour related to the MVPA engagement were administered to a sample of 488 young people. Multiple regression analyses provided moderate support for TPB. Three TPB constructs predicted 28.7% of the variance in intentions to engage in MVPA, and that PBC, but not intention, explained 3.4% of the variance in MVPA. Self-efficacy significantly affected intention and behaviour over and above the influence of TPB. Past behaviour had a small but significant improvement in the prediction of intention, but no improvement in the prediction of MVPA. Based on the results, interventions should target adolescent self-efficacy and PBC in physical activity participation.  相似文献   

5.
In the present study, we examined the utility of volitional and forced intentions in predicting participation in physical activities and effort within the theory of planned behaviour. Four hundred and forty-four participants (184 males, 260 females) aged 19.1 +/- 3.3 years (mean +/- s) completed self-report measures of intentions, attitudes, subjective norms, perceived behavioural control, volitional intentions, forced intentions, and past behaviour in a physical activity context. Six weeks later, they completed self-report measures of physical activity behaviour and effort. Results indicated that volitional intentions and forced intentions contributed to the prediction of effort over and above intentions, attitudes, subjective norms, perceptions of control, past behaviour, and the product terms of attitudesxintentions and subjective normsxintentions. Volitional intentions and forced intentions did not predict participation in physical activities over and above effort. We concluded that volitional intentions and forced intentions assist in the explanation of effort in the context of physical activity behaviour.  相似文献   

6.
Abstract

In the present study, we examined the utility of volitional and forced intentions in predicting participation in physical activities and effort within the theory of planned behaviour. Four hundred and forty-four participants (184 males, 260 females) aged 19.1 ± 3.3 years (mean ± s) completed self-report measures of intentions, attitudes, subjective norms, perceived behavioural control, volitional intentions, forced intentions, and past behaviour in a physical activity context. Six weeks later, they completed self-report measures of physical activity behaviour and effort. Results indicated that volitional intentions and forced intentions contributed to the prediction of effort over and above intentions, attitudes, subjective norms, perceptions of control, past behaviour, and the product terms of attitudes×intentions and subjective norms×intentions. Volitional intentions and forced intentions did not predict participation in physical activities over and above effort. We concluded that volitional intentions and forced intentions assist in the explanation of effort in the context of physical activity behaviour.  相似文献   

7.
8.
The purpose of our investigation was to examine determinants of teachers' intentions to teach physically active physical education classes (i.e., spend at least 50% of class time with the students engaged in moderate to vigorous physical activity). Based on the theory of planned behavior, a model was examined hypothesizing that teachers' intentions were determined by subjective norm, attitude, and perceived behavioral control. Grounded in self-efficacy theory, it was hypothesized that program goal importance and hierarchical and barrier self-efficacy would also predict intention. Using a series of hierarchical regression analyses, the theory of planned behavior was supported by accounting for 59% of the variance in intention due to attitude, perceived behavioral control, and subjective norm. Self-efficacy theory based variables received minimal support.  相似文献   

9.
The current study aimed to test the validity of an extended theory of planned behavior model (TPB; Ajzen, 1991), incorporating additional self and social influences, for predicting adolescent moderate-to-vigorous physical activity. Participants (N = 423) completed an initial questionnaire that assessed the standard TPB constructs of attitude, subjective norm, and perceived behavioral control, as well as past behavior, self-identity, and the additional social influence variables of group norms, family social support, friends' social support, and social provisions. One week after completion of the main questionnaire, participants completed a follow-up questionnaire that assessed self-reported physical activity during the previous week. The standard TPB variable--past behavior, self-identity, and group norms, but not social support influences--predicted intentions, with intention, past behavior, and self-identity predicting behavior. Overall, the results provide support for an extended version of the TPB incorporating self-identity and those social influences linked explicitly to membership of a behaviorally relevant reference group.  相似文献   

10.
This prospective study was designed to investigate the influence of high students' perceived teacher autonomy support in mandatory physical education on their intention and actual enrollment in elective physical education. Participants included 545 ninth-grade students enrolled in three suburban high schools in a major midwestern metropolitan area. A series of hypothesized models related to autonomy support within the Theory of Planned Behavior were tested. Structural equation modeling results demonstrated that perceived autonomy support provided by teachers in mandatory physical education could predict elective physical education enrollment indirectly via the mediation of attitudes and intention in the Theory of Planned Behavior Providing support for students' autonomy in physical education may hold potential promise for enhancing their future physical activity engagement.  相似文献   

11.
The present study tested the cross-cultural generalizability of the measurement and structural parameters of the theory of planned behavior (TPB) among youth in a physical activity context. Pupils from five cultural groups completed measures of attitudes, subjective norms, perceived behavioral control (PBC), and intentions for physical activity. Five weeks later, participants completed self-report measures of physical activity behavior. Confirmatory factor analyses and multisample structural equation models revealed well-fitting models within each sample with minimal variations in the measurement parameters across cultures. There were a few significant cross-cultural differences in the structural relations among the TPB constructs. Attitudes predicted intentions in all samples (beta range = .300 to .550), whereas the effect of the subjective norms on intention was nonsignificant in all but the Hungarian sample (beta = .243). Conversely, the effect of PBC on intentions was significant (beta range = .302 to .573) in all but the Hungarian sample. Findings support the generalizability of the measures and pattern of effects for the TPB among young people in a physical activity context.  相似文献   

12.
Attitude has been shown to be an important antecedent of physical activity intentions and behaviour. It is unclear whether the attitude-intention relationship is stable over time. The aim of the present study was to examine the stability of the attitude-intention relationship over a 6 week period. A panel study of 65 males and 81 females aged 20.6+/-0.8 years was conducted, in which measures of attitudes, intentions, self-reported physical activity and perceived behavioural control were assessed at the beginning and end of the 6 weeks. The data were analysed using path analysis. Results indicated that the attitude-intention relationship was stable over time. In addition, the behaviour-intention relationship was undermined over time. It is recommended that interventions can facilitate adherence to physical activity by reinforcing attitude change during initial and later stages of treatment.  相似文献   

13.
Physical activity is beneficial at all stages of life, and has been linked as a protective factor from obesity, and other chronic health conditions. Despite the benefits of physical activity, less than half of US children meet the current recommendations, and activity levels decline with age. When planning physical activity interventions, behavioural theories should be utilised, given the inherent benefits theory-based approaches possess. The purpose of this study was to investigate how constructs of the Integrative Theoretical Model (IM) are associated with physical activity and screen time among children (9 years ±1.2; n = 264). Using structural equation modeling, a final model proved to have a good fit (CFI = 0.989; TLI = 0.975; RMSEA = 0.043), and results indicated intentions and perceived behavioural control (PBC) explained 19.4% of the variance for physical activity, and attitudes, perceived norms, and PBC accounted for 62% of the variance of intentions. Furthermore, attitudes and perceived norms were negatively associated with total screen time, and accounted for 10% of the variance. Results suggest that IM is a useful framework for explaining physical activity and screen time among children.  相似文献   

14.
Mass media campaigns are conducted to influence community norms around health behaviours, including physical activity. Campaigns can reach large populations at relatively low cost, to influence awareness, knowledge and beliefs through to intention and behaviour change. We reviewed 15 campaigns with an explicit focus on physical activity, and explored impacts upon a range of proximal and distal variables. Campaigns achieved high recall, with a median of 70% of the target group aware of the campaign. Increases in knowledge or attitudes to physical activity were found among half the campaigns that reported this measure. Few campaigns reported other proximal variables, such as saliency, beliefs, self-efficacy or behavioural intention. Increases in physical activity were reported among motivated sub-groups of volunteers, but few campaigns reported population increases in activity. Campaigns increase awareness of the issue of physical activity but may not have a population-level effect on behaviour. Campaigns should focus more on influencing proximal variables, such as social norms, to bring about long-term behaviour change. This should be seen as part of a broader strategy, including policy and environmental change. Evaluation designs that measure the full range of variables are preferred to an over-concentration on behaviour alone.  相似文献   

15.
Mass media campaigns are conducted to influence community norms around health behaviours, including physical activity. Campaigns can reach large populations at relatively low cost, to influence awareness, knowledge and beliefs through to intention and behaviour change. We reviewed 15 campaigns with an explicit focus on physical activity, and explored impacts upon a range of proximal and distal variables. Campaigns achieved high recall, with a median of 70% of the target group aware of the campaign. Increases in knowledge or attitudes to physical activity were found among half the campaigns that reported this measure. Few campaigns reported other proximal variables, such as saliency, beliefs, self-efficacy or behavioural intention. Increases in physical activity were reported among motivated sub-groups of volunteers, but few campaigns reported population increases in activity. Campaigns increase awareness of the issue of physical activity but may not have a population-level effect on behaviour. Campaigns should focus more on influencing proximal variables, such as social norms, to bring about long-term behaviour change. This should be seen as part of a broader strategy, including policy and environmental change. Evaluation designs that measure the full range of variables are preferred to an over-concentration on behaviour alone.  相似文献   

16.
检验计划行为理论预测青少年锻炼行为的稳定性和适用性.1 292名中学生完成了锻炼态度、主观规范、行为控制感、意图以及自陈锻炼问卷的测量.结构方程模型和多组比较方法分析发现,计划行为理论的预测模型得到各样本数据的良好拟合.预测模型的结构型态、因素负荷量、结构系数、结构协方差及结构残差有着跨性别和年级组的测量不变性,但测量残差组间不等值.模式各因素之间路径系数及因素方差解释力也有着跨组相似性,仅部分变量关系存在跨年级的差异.态度和主观规范对意图的直接影响不明显,而行为控制感是影响锻炼意图和行为的主要因素,对此进行了具体分析.该研究表明,基于计划行为理论的锻炼行为模式对青少年群体具有普遍适用性.  相似文献   

17.
This study examined the utility of Ajzen's (1985) theory of planned behaviour and Maddux's (1993) revised theory of planned behaviour to predict endurance training intentions and adherence of elite junior netball athletes. One hundred and fifteen athletes from the England Netball World Class Start Programme were assessed on constructs central to the predictions of the two theories. Adherence to a recommended endurance training programme was recorded in self-report diaries across a 9-week period. Validity for the diaries was supported by significant correlations (P < 0.001) with recalls across 7 days and 9 weeks. Adherence was moderate and variable between athletes (mean = 66.05, s = 25.75%). Two separate path analyses were conducted to examine the predictions of the theories. Goodness-of-fit indices suggested acceptable fit of the data to the models. Analyses showed that attitude towards the new behaviour, subjective norms and perceived behavioural control predicted training intentions. The relationship between intention and adherence was weak. The present results suggest that the constructs of the theory of planned behaviour offer some insight into the explanation of intentions to follow an endurance training programme. Constructs unique to the revised theory of planned behaviour did not significantly predict training intentions or behaviour. Implications for practitioners working with team sport performers are provided.  相似文献   

18.
This study examined the utility of Ajzen's () theory of planned behaviour and Maddux's () revised theory of planned behaviour to predict endurance training intentions and adherence of elite junior netball athletes. One hundred and fifteen athletes from the England Netball World Class Start Programme were assessed on constructs central to the predictions of the two theories. Adherence to a recommended endurance training programme was recorded in self-report diaries across a 9-week period. Validity for the diaries was supported by significant correlations (P <?0.001) with recalls across 7 days and 9 weeks. Adherence was moderate and variable between athletes (mean = 66.05, s = 25.75%). Two separate path analyses were conducted to examine the predictions of the theories. Goodness-of-fit indices suggested acceptable fit of the data to the models. Analyses showed that attitude towards the new behaviour, subjective norms and perceived behavioural control predicted training intentions. The relationship between intention and adherence was weak. The present results suggest that the constructs of the theory of planned behaviour offer some insight into the explanation of intentions to follow an endurance training programme. Constructs unique to the revised theory of planned behaviour did not significantly predict training intentions or behaviour. Implications for practitioners working with team sport performers are provided.  相似文献   

19.
An intervention based on the predictions of Maddux's revised Theory of Planned Behaviour was designed to improve fitness training adherence of a group of elite netball players. The intervention consisted of a persuasive communication and time management workshop, which targeted the social cognitive constructs of the theory. We adopted a multiple baseline across-individuals design over 14 weeks with 17 elite netball players. Baseline training adherence data were collected over the first 7 weeks. The targeted social cognitive constructs were assessed at baseline, post-intervention and follow-up. Large effect sizes for changes in training adherence from baseline to post-intervention were noted for 13 players (76%). Post-intervention analysis revealed significant changes in two of the targeted variables, perceived vulnerability and attitude towards current behaviour, suggesting that the intervention was associated with cognitive changes. Data from an intervention check provided additional evidence to support the efficacy of the intervention. A follow-up assessment over an additional 7 weeks showed that players' training frequency remained improved. The results support the view that the revised Theory of Planned Behaviour can help inform interventions that enhance the training adherence of elite netball players.  相似文献   

20.
An intervention based on the predictions of Maddux's revised Theory of Planned Behaviour was designed to improve fitness training adherence of a group of elite netball players. The intervention consisted of a persuasive communication and time management workshop, which targeted the social cognitive constructs of the theory. We adopted a multiple baseline across-individuals design over 14 weeks with 17 elite netball players. Baseline training adherence data were collected over the first 7 weeks. The targeted social cognitive constructs were assessed at baseline, post-intervention and follow-up. Large effect sizes for changes in training adherence from baseline to post-intervention were noted for 13 players (76%). Post-intervention analysis revealed significant changes in two of the targeted variables, perceived vulnerability and attitude towards current behaviour, suggesting that the intervention was associated with cognitive changes. Data from an intervention check provided additional evidence to support the efficacy of the intervention. A follow-up assessment over an additional 7 weeks showed that players' training frequency remained improved. The results support the view that the revised Theory of Planned Behaviour can help inform interventions that enhance the training adherence of elite netball players.  相似文献   

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