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An examination of exercise-related c...

Duncan, Lindsay R.

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An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise./
作者:	Duncan, Lindsay R.
面頁冊數:	217 p.
附註:	Source: Dissertation Abstracts International, Volume: 74-04(E), Section: B.
Contained By:	Dissertation Abstracts International74-04B(E).
標題:	Kinesiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR89506
ISBN:	9780494895061

An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise.
Duncan, Lindsay R.

An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise. - 217 p.

Source: Dissertation Abstracts International, Volume: 74-04(E), Section: B.

Thesis (Ph.D.)--The University of Western Ontario (Canada), 2011.

This item must not be sold to any third party vendors.

The purpose of this dissertation was to test the effectiveness of mental imagery interventions for enhancing exercise-related cognitions during long-term exercise programs. In order to ensure the integrity of the imagery intervention, a secondary purpose of this dissertation was to test the dependent variables within the context of their respective theories to confirm their distinctive nature and therefore suitability as targets of an imagery intervention. To achieve these purposes, four studies were conducted using a multi-dimensional conceptualization of self-efficacy for exercise (Rodgers & Sullivan, 2001) and Self-Determination Theory (SDT; Deci & Ryan, 1985) as theoretical frameworks.

ISBN: 9780494895061Subjects--Topical Terms:

517627
Kinesiology.

An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise.
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245 1 3 $a An examination of exercise-related cognitions and the impact of mental imagery interventions in exercise.
300 $a 217 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-04(E), Section: B.
502 $a Thesis (Ph.D.)--The University of Western Ontario (Canada), 2011.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The purpose of this dissertation was to test the effectiveness of mental imagery interventions for enhancing exercise-related cognitions during long-term exercise programs. In order to ensure the integrity of the imagery intervention, a secondary purpose of this dissertation was to test the dependent variables within the context of their respective theories to confirm their distinctive nature and therefore suitability as targets of an imagery intervention. To achieve these purposes, four studies were conducted using a multi-dimensional conceptualization of self-efficacy for exercise (Rodgers & Sullivan, 2001) and Self-Determination Theory (SDT; Deci & Ryan, 1985) as theoretical frameworks.
520 $a In Study 1 the multi-dimensional conceptualization of SE for exercise was examined in order to demonstrate the distinctive nature of task, coping, and scheduling SE in an exercise context. Study 2 examined the effectiveness of a mental imagery intervention within the context of SE theory. Specifically, Study 2 sought to determine if three types of SE could be differentially influenced using guided imagery interventions in an experimental design controlling for overt mastery experiences. Studies 3 and 4 employed self-determination theory as the framework for testing the effectiveness of an imagery intervention. The purpose of study 3 was to examine how different types of motivation contribute to various characteristics of exercise behaviour. Finally, Study 4 examined the effects of a mental imagery intervention designed to enhance integrated regulation.
520 $a The results of Study 1 revealed that scheduling SE was the strongest predictor of exercise frequency, duration and weekly METS for males and females. Coping SE added to the prediction of frequency and weekly METS for males and females, as well as duration and number of years of exercising for males only. Task SE added to the prediction of duration for males and females and was a unique predictor of number of years for females only. The findings revealed that task, coping, and scheduling SE for exercise can differentially predict various components of regular exercise supporting the contention that the three types of SE are distinct. All three types of SE were determined to be important for both males and females however, the relative importance of each type might be gender specific.
520 $a Study 2 demonstrated that targeting each type of SE through an imagery intervention has separable effects that are primarily restricted to the targeted SE type. Furthermore, the imagery intervention was successful in enhancing task, coping, and scheduling SE beyond the levels that occurred as a result of overt experience. The results of Study 2 provided support for the use of imagery interventions for influencing SE for exercise.
520 $a The results of Study 3 supported previous research and demonstrated that integrated and identified regulations predicted exercise frequency for males and females. Integrated regulation was found to be the only predictor of exercise duration across both genders. Finally, introjected regulation predicted exercise intensity for females only. These findings suggested that exercise regulations that vary in their degree of internalization can differentially predict characteristics of exercise behaviour.
520 $a Study 4 provided additional support for the effectiveness of imagery interventions for enhancing exercise-related cognitions. Specifically, participants in the imagery group experienced greater changes in integration compared to control participants.
520 $a Overall these four studies offer practical considerations and directions for future exercise imagery research. This dissertation demonstrates that imagery interventions can be employed to enhance exercise-related cognitions among female exercise initiates in a laboratory setting. Future research should examine whether or not imagery-induced changes in SE and motivation as conceptualized in SDT can translate into increases in exercise behaviour or physical activity.
520 $a Keywords: imagery, exercise, self-efficacy, integrated regulation, self-determination.
590 $a School code: 0784.
650 4 $a Kinesiology. $3 517627
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710 2 $a The University of Western Ontario (Canada). $3 1017622
773 0 $t Dissertation Abstracts International $g 74-04B(E).
790 $a 0784
791 $a Ph.D.
792 $a 2011
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR89506