<p>In modern society, individuals constantly pass judgments on their own body and physical competence as well as that of other people. All too often, the verdict is less favourable. For the person, these physical self-perceptions (PSP) may negatively affect global self-esteem, identity, and general mental well being. The overall aim of this thesis is to examine primarily the role that exercise, but also the roles that gender and culture, play in the formation of PSP. In Study I, using confirmatory factor analyses, strong support for the validity of a first-order, and a second-order hierarchical and multidimensional model of the Physical Self-Perception Profile (PSPP: Fox & Corbin, 1989) was found across three national samples (Great Britain, Sweden and Turkey) of university students. Cross-cultural differences were detected, with the British sample demonstrating higher latent means on all PSPP subdomains except for the physical condition subdomain (Condition), than the Swedish and Turkish samples. In Study II, a higher self-reported exercise frequency was associated with more positive PSP (in particular for Condition) and more importance attributed to PSP in Swedish university students. Males demonstrated higher overall PSPP-scores than females. In Study III, a true-experimental design with randomisation into an intervention and a control group was adopted. Strong support for the effects of an empowerment-based exercise intervention programme on PSP and social physique anxiety (SPA) over six months for adolescent girls was found. The relations of exercise, gender and culture with PSP, SPA and self-esteem are discussed from the standpoints of a variety of theoretical models (the EXSEM-model), and frameworks (self-presentation and objectification theory). The two theories of self-enhancement and skill-development are examined with regard to the direction of the exercise-physical self relationship and motivation for exercise. Arguments for the relevance of exercise and PSP for practitioners in promoting general mental well-being and preventing modern-day diseases are outlined.</p>

In modern society, individuals constantly pass judgments on their own body and physical competence as well as that of other people. All too often, the verdict is less favourable. For the person, these physical self-perceptions (PSP) may negatively affect global self-esteem, identity, and general mental well being. The overall aim of this thesis is to examine primarily the role that exercise, but also the roles that gender and culture, play in the formation of PSP. In Study I, using confirmatory factor analyses, strong support for the validity of a first-order, and a second-order hierarchical and multidimensional model of the Physical Self-Perception Profile (PSPP: Fox &amp; Corbin, 1989) was found across three national samples (Great Britain, Sweden and Turkey) of university students. Cross-cultural differences were detected, with the British sample demonstrating higher latent means on all PSPP subdomains except for the physical condition subdomain (Condition), than the Swedish and Turkish samples. In Study II, a higher self-reported exercise frequency was associated with more positive PSP (in particular for Condition) and more importance attributed to PSP in Swedish university students. Males demonstrated higher overall PSPP-scores than females. In Study III, a true-experimental design with randomisation into an intervention and a control group was adopted. Strong support for the effects of an empowerment-based exercise intervention programme on PSP and social physique anxiety (SPA) over six months for adolescent girls was found. The relations of exercise, gender and culture with PSP, SPA and self-esteem are discussed from the standpoints of a variety of theoretical models (the EXSEM-model), and frameworks (self-presentation and objectification theory). The two theories of self-enhancement and skill-development are examined with regard to the direction of the exercise-physical self relationship and motivation for exercise. Arguments for the relevance of exercise and PSP for practitioners in promoting general mental well-being and preventing modern-day diseases are outlined.

In modern society, individuals constantly pass judgments on their own body and physical competence as well as that of other people. All too often, the verdict is less favourable. For the person, these physical self-perceptions (PSP) may negatively affect global self-esteem, identity, and general mental well being. The overall aim of this thesis is to examine primarily the role that exercise, but also the roles that gender and culture, play in the formation of PSP. In Study I, using confirmatory factor analyses, strong support for the validity of a first-order, and a second-order hierarchical and multidimensional model of the Physical Self-Perception Profile (PSPP: Fox &amp; Corbin, 1989) was found across three national samples (Great Britain, Sweden and Turkey) of university students. Cross-cultural differences were detected, with the British sample demonstrating higher latent means on all PSPP subdomains except for the physical condition subdomain (Condition), than the Swedish and Turkish samples. In Study II, a higher self-reported exercise frequency was associated with more positive PSP (in particular for Condition) and more importance attributed to PSP in Swedish university students. Males demonstrated higher overall PSPP-scores than females. In Study III, a true-experimental design with randomisation into an intervention and a control group was adopted. Strong support for the effects of an empowerment-based exercise intervention programme on PSP and social physique anxiety (SPA) over six months for adolescent girls was found. The relations of exercise, gender and culture with PSP, SPA and self-esteem are discussed from the standpoints of a variety of theoretical models (the EXSEM-model), and frameworks (self-presentation and objectification theory). The two theories of self-enhancement and skill-development are examined with regard to the direction of the exercise-physical self relationship and motivation for exercise. Arguments for the relevance of exercise and PSP for practitioners in promoting general mental well-being and preventing modern-day diseases are outlined.

The primary purpose of this study was to determine if changes in physical self-efficacy, physical self-perceptions, and affect (including enjoyment) are mechanisms by which a single bout of exercise improves state body image. A secondary purpose was to identify how long exercise-related improvements in state body image are sustained post-exercise. Sixty women with body image dissatisfaction were randomized to either an exercise or control condition. Participants in the exercise condition completed a 30 minute moderate-to-vigorous intensity workout on a stationary bike. Women in the control condition read for the same duration. Before and immediately, 10-minutes and 20-minutes after (post-0, post-10, post-20) the exercise/control manipulations, participants completed measures of state body image, aerobic self-efficacy, physical self-perceptions and affect (including enjoyment). PROCESS macro was used to test mediation models, and a repeated measures mixed ANCOVA, followed by a univariate ANCOVA was used to test how long state body image improvements were sustained. There was a significant indirect effect of increases in strength self-perceptions on state body image improvements from pre- to post-0 (95% C.I. =.07 - .52, κ2=.16, abps=.31), post-10 (95% C.I.=.05 - .50, κ2=.16, abps=.30) and post-20 minutes (95% C.I. = .10 - .55, κ2 =.16, abps =.33), as well as a significant indirect effect of decreases in tiredness (i.e., increases in the energetic arousal dimension) on state body image improvements from pre- to post-10 (95% C.I. =.22 – 1.14, κ2=.30, abps=.77). Exercise-related state body image improvements were sustained 20 minutes after exercise. The present findings suggest that a bout of exercise improves state body image through increases in strength self-perceptions and energetic arousal and these effects lasted up to 20 minutes. This is the first study to design and empirically test a model to account for the effects of exercise on state body image, and provides important theoretical and practical implications. / Thesis / Master of Science (MSc)

The general purpose of this research was to investigate physical activity levels as a correlate of selected aspects of psychological health among pregnant women. Specifically, the aims of the study were (1) to provide a cross-sectional description of changes in physical self-concept, mood, and perceived stress during pregnancy; (2) to evaluate physical activity patterns of pregnant women over time during pregnancy; and (3) to determine if there is a difference between physical activity and physical self-concept, mood, perceived stress and/or burnout symptoms during pregnancy. Participants were pregnant women from various antenatal clinics at King Edward Memorial Hospital. The women completed a questionnaire package containing questions on physical activity levels and measures of physical self-concept, social physique anxiety, perceived stress, mood and burnout symptoms. A series of ANOVAs was used to provide a descriptive profile of how these psychological variables change during the course of pregnancy. Significant time-related differences were found for the perceived health subscale of the PSDQ and the tension subscale for the BRUMS. Findings also suggested a significant association between physical activity, and physical self-perceptions, most importantly self-esteem. Higher levels of physical activity were also found to be closely related to positive mood states, lower levels of perceived stress and fewer burnout symptoms. No significant association was found between physical activity and social physique anxiety.