Effects of a 6-week aerobic dance intervention on body image and physical self-perceptions in adolescent girls

Research examining the impact of physical activity on body image dissatisfaction and physical self-perceptions has been both limited and equivocal. The current research investigated the effects of 6-week aerobic dance on these variables with 50 British schoolgirls aged 13–14 years. A cross-over design was used with two equivalent groups taught normal physical education and aerobic dance in a different order. The Body Attitude Questionnaire (BAQ) and Children and Youth Physical Self-Perception Profile (CY-PSPP) were administered as pre, mid and post-test to each participant in each group before the first intervention, at the change over and after 12 weeks. The results of this study revealed that participation in 6 weeks of aerobic dance significantly reduced body image dissatisfaction (Attractiveness, Feeling Fat, Salience and Strength and Fitness) and enhanced physical self-perceptions (Body Attractiveness and Physical Self-Worth), although these improvements were not sustained. The implications and future research directions are discussed.     

Expressive writing promotes self‐reported physical,social and psychological health among Chinese undergraduates

The present study examines the efficacy of expressive writing among Chinese undergraduates. The sample comprised of 74 undergraduates enrolled in a 9‐week intervention (35 in experimental class vs. 39 in control class). The writing exercises were well‐embedded in an elective course for the two classes. The 46‐item simplified Chinese Self‐Rated Health Measurement Scale, which assesses psychological, physical and social health, was adopted to measure the outcome of this study. Baseline (second week) and post‐test (ninth week) scores were obtained during the classes. After the intervention on the eighth week, the self‐reported psychological, social and physical health of the experimental class improved. Psychological health obtained the maximum degree of improvement, followed by social and physical health. Furthermore, female participants gained more psychological improvement than males. These results demonstrated that the expressive writing approach could improve the physical, social and psychological health of Chinese undergraduates, and the method can be applied in university psychological consulting settings in Mainland China.     

Predictors of cancer survivors’ response to a community-based exercise program

ObjectiveTo explore the degree to which sociodemographic (i.e., age, sex, ethnicity, weight status, vocational status, marital status), medical (i.e., stage of cancer, treatment status, comorbidity burden), functional (i.e., self-rated health, exercise capacity), cognitive (i.e., exercise self-efficacy beliefs), and behavioural (i.e., program adherence, extra-curricular exercise) factors predicted cancer-related fatigue and quality of life among 224 cancer survivors who participated in the community-based Wellspring Cancer Exercise Program (WCEP).DesignProspective, quasi-experimental single-group repeated measures design.MethodData on predictors and outcomes were collected using self-report and objective measures upon enrollment in the program (week 0), every 10 weeks until program completion (weeks 10, 20, 30), and at 16-weeks follow-up (46 weeks). Data were analyzed using multilevel modeling.ResultsIn general, participants who were working or transitioning to work, rated their health better, and had higher exercise self-efficacy beliefs had lower cancer-related fatigue, and those who rated their health better and had higher exercise self-efficacy beliefs had higher quality of life. Also, there was a significant interaction between time and exercise self-efficacy beliefs for cancer-related fatigue and quality of life such that greater improvements were observed among participants with higher exercise self-efficacy beliefs.ConclusionCancer survivors’ perceptions of their health and their ability to exercise should be fostered to ensure they respond positively to exercise programs in terms of cancer-related fatigue and quality of life.     

Personality and self-determination of exercise behaviour

There is extensive evidence that personality traits are associated with health-related behaviours, but less evidence regarding the underlying mechanisms. In this study, we examined the relationships between personality and self-determination of exercise behaviour. Users of a sports centre completed personality scales (the NEO Five Factor Inventory supplemented with the Eysenck Personality Questionnaire Psychoticism scale) and exercise self-determination scales (Behavioural Regulation in Exercise Questionnaire which measures extrinsic, introjected, identified and intrinsic forms of regulation). Analyses were restricted to 182 individuals in the maintenance stage of exercise participation. Partial correlation analysis was used to examine the relationships between each personality scale and the self-determination scales, controlling for other personality scales, gender and age. Neuroticism was associated with more introjected regulation, extraversion with more identified and intrinsic regulation, openness with less external regulation, conscientiousness with less external regulation and more intrinsic regulation, and psychoticism with more external regulation. Relating these findings to self-determination theory (Deci & Ryan, 2000), it is speculated that extraverted individuals are able to feel self-determined because exercise can satisfy the need for relatedness, conscientious individuals because exercise can satisfy the need for competence. Furthermore, conscientious individuals may have greater wherewithal to advance along the continuum of behavioural regulation.     

Assessment of tripartite efficacy beliefs within school-based physical education: Instrument development and reliability and validity evidence

Objectives

In educational contexts, Lent and Lopez (2002) proposed that students develop a tripartite network of efficacy beliefs, comprising their confidence in their own capabilities (i.e., self-efficacy), their confidence in their teacher’s ability (i.e., other-efficacy), and their estimation of their teacher’s confidence in their ability (i.e., relation-inferred self-efficacy). In spite of the potential for school-based physical education (PE) to stimulate leisure-time activity patterns among adolescents, it is noteworthy that this framework has yet to be explored in school PE contexts.

Design and methods

In Phase 1, we recruited 62 Australian high school students (aged 11-13) in order to develop instruments designed to assess self-efficacy, other-efficacy, and relation-inferred self-efficacy within PE settings. In Phases 2 and 3, we sought to provide evidence for measurement reliability, validity, and invariance with cross-sectional and prospective data derived from Australian (N = 602, M_age = 13.54, SD = .76) as well as Singaporean (N = 606; M_age = 14.10, SD = 1.01) students.

Results

Results revealed (a) support for the factorial validity of these measures in both locations, (b) evidence of gender-related and cross-national measurement invariance, (c) positive inter-relationships between students’ tripartite efficacy perceptions that were consistent with theory, and (d) positive correlations with key in-class (e.g., effort, enjoyment) and leisure-time (e.g., physical activity levels) outcomes.

Conclusions

Taken together, the results provide preliminary evidence for the reliability and validity of measures derived from these tripartite efficacy instruments, and support their use in future research designed to examine PE engagement.     

How are physical literacy interventions conceptualized? – A systematic review on intervention design and content

The concept of physical literacy (PL) has gained increasing attention over the last decade and posits that individuals value and take responsibility for engagement in physical activities for life through (a) motivation/confidence, (b) physical competence, and (c) knowledge/understanding. There is a mounting number of articles that have recently transformed the conceptual ideas of PL into interventions. The goal of this pre-registered (PROSPERO CRD42020188926) systematic review was to analyze and summarize PL interventions in terms of design and content. A total of 18 databases were searched drawing on the 2020 preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. Inclusion criteria were English language, publication by November 2020, and interventions based on or inspired by PL. Articles that met these criteria were analyzed in relation to basic delivery characteristics, theoretical foundations, study objectives, intervention content, and potential links between the PL domains (a-c) and content. The multiphase screening process with two independent raters yielded 44 eligible interventions across 46 articles. The analyses of the review demonstrated that the majority of interventions were conducted on children or adolescents and in countries with higher economic development. While 77.3% of the interventions adopted a holistic understanding of PL, only 38.6% formulated study goals or intervention content to cover all the core PL domains. Importantly, only 25.0% of the interventions showed substantial links between PL domains and intervention content and can thus be classified as theory-based. Taken together, most interventions targeted aspects of physical competence (84.1%), whereas knowledge/understanding (59.1%) and motivation/confidence (47.7%) were often neglected. Therefore, future interventions should commit to systematically address all domains of PL simultaneously. PL interventions exposed weaknesses in reporting delivery characteristics and content. Finally, a model is suggested which assumes that practical PL efforts may better harmonize with PL theory and conception if they cultivated a tight interlocking with the three core domains of PL at all stages of the intervention process.     

Biological and psychological predictors of heart rate patterns during physical activity

ObjectiveLatent class modeling (LCM) offers a promising approach for examining correlates of heart rate (HR) patterns over multiple exercise sessions. This research examined biological and psychological variables associated with different patterns of HR response to physical activity (PA).MethodsIn a three-arm randomized controlled trial (exercise video games vs. standard exercise vs. non-exercise control), HR was recorded during PA sessions over a 12-week period. LCM identified three patterns of HR during PA across 189 participants in active arms: 1) high HR across sessions with low variability within sessions, 2) linear increase in HR across sessions with low variability within sessions, and 3) high variability in HR across all sessions. Associations with biological (resting heart rate, blood pressure, BMI, age, cholesterol, triglycerides, HbA1c) and psychological (depression, motivations for PA, PA-induced feelings) predictors of latent class membership were iteratively tested.ResultsPsychological variables played as important a role in the final model as biological variables for predicting latent class membership. Few differences were found between LC1 and LC2, but LC3 differed from the other two groups in that participants were likelier to report that they feel revitalized after PA (vs. LC1 and LC2), to be less motivated for PA (vs. LC1), reported greater depression (vs. LC1 and LC2), and were younger (vs. LC1).ConclusionsThese findings demonstrate the potential of LCM to identify biological and psychological factors associated with chronotropic responses to PA, and advance understanding of the role of psychological factors in chronotropic PA outcomes.     

The leg-to-body ratio as a human aesthetic criterion

There are surprisingly few empirical studies on the aesthetic appeal of human legs, examining such variables as length or shape. The human legs are conspicuous in erotic contexts, but few studies have experimentally tested preferences for longer legs. This study examined the utility of the human leg-to-body ratio (LBR) as a specific aesthetic criterion among 71 British undergraduates. Participants rated for physical attractiveness line drawings that varied in five levels of LBR. The results showed that a longer LBR was preferred as maximally attractive in women, whereas a shorter LBR was preferred in men. Evolutionary psychological and socio-cultural explanations for this aesthetic preference are discussed, and the study's limitations are considered.     

Body image across the adult life span: stability and change

By far, the majority of studies investigating body image in adults have drawn samples from college populations within a very narrow age range. The purpose of the present paper is to review empirical research on the body image of adults older than the typical college student. There are marked changes in appearance across the adult life span, especially for women, which lead to the expectation of concomitant changes in body image. In fact, the review found that body dissatisfaction was remarkably stable across the adult life span for women, at least until they are quite elderly. In contrast, the importance of body shape, weight and appearance decreased as women aged, underscoring an important distinction between evaluation and importance of the body. However, there are many large gaps and limitations in the current literature that will need to be addressed before a more complete understanding of the development of body image across the adult life span is achieved.     

Developmental differences in motor task integration: A test of Pascual-Leone's Theory of Constructive Operators

This study assessed the ability of Pascual-Leone's Theory of Constructive Operators to predict the minimum age or maturational level at which integration of a motor task could be achieved. Children 5–12 years of age (n=114) performed a discrete motor task requiring a constrained circular movement to be integrated with an unconstrained linear movement to a target. The Theory of Constructive Operators and the principles of constructive cognition were used to generate a model of task performance. Based on the model and in accordance with the theory, it was predicted that 5- to 6-year-old subjects would lack the cognitive capacity (M-capacity) to efficiently integrate this task. An analysis of covariance for age was performed on task parameters reflecting integration (and highest M-demand) with movement speed as the covariate. Scheffé contrasts supported the prediction as 5- to 6-year-old subjects were inferior to each of the other age groups (p < .05). Furthermore, no significant differences were found to exist between any of the older age groups.