The state mindfulness scale for physical activity: further psychometrics properties / Escala de estado de mindfulness para atividade física: novas propriedades psicométricas / Escala de mindfulness en la actividad física: nuevas propiedades psicométricas

Mindfulness has been defined as attention and awareness to the present with an attitude of openness, non-judgment, and acceptance. It is suggested that mindfulness can positively influence experiences in sports and physical activity, increasing adherence to these activities. This study aimed to examine new psychometric properties of the State Mindfulness Scale for Physical Activity (SMS-PA) using classical and modern testing theories among Brazilian sport and exercise practitioners. Two studies were conducted. In the first, with 617 Brazilian sports practitioners, confirmatory factor analysis supported the bifactor structure of the SMS-PA composed of two specific (mental and body mindfulness) and one general factor (state mindfulness), which did not vary among genders. The Rasch Rating Scale Model (RSM) supported essential one-dimensionality indicated by the general factor with good item fit statistics (infit/outfit 0.62-1.27). The model presented a good level of Rasch reliability (0.85), and the items difficulty estimation provided an understanding of the continuum represented by their content. In the second study, with 249 Brazilian exercise practitioners, the structural equation modeling showed that Body Mindfulness was associated with positive outcomes (positive affect and satisfaction with practice). The mediation analysis showed that people with higher levels of Body mindfulness tend to experience greater levels of Positive Affect and, consequently, greater Satisfaction with exercises. The results suggest that the Brazilian version of the SMS-PA is an appropriate measure of the state of mindfulness.(AU)

Mindfulness pode ser definido como atenção e consciência no momento presente com uma atitude de abertura, não julgamento e aceitação. A literatura sugere que o mindfulness pode influenciar positivamente experiências no esporte e atividade física e pode exercer um papel na adesão a essas atividades. Este estudo teve como objetivo investigar novas propriedades psicométricas da State Mindulness Sacale for Physical Activity (SMS-PA) utilizando as teorias clássicas e modernas dos testes em praticantes de exercício físico e esporte brasileiros. Dois estudos foram conduzidos. No primeiro, com 617 brasileiros praticantes de esporte, a Análise Fatorial Confirmatória (AFC) demonstrou adequação à estrutura bifatorial da SMS-PA composta por dois fatores específicos (mindfulness mental e físico) e um fator geral (estado de mindfulness), que apresentou invariância entre sexos. A Rasch Rating Scale Model (RSM) corroborou a unidimensionalidade essencial indicada pelo fator geral com bons índices de ajustes (infit/outfit 0.62 -1.27). O modelo apresentou bom nível de precisão Rasch (.85), e a estimação de dificuldade dos itens possibilitou compreensão do continuum representado pelo conteúdo dos itens. No segundo estudo, com 249 brasileiros praticantes de esporte, a Modelagem de Equações Estruturais demonstrou que o mindfulness físico esteve associado a afetos positivos e satisfação com a prática. A análise de mediação mostrou que pessoas com níveis altos de mindfulness físico tendem a apresentar níveis mais elevados de afeto positivo e, consequentemente, níveis mais elevados de satisfação com a prática. Os resultados sugerem que a versão brasileira do SMS-PA é uma medida apropriada do estado de mindfulness para atividades físicas.(AU)

La atención plena puede definirse como la atención y la conciencia en el momento presente con una actitud de apertura, no juicio y aceptación. La literatura sugiere que el mindfulness puede influir positivamente en las experiencias en el deporte y en la actividad física, además de desempeñar un papel en la adherencia a estas actividades. Este estudio tuvo como objetivo investigar nuevas propiedades psicométricas de la State Mindfulness Scale for Physical Activity (SMS-PA) utilizando las teorías clásicas y modernas de las pruebas en practicantes de ejercicio físico y de deporte en Brasil. Para ello, se realizaron dos estudios. En el primer, participaron 617 practicantes de deporte brasileños, y el análisis factorial confirmatorio (AFC) demostró adecuación en la estructura bifactorial de la SMS-PA, compuesta por dos factores específicos (mindfulness mental y físico) y un factor general (estado de mindfulness), que mostró invarianza entre sexos. El Rasch Rating Scale Model (RSM) corroboró la unidimensionalidad esencial indicada por el factor general con buenos índices de ajuste (infit/outfit 0,62-1,27). El modelo mostró un buen nivel de precisión de Rasch (.85), y la estimación de la dificultad de los ítems permitió comprender el continuo representado por el contenido de estos. En el segundo estudio, con 249 practicantes de deporte, el modelo de ecuaciones estructurales mostró que el mindfulness físico estaba asociado a resultados positivos (afecto positivo y satisfacción con la práctica). El análisis de mediación reveló que las personas con altos niveles de mindfulness físico tendían a tener mayores niveles de afecto positivo y, en consecuencia, mayores niveles de satisfacción con la práctica. Los resultados sugieren que la versión brasileña de la SMS-PA es una medida adecuada de mindfulness.(AU)

A negative body image contextualization of the self-compassion scale.

Self-compassion, a style of responding to oneself in times of suffering, is typically measured as a general tendency for how one normally responds using the Self-Compassion Scale (SCS; Neff, 2003). A contextualized adaptation to the SCS could provide a new understanding of how one responds to suffering by providing a standard frame of reference, is more likely to be more predictive of context outcomes, and reduces intraindividual variance (Baird & Lucas, 2011). How a contextualized assessment of self-compassion compares to the original assessment using parallel measures is unknown. The purpose of this study was to explore the use of a modified SCS adapted for the context of responding to the experience of negative body image (BI-SCS). There were 468 participants who completed the SCS and then wrote about a specific negative body image experience (to prime a negative body image experience) before they completed a modified SCS and related constructs. Confirmatory Factor Analysis supported a bi-factor structure consistent with SCS. Correlations with body image outcomes were stronger for the majority of BI-SCS scores compared to the SCS. Unique explained variance of the BI-SCS supported incremental validity. Results show promising initial evidence supporting the use of the BI-SCS for body-related outcomes.

Body image and eating behaviors: A latent profile analysis.

Body image is multidimensional and less is known about how the combination of positive and negative body image relates to eating behaviors. We used a person-centered approach to identify profiles of body image and explore the relationship between profile membership, sex, age, race, and current marital status, and eating behaviors in a community sample of adults. We recruited 288 adults 18 and older living in the United States using Prolific Academic. Participants completed an online survey assessing body appreciation, functionality appreciation, body dissatisfaction, weight bias internalization, and adaptive and maladaptive eating behaviors. We used latent profile analysis to identify four distinct body image profiles: appreciation & mild dissatisfaction, functional appreciation & moderate dissatisfaction, strong dissatisfaction, and strong appreciation. Profile membership differed by sex with more women and younger adults in profiles higher in negative body image. The relationships between profiles and eating behaviors differed; the three profiles including negative body image had the lowest adaptive and highest maladaptive eating behaviors. The identification of clinically relevant profiles: (1) confirm positive and negative body image coexist, (2) identify high- and low-risk profiles of body image and eating behavior, and (3) offer preliminary suggestions for screening and tailoring preventive interventions.

Associations between body image, eating behavior, and diet quality.

Background: Weight-neutral interventions that promote adaptive eating behaviors are becoming a growing area of practice. Understanding whether adaptive eating behaviors are associated with improved diet quality is essential. Body image may be an important factor in this relationship given its close connection to eating behaviors. Aim: The purpose of this study was to develop an understanding of the relationships between positive and negative body image, adaptive and maladaptive eating behaviors, and diet quality. Methods: We recruited 288 adults 18 years and older who were living in the US using Prolific Academic. Participants completed an online survey including measures of positive and negative body image, adaptive and maladaptive eating behaviors, and a dietary screener questionnaire (DSQ). We ran a hierarchical linear regression and tested whether body image and diet quality were mediated by eating behavior. Results: Body image and maladaptive eating behaviors were not associated with diet quality. Body-food choice congruence (B-FCC), an adaptive eating behavior, was associated with diet quality. B-FCC mediated the relationship of positive and negative body image to diet quality. Conclusions: Our findings provide additional support for weight-neutral or adaptive eating interventions as a mechanism to promote diet quality. Additional research may benefit from exploring indirect effects of body image on diet intake, the relationship between eating behavior and diet quality using qualitative data, and the comparison of weight-neutral or non-diet interventions with traditional behavior change interventions.

Communication About Food and Nutrition in the Parent Child Dyad.

PURPOSE: Developmentally appropriate messaging interventions may be an effective way to promote healthy behaviors in young children. However, there is a gap in the literature describing communication about food and nutrition within the parent-child dyad. Thus, we explored the content, frequency, context, and purpose of parental conversations about food and nutrition. DESIGN: Using a semi-structured interview guide, 20 in-person interviews were conducted with parents of 3 to 9 year old children living in Washington and Oregon at the location of their choice. METHODS: Qualitative data was analyzed using open coding and grounded theory. RESULTS: Three categories described communication within the dyad: purpose, content, and the bidirectional interaction between the parent and the child. Purpose included three themes: consumption, variety, and balance. Content included three themes: food-related content, body-related content, and utilizing connections. Subthemes within food-related content included properties, production, and preparation. Body-related content subthemes were utilization of food in the body and interoceptive awareness. Parents highlighted connections between the food and body-related content. Lastly, parent-child conversations about food and nutrition were dynamic and bidirectional with parents adapting to child factors. CONCLUSION: Our findings provide a description of parent communication about food and nutrition and suggest investigation of the purpose and content of communication and how parents tailor messages to their child.

Intuitive eating and dietary intake.

Intuitive eating has been associated with positive health benefits, yet the research investigating intuitive eating with dietary intake is minimal, inconsistent, and may differ by sex and food security status. The purpose of this study is to identify relationships between intuitive eating and dietary intake in adults living in the US and explore differences by sex and food insecurity status. We recruited 308 adults 18 years and older living in the US to complete an online survey including demographic data, intuitive eating, a diet screener questionnaire, and food insecurity status. We used structural equation modeling to analyze relationships between intuitive eating subscales, calcium, whole grains, added sugars, vegetables, and fruits. Then, we explored differences by sex and food security status. Unconditional permission to eat was associated with a higher intake of added sugar, while body-food choice congruence was associated with a lower intake of added sugar and calcium, and a higher intake of vegetables and whole grains. Eating for physical rather than emotional reasons was associated with a higher intake of calcium and vegetables. Intuitive eating differed by sex and food security status. While intuitive eating is not consistently related to the intake of more nutritious foods, eating for physical rather than emotional reasons and body-food choice congruence may promote diet quality in a community sample. Men and food secure adults scored higher in intuitive eating suggesting tailored intuitive eating interventions may be essential to increase effectiveness.

A qualitative study exploring middle-aged women's experiences with yoga.

The purpose of this study was to explore how yoga impacts body-related thoughts, feelings, perceptions and attitudes, well-being, and self-care behaviors in a sample of middle-aged women who regularly engage in yoga in their communities. The sample included 22 women; 10 self-identified as beginners or novices and 12 self-identified as experienced in yoga. Interpretive phenomenological analysis guided the data collection, analysis, and interpretation. Four key themes were identified around the topics of: supportive yoga environment, mindfulness, self-care behaviors, and body-related perceptions. Results highlight potential elements of yoga that can support positive body-related experiences in middle-aged women.

Health Behaviors at the Onset of the COVID-19 Pandemic.

Objectives: We examined perceived behavior change since implementation of physical distancing restrictions and identified modifiable (self-rated health, resilience, depressive symptoms, social support and subjective wellbeing) and non-modifiable (demographics) risk/protective factors. Methods: A representative US sample (N = 362) completed an online survey about potential risk/protective factors and health behaviors prior to the pandemic and after implemented/recommended restrictions. We assessed change in perceived health behaviors prior to and following introduction of COVID-19. We conducted hierarchical linear regression to explore and identify risk/protective factors related to physical activity, diet quality, and social isolation. Results: There have been substantial decreases in physical activity and increases in sedentary behavior and social isolation, but no changes in diet quality since COVID-19. We identified modifiable and non-modifiable factors associated with each health behavior. Conclusions: Negative effects indicate the need for universal intervention to promote health behaviors. Inequalities in health behaviors among vulnerable populations may be exacerbated since COVID-19, suggesting need for targeted invention. Social support may be a mechanism to promote health behaviors. We suggest scaling out effective health behavior interventions with the same intensity in which physical distancing recommendations were implemented.

Introduction to the special issue on yoga and positive embodiment: a note from the editors on how we got here.

Studying the practice of yoga and its relationship to body image, embodiment, and eating disorders brings together the professional and personal aspects of our lives as yoga practitioners, researchers, and women living in bodies within a society that can be tough on body appreciation. Developing this edition on "Yoga for positive embodiment in eating disorder prevention and treatment" has been a work of love for all of us. As yoga practitioners, we have personally experienced the benefits of yoga in our own bodies and felt that there may be benefits for others. As researchers, we are dedicated to the exploration and utilization of evidence-based practices to enhance well-being, promote a positive body image and sense of embodiment, and both prevent and treat eating disorders. Our experiences as yoga practitioners, in conjunction with our curiosity as researchers, led us to explore the extant evidence for yoga as a tool for leading to improvements in body image, disordered eating behaviors, and eating disorders, and to embark on our own research in this area to fill necessary gaps in our knowledge base. Our long-term dedication to the fields of body image and eating disorders, in conjunction with our emerging interest in yoga as a potential tool, led us to the compilation of this edition on yoga and positive embodiment.

Future directions for research on yoga and positive embodiment.

This article provides the concluding thoughts on the special issue, Yoga for Positive Embodiment in Eating Disorder Prevention and Treatment, which illustrate the progress being made on the relationship between yoga practice and the different indicators of positive embodiment that is relevant for the prevention and treatment of eating disorders. Based on the current body or work, we offer recommendations for the next steps for researchers for population-based, qualitative, and prevention and intervention research.

Motivation and exercise in rural postmenopausal women: A literature review.

PURPOSE: Most rural Americans are not meeting recommended guidelines for physical activity (PA); rural postmenopausal women (RPMW) have the highest inactivity rates. Self-Determination Theory, a motivational theory which examines the effects of qualitatively different types of motivation is used to conceptualize how RPMW make decisions regarding PA. The purpose of this review is to examine published literature related to motivation and exercise or PA in RPMW. The research questions include (a) what is known about the relationship of motivation to exercise in RPMW; and (b) how have motivation and exercise been measured in RPMW? METHODS: An electronic database search resulted in a sample of 251 articles, with an additional 9 articles acquired by scanning reference lists. Search terms included motivation, exercise, rural women, urban women, and PA. Criteria for inclusion were postmenopausal women, primary research published before 2019, reported in English, and taking place in the United States. FINDINGS: Thirteen articles involving RPMW were included. The sample contained four qualitative, eight quantitative, and one mixed-method studies. There is little research regarding motivation and PA in RPMW. Barriers and facilitators to PA have been measured. Motivation was mentioned in two studies but not measured. PA is most often measured with self-report questionnaires. CONCLUSION: The decision to be active or sedentary is embedded in motivation. Additional research that objectively measures both motivation and PA in a consistent manner is required to provide a knowledge base regarding motivation and PA behavior in RPMW.

A conceptual model describing mechanisms for how yoga practice may support positive embodiment.

Yoga practice has been associated with various indices of positive embodiment in correlational and intervention studies. Yet, systematic, theoretically-grounded models detailing specific mechanisms by which yoga supports positive embodiment are lacking. In this article, we present a conceptual model that describes mechanisms (i.e., mediators and moderators) that can be used to guide research to help answer how, for whom, and under what conditions yoga practice may promote positive embodiment. Based on existing theoretical frameworks and empirical findings, this model suggests that (a) yoga practice may cultivate embodying experiences during yoga (e.g., state mindfulness), (b) these embodying experiences may build stable embodying experiences that generalize beyond the yoga context (e.g., trait mindfulness), and (c) these stable embodying experiences may then promote embodying practices (e.g., mindful self-care). This mediational chain is likely moderated by the yoga context (e.g., instructional focus, presence of mirrors, diversity of bodies represented) and yoga practitioners' social identities (e.g., body size, physical limitations), social and personal histories (e.g., experiences with weight stigma and trauma), and personality traits and motives (e.g., body comparison, appearance-focused motives to practice yoga). Using the structure of this conceptual model, we offer researchers ideas for testable models and study designs that can support them.

Examining the effects of mindfulness-based yoga instruction on positive embodiment and affective responses.

Empirical evidence provides support for the inclusion of yoga as part of eating disorder prevention efforts through its positive impact on positive embodiment and experience of positive core affect. However, there is a need to identify the specific instructional strategies that will more consistently support positive embodiment and positive affect. We examined the effect of teaching a single yoga class using mindfulness-based instruction compared to appearance-based and neutral instruction alternatives on embodiment (i.e., state body surveillance, state body appreciation, pleasure during yoga) and changes in affect from before to after class. Female participants (N = 62; M age = 23.89, SD = 6.86) were randomly assigned to a yoga class that emphasized: being mindfully present in one's body, changing one's appearance, or just getting into yoga poses. ANOVAs revealed significantly higher body surveillance (ηp 2 =.10) and lower forecasted pleasure (ηp 2 =.21) in the appearance class compared to the other two classes. Participants in the mindfulness class experienced greater improvement in affect (ηp 2 =.08) from before to after class and higher remembered pleasure during the yoga class (ηp 2 =.19) compared to those in the appearance class. Emphasizing changes to appearance in yoga instruction may place participants at risk for less positive affect and less positive experiences of embodiment compared to mindfulness-based or even neutral yoga instruction.

Transcatheter aortic valve replacements alter circulating serum factors to mediate myofibroblast deactivation.

The transcatheter aortic valve replacement (TAVR) procedure has emerged as a minimally invasive treatment for patients with aortic valve stenosis (AVS). However, alterations in serum factor composition and biological activity after TAVR remain unknown. Here, we quantified the systemic inflammatory effects of the TAVR procedure and hypothesized that alterations in serum factor composition would modulate valve and cardiac fibrosis. Serum samples were obtained from patients with AVS immediately before their TAVR procedure (pre-TAVR) and about 1 month afterward (post-TAVR). Aptamer-based proteomic profiling revealed alterations in post-TAVR serum composition, and ontological analysis identified inflammatory macrophage factors implicated in myofibroblast activation and deactivation. Hydrogel biomaterials used as valve matrix mimics demonstrated that post-TAVR serum reduced myofibroblast activation of valvular interstitial cells relative to pre-TAVR serum from the same patient. Transcriptomics and curated network analysis revealed a shift in myofibroblast phenotype from pre-TAVR to post-TAVR and identified p38 MAPK signaling as one pathway involved in pre-TAVR-mediated myofibroblast activation. Post-TAVR serum deactivated valve and cardiac myofibroblasts initially exposed to pre-TAVR serum to a quiescent fibroblast phenotype. Our in vitro deactivation data correlated with patient disease severity measured via echocardiography and multimorbidity scores, and correlations were dependent on hydrogel stiffness. Sex differences in cellular responses to male and female sera were also observed and may corroborate clinical observations regarding sex-specific TAVR outcomes. Together, alterations in serum composition after TAVR may lead to an antifibrotic fibroblast phenotype, which suggests earlier interventions may be beneficial for patients with advanced AVS to prevent further disease progression.

Performance Evaluation of Non-GPS Based Localization Techniques under Shadowing Effects.

Non-GPS localization has gained much interest from researchers and industries recently because GPS might fail to meet the accuracy requirements in shadowing environments. The two most common range-based non-GPS localization methods, namely Received Signal Strength Indicator (RSSI) and Angle-of-Arrival (AOA), have been intensively mentioned in the literature over the last decade. However, an in-depth analysis of the weighted combination methods of AOA and RSSI in shadowing environments is still missing in the state-of-the-art. This paper proposes several weighted combinations of the two RSSI and AOA components in the form of pAOA + qRSSI, devises the mathematical model for analyzing shadowing effects, and evaluates these weighted combination localization methods from both accuracy and precision perspectives. Our simulations show that increasing the number of anchors does not necessarily improve the precision and accuracy, that the AOA component is less susceptible to shadowing than the RSSI one, and that increasing the weight of the AOA component and reducing that of the RSSI component help improve the accuracy and precision at high Signal-to-Noise Ratios (SNRs). This observation suggests that some power control algorithm could be used to increase automatically the transmitted power when the channel experiences large shadowing to maintain a high SNR, thus guaranteeing both accuracy and precision of the weighted combination localization techniques.

Exploring changes in mindfulness and body appreciation during yoga participation.

Evidence supports the positive role that yoga participation can play in predicting positive body image experiences. However, less is known about the mechanisms that might explain this relationship. The purpose of this study was to test for change in state and trait mindfulness and body appreciation as well as the relationship between change in trait mindfulness and change in body appreciation across 16 weeks of yoga participation. Participants (N = 376; Mage = 20.45; 87% female) were recruited from for-credit yoga classes at a university. They completed measures of trait mindfulness and body appreciation at the beginning, mid-point, and end of the 16-week course. They also completed a measure of state mindfulness of the body that targeted their experience during yoga every other week after class. Latent growth curves were estimated for each variable and demonstrated significant (p < .001) positive change in trait mindfulness and body appreciation. The full structural model showed that the rate of change in trait mindfulness associated positively with the rate of change in body appreciation. This significant relationship supports the role that mindfulness may play in supporting growth in positive body image during yoga participation.

The roles of self-compassion, body surveillance, and body appreciation in predicting intrinsic motivation for physical activity: Cross-sectional associations, and prospective changes within a yoga context.

Engaging in physical activity for the immediate internal experiences it brings (e.g., pleasure, satisfaction) is critical for long-term exercise adherence. Investigations of how factors such as body image contribute to intrinsic motivation for physical activity are needed. The present study examined body surveillance and body appreciation as mediators of the relationship between self-compassion and intrinsic motivation for physical activity cross-sectionally and prospectively. One sample of college women completed measures of study variables at one time point (Sample 1; N = 269, Mage = 19.96) and a second sample did so during Weeks 1, 8, and 16 while participating in a 16-week yoga course (Sample 2; N = 323, Mage = 20.31). In Sample 1, latent variable structural equation modeling supported body appreciation as a mediator between self-compassion and intrinsic motivation for physical activity. In Sample 2, latent growth curve analyses revealed that change in self-compassion predicted changes in body surveillance and body appreciation in expected directions. Further, change in body appreciation positively predicted change in intrinsic motivation. Targeting self-compassion and body appreciation may help support women's intrinsic motivation for physical activity.

Mindfulness and Affective Responses to Treadmill Walking in Individuals with Low Intrinsic Motivation to Exercise.

An aversion to the sensations of physical exertion can deter engagement in physical activity. This is due in part to an associative focus in which individuals are attending to uncomfortable interoceptive cues. The purpose of this study was to test the effect of mindfulness on affective valence, ratings of perceived exertion (RPE), and enjoyment during treadmill walking. Participants (N=23; Mage=19.26, SD = 1.14) were only included in the study if they engaged in no more than moderate levels of physical activity and reported low levels of intrinsic motivation. They completed three testing sessions including a habituation session to determine the grade needed to achieve 65% of heart rate reserve (HRR); a control condition in which they walked at 65% of HRR for 10 minutes and an experimental condition during which they listened to a mindfulness track that directed them to attend to the physical sensations of their body in a nonjudgmental manner during the 10-minute walk. ANOVA results showed that in the mindfulness condition, affective valence was significantly more positive (p = .02, ηp2 = .22), enjoyment and mindfulness of the body were higher (p < .001, ηp2 = .36 and .40, respectively), attentional focus was more associative (p < .001, ηp2 =.67) and RPE was minimally lower (p = .06, ηp2 =.15). Higher mindfulness of the body was moderately associated with higher enjoyment (p < .05, r =.44) in the mindfulness but not the control condition. Results suggest that mindfulness during exercise is associated with more positive affective responses.

A pilot yoga physical education curriculum to promote positive body image.

We examined the effects of a pilot yoga-based physical education (PE) curriculum by testing for change in trait body surveillance, physical self-worth, and body appreciation. Further, we examined the relationships among change in body image variables and the role of state mindfulness in predicting state body surveillance during classes. Adolescents participated in 12 weeks of yoga-based (n=20; Mage=16.45, 90% female) or traditional (n=23;Mage=14.52, 57% female) PE. Results showed significant (p=.004), moderate decreases in trait body surveillance and minimal nonsignificant (p=.11) increases in physical self-worth. Change in trait body surveillance was inversely related to change in physical self-worth and body appreciation in yoga participants. Multi-level modeling analyses revealed that more mindful students also surveyed their body less during class. Intentionally structured yoga participation may support positive body image among adolescents.

The Moderating Role of Physical Self-Perceptions in the Relationship Between Maturity Status and Physical Self-Worth.

PURPOSE: We tested the moderating role of physical self-perceptions in the relationship between physical maturity and physical self-worth (PSW). METHOD: Students in Grades 5 through 8 (N = 241; 57% females; Mage = 12.30 years) completed a questionnaire assessing physical self-perceptions (i.e., perceived sport competence, conditioning, strength, and body attractiveness), PSW, and maturity status. Hierarchical multiple regression was used to test interactions between maturity and physical self-perceptions predicting PSW separately for boys and girls. RESULTS: For girls, maturity level and physical self-perceptions explained significant variance, F(5, 131) = 73.44, p < .001, R(2) = .74, with interactions explaining a little extra variance, ΔF = 3.42, p = .01, ΔR(2) = .03. Perceived attractiveness interacted with maturity status to predict PSW (p = .01), indicating that maturity was positively related to PSW only for girls with higher body attractiveness. Maturity status and physical self-perceptions also significantly predicted PSW in boys, F(5, 98) = 46.52, p <  .001, R(2) = .70, with interactions explaining a little extra variance, ΔF = 3.16, p = .02, ΔR(2) = .04. A statistically significant interaction between perceived strength and maturity (p <  .001) indicated that maturity related positively to PSW, but only for boys with higher perceived strength. CONCLUSIONS: The maturity-PSW relationship differs by gender and depends partly on physical self-perceptions. This finding reinforces previous findings that illustrate the relative importance of perceived attractiveness and strength for girls and boys, respectively. PSW is an important predictor of physical activity behavior; therefore, it is critical to understand the interplay between these key antecedents.