Factor structure and psychometric properties of a Romanian translation of the drive for Muscularity Scale (DMS) in university men

Psychometric properties of an Arabic translation of the short 9-item drive for muscularity scale (DMS-9)

BACKGROUND

After the original 15-item Drive for Muscularity Scale developed by McCreary et al. in 2004, a more theoretically based scale that replicates the original DMS subscales with a better conceptual clarity and a shorter number of items, i.e., the DMS-9, has recently been developed by Chaba et al. in 2018. We sought to contribute to the literature especially under the Arab context, by investigating the psychometric properties of an Arabic translation of the DMS-9 in a sample of Arabic-speaking Lebanese university students of both genders.

METHODS

University students (N = 402; 55.2% females) from multiple universities in Lebanon were invited to fill the survey in this cross-sectional designed study (December 2022 and January 2023). Our sample was chosen using the snowball technique; a soft copy of the questionnaire was created using google forms software, and an online approach was conceived to proceed with the data collection.

RESULTS

Using an Exploratory Factor Analysis-to- Confirmatory Factor Analysis strategy, we found that the original two-factor model of the DMS proposed in the parent study was adequately replicated in our sample. The two DMS-9 factor scores showed very good McDonald's omega values (ω > 0.8). Findings also showed that gender invariance was achieved at the configural, metric, and scalar levels. Additionally, drive for muscularity scores correlated in the expected way with other study variables, providing support for the convergent and divergent validity of the Arabic DMS-9. Specifically, we found that greater drive for muscularity attitudes and behaviors significantly correlated with more severe muscle dysmorphic symptoms, inappropriate eating attitudes, muscle bias internalization, and lower body appreciation.

CONCLUSION

Findings preliminarily suggest that the Arabic DMS-9 is psychometrically sound and suitable tool to assess the drive for muscularity construct among Arabic-speaking community adults. Making the Arabic DMS-9 available will hopefully benefit the scientific community working in Arab settings, promote local and international research in this area, and offer descriptive data on how drive for muscularity may interfere with health indicators in the general Arab population.

Psychometric properties of a Romanian translation of the Acceptance of Cosmetic Surgery Scale (ACSS): An examination using bifactor exploratory structural equation modelling

The Acceptance of Cosmetic Surgery Scale (ACSS; Henderson-King & Henderson-King, 2005) is a widely used measure for the assessment of attitudes toward cosmetic surgery. Here, we examined the psychometrics of a novel Romanian translation of the ACSS. A total of 1275 Romanian adults (889 women, 386 men) completed the ACSS alongside additional, related measures. Exploratory factor analysis (EFA) with a first split-half subsample supported extraction of the original 3-factor model consisting of Intrapersonal, Social, and Consider dimensions. In a second split-half subsample, we found that a 3-factor bifactor exploratory structural equation model (B-ESEM) had superior fit compared to all alternative models that were tested. This B-ESEM representation had well-defined G-factor with adequate composite reliability, and its S-factors were also generally well-defined. Across subsamples, the optimal model showed strong or partial strong invariance across gender, with women having significantly higher latent means on the Consider factor relative to men. Evidence of convergent validity was also generally good in women, especially for the G-factor of the ACSS, but was attenuated in men. Overall, these findings indicate that the Romanian version of the ACSS has adequate psychometric properties. We also encourage scholars to consider B-ESEM representations of the ACSS in other national settings.

Confirmatory Factor and Measurement Invariance Analyses of the Drive for Muscularity Scale in Sexual Minority Men and Women

The Drive for Muscularity Scale (DMS) is a commonly used measure used to assess the pursuit of muscularity. However, the factor structure of this measure has yet to be confirmed in a sample of sexual minority women. Moreover, the invariance of this measure across gender has also yet to be explored. The aim of the present study was, therefore, to conduct a confirmatory factor analysis (CFA) of the DMS in samples of both cisgender sexual minority men and women, and subsequently evaluate the measurement invariance by gender. The sample consisted of 962 cisgender sexual minority young adult men (N = 479) and women (N = 483). A series of CFAs were conducted, assessing both the one-factor and two-factor solutions of the DMS, with and without the inclusion of item 10 ("I think about taking anabolic steroids"). Across cisgender sexual minority young adult men and women, the 14-item two-factor solution demonstrated most appropriate fit, although the 15-item two-factor solution was also adequate among only women. Measurement invariance analyses indicated that the 14-item two-factor DMS can be used in samples of both cisgender sexual minority men and women. The present study was novel in exploring the factor structure of the DMS in sexual minority women and measurement invariance by gender; however, future research is needed to further corroborate these findings and assess measurement invariance by sexual orientation and race.

The Muscularity-Oriented Eating Test, Drive for Muscularity Scale, and Muscle Dysmorphic Disorder Inventory among Chinese Men: Confirmatory Factor Analyses

Research on eating disorders (EDs) and body image disturbances has focused mostly on females from Western countries, and little is known about EDs in male populations in China, which is partially due to the lack of validated assessment measures. The current work aims to translate the Muscularity-Oriented Eating Test (MOET), Drive for Muscularity Scale (DMS) and Muscle Dysmorphic Disorder Inventory (MDDI) into Chinese and examine their psychometric properties. The factor structures, reliability and validity of the translated scales were examined with two samples: male university students (n = 295, M_age = 18.92 years) and general adult men (n = 406, M_age = 28.53 years). With confirmatory factor analyses, the original factor structures are replicated for the MOET, DMS and MDDI. The results also support the adequate internal consistency for both samples. Strong evidence of convergent and incremental validity for the three measures is also found in both samples. Overall, the three measures prove to be good instruments for use among Chinese male university students and general adult men.

Psychometric properties of a Romanian translation of the Functionality Appreciation Scale (FAS)

The Functionality Appreciation Scale (FAS; Alleva et al., 2017) is a 7-item measure of an individual's appreciation of their body for what it can do and is capable of doing. Although the instrument is increasingly used in interventionist studies, its psychometric properties have been infrequently investigated outside Anglophone populations. Here, we examined psychometric properties of a novel Romanian translation of the FAS. An online sample of 959 Romanian adults (18-73 years old) completed the Romanian FAS, and validated measures of positive body image (body appreciation), negative body image (weight discrepancy in women, drive for muscularity in men), eating disorder symptomatology, and psychological well-being (self-esteem, gratitude). Exploratory factor analyses led to the extraction of a 1-dimensional model of FAS scores, which we confirmed using confirmatory factor analysis. FAS scores achieved scalar invariance across sex, but the sex difference in latent FAS scores did not reach significance (d = 0.15). FAS scores had adequate internal consistency and test-retest reliability up to four weeks, and further analyses provided evidence of convergent, construct, and incremental validity. These results support the psychometric properties of the Romanian FAS and present evidence of the importance of functionality appreciation in relation to healthier body image and psychological well-being.

Cross-Country Measurement Invariance and Effects of Sociodemographic Factors on Body Weight and Shape Concern-Related Constructs in Eight Countries

The aim of this study was to examine the cross-country invariance of five well-established measures of body weight and shape concern-related attitudes and behaviors (i.e., drive for leanness, drive for muscularity, strategies to increase muscle, strategies to lose weight, and weight and shape concerns). A secondary objective was to examine the effects of several sociodemographic factors (age, BMI, socioeconomic status, and gender) on item and latent factor scores of these constructs. A total of 6272 emerging adults (4218 women; M_age = 21.46, SD = 3.11) from Australia, Belgium, Canada, China, Italy, Japan, Spain, and the U.S. completed a self-report online survey as part of a larger study. Overall, support for partial invariance both across countries and in terms of the considered sociodemographic factors was found for reduced versions of the five measures. Significant differences in latent means were found across countries, these being of greater magnitude for drive for leanness and strategies to lose weight. The considered sociodemographic factors (most notably BMI and gender) were associated with the latent mean scores of the assessed constructs. The present study contributes to current literature by providing cross-cultural invariant versions of several measures of relevance in the field of body image.

Translation and validation of body image instruments: Challenges, good practice guidelines, and reporting recommendations for test adaptation

Body image research has grown rapidly to include new cultural and linguistic populations, but this gives rise to a need for measurement instruments that are sensitive to local contextual variations while remaining equivalent across groups. Test adaptation, or the translation and validation of a source instrument for use in a new cultural group, is an important part of this process. Here, we offer an operational framework for conducting effective test adaptation. We cover good-practice guidelines for instrument translation and suggest effective strategies for achieving semantic equivalence of translated instruments. We also focus on measurement invariance and provide good-practice and reporting guidelines for conducting exploratory and confirmatory factor analyses. Finally, we suggest good-practice guidelines for demonstrating that scores on translated measures have good reliability and validity. It is our hope that the availability of this article will assist body image scholars seeking to conduct robust test adaptations of existing measurement tools.

Systematic review of body image measures

This systematic review synthesizes and critically appraises measurement properties of influential body image measures. Eight measures that met the definition of an assessment of body image (i.e., an individual's cognitive or affective evaluation of their body or appearance with a positive or negative valence), and scored high on systematic expert priority ranking, were included. These measures were: the Body Appreciation Scale (original BAS and BAS-2), the Body Esteem Scale for Adolescents and Adults, the Body Shape Questionnaire, the Centre for Appearance Research Valence Scale, the Drive for Muscularity Scale, two subscales of the Eating Disorders Examination Questionnaire, one subscale of the Eating Disorder Inventory 3, and two subscales of the Multidimensional Body Relations Questionnaire. Articles assessing these scales' psychometric properties (N = 136) were evaluated for their methodological quality using the Consensus-based Standards for the selection of health Measurement Instruments (COSMIN) checklist, and a best evidence synthesis was performed. The results supported the majority of measures in terms of reliability and validity; however, suitability varied across populations, and some measurement properties were insufficiently evaluated. The measures are discussed in detail, including recommendations for their future use in research and clinical practice.

Drive for muscularity and disordered eating behaviors and its relationship with anthropometric indicators and physical activity in Mexican adolescent men

PURPOSE

Adolescent men have been identified as a risk population to develop eating disorders and other psychopathologies as drive for muscularity (DM) recently considered as muscularity-oriented disordered eating. It is important to identify risk factors as precursors of these pathologies. The aim of this study was to determine the risk of developing disordered eating behaviors (DEB) and DM and its relationship with anthropometric indicators and physical activity (PA) in adolescent men (high-school students, age 15-19) from Hidalgo, Mexico.

METHODS

A cross sectional, descriptive, and correlational field study was carried out in a non-probabilistic sample of 267 Mexican adolescents aged 15-19 years. Participants completed measures of DM, DEB, and PA. Each subject was weighted and heighted to calculate body mass index (BMI), body fat percentage, and fat-free mass index (FFMI).

RESULTS

Adolescents in the DM risk category (OR 8.28, CI 2.71-25.22) had significantly greater odds of developing DEB, while adolescents with higher BMI scores (OR 1.28, CI 1.14-1.45) tended to be more likely of developing DEB. The results showed that DEB and moderate PA were associated with DM; adolescents who engaged in DEB had an 8.64 times (CI 3.05-24.52) higher risk of developing DM. Participants classified in the category of highest moderate PA (OR 2.66, CI 1.26-5.59) had significantly greater odds of developing DM.

CONCLUSION

Important percentages of the risk of developing DEB and DM were determined in Mexican adolescent men. In agreement with other findings, there were no associations between anthropometric indicators and DM.

LEVEL OF EVIDENCE

V, descriptive cross-sectional study.

Is the Drive for Muscularity Scale a valid and reliable instrument for young adult women?

There is a lack of psychometric studies on scales aiming to evaluate the drive for muscularity in women. This study aimed to test whether the Drive for Muscularity Scale (DMS) yielded reliable and valid scores for assessing the drive for muscularity construct in young adult women. A cross-sectional study was conducted among 242 Brazilian adult women. Exploratory factor analysis, convergent validity, estimated internal consistency, and test-retest reliability of the DMS's scores were examined. The results of the exploratory factor analysis upheld the original unidimensional structure of the DMS for Brazilian women. The scale presented a significant but weak association with body mass index and risk behaviors for eating disorders. Adequate internal consistency and 2-week test-retest reliability were found. Future psychometric analyses (convergent and discriminant validity) of the DMS are encouraged to further our understanding of drive for muscularity in women, especially to confirm its unidimensional factor structure. Future research avenues also include examining the reliability and validity of the DMS's scores among women from various cultures.

Adaptation and validation of a short French version of the Drive for Muscularity Scale in male athletes (DMS-FR)

The purpose of this paper was to adapt and examine the psychometric properties of a French-language Drive for Muscularity Scale (DMS). First, a preliminary version of the scale, based on both the English-language version of the DMS and the literature on the drive for muscularity, was developed following a committee validation process. Second, the factor structure of the DMS-FR was investigated with principal component analysis (PCA) in a sample of 114 male athletes (Mage = 23.35; SDage = 4.93), leading to a nine-item scale (Study 1). Third, in Study 2, the internal factor structure, temporal stability, and concurrent validity were examined through a series of structural hypothetical modelisation in a sample of 129 male athletes (Mage = 27.03; SDage = 7.81). The results indicated that the scale has good psychometric properties. Specifically, the PCA, and the series of structural hypothetical modelisation, suggested two theoretical factors (i.e., Muscularity Body Dissatisfaction and Muscularity Behaviors), and more, with a bi-factor model in a SEM. The results also indicated sufficient concurrent validity with the Male Body Dissatisfaction Scale (MBDS) and adequate internal consistency (Cronbach’s alphas were .87 for the Muscularity Body Dissatisfaction subscale, and .88 for the Muscularity Behaviors subscale). The findings overall suggest good reliability and construct validity for this French version of the DMS (DMS-FR), which will be useful for future research and clinical practice in French-speaking countries.