Sociocultural influences and body change strategies in Spanish adolescent boys of different weight status

Intentional weight gain efforts among young Canadian adults aged 17-32 years

Research related to body weight management often focuses on weight loss but attempts to gain weight may be common given societal ideals related to body shape and size. The objectives of this study were to examine the prevalence and correlates of intentional weight gain attempts and to characterize weight gain strategies reported among young Canadian adults. Cross-sectional data were drawn from a 2017 online survey of young adults, aged 17 to 32 years, recruited from five large cities (n=976, 493 men and 483 women). The prevalence of weight gain attempts and specific strategies used were estimated, with multivariable logistic regression used to examine correlates of intent to gain weight. Over one in five men (23.1%) and approximately one in twenty women (6.0%) reported attempting to gain weight in the past 12 months. Men, those who perceived themselves as underweight (compared to "just about right"), and those who reported one or more racial/ethnic identity or did not state their race/ethnicity (compared to white only) had higher odds of reporting attempting to gain weight. Individuals who perceived themselves as overweight or who self-reported heights and weights corresponding to a BMI between 25 and 29.9 had lower odds of reporting attempting to gain weight. Those attempting to gain weight reported using three strategies on average, with the most prevalent among both men and women including eating more overall, eating more protein, and exercising/weightlifting. The results suggest that, while less common than dieting, weight gain attempts are not rare, especially among young men.

Am I Overweight? A Longitudinal Study on Parental and Peers Weight-Related Perceptions on Dietary Behaviors and Weight Status Among Adolescents

OBJECTIVE

An investigation of the interplay between various types of adolescents' perceptions of weight status in predicting adolescents' nutrition behavior and their body mass was conducted. In particular, it was hypothesized that the relationship between parental and peers' perceptions of their own weight status (reported by adolescents) and objectively measured weight status of adolescents would be mediated by three types of adolescents' weight status perceptions (adolescents' own weight perceptions, parental perceptions of adolescents' weight status perceived by participants, and peers' perceptions of adolescents' weight status perceived by participants) and by adolescents' nutrition behaviors.

DESIGN

Data were collected twice, with a 13-month follow-up. Participants (N = 1096) were aged 14-20, with BMI ranging from 16.20 to 41.21. Multiple mediation analysis with two sequential mediators was applied.

MAIN OUTCOME MEASURES

At the baseline adolescents completed the questionnaire assessing their nutrition behaviors and weight status perceptions. Weight and height were measured objectively at baseline and follow-up.

RESULTS

Two types of weight perceptions (adolescents' own weight status perceptions, peers' perceptions of adolescents' weight status reported by participants), and adolescents' nutrition behaviors mediated the relationship between the others' own weight perceptions and adolescents' weight status. No indirect effects of others' own weight perceptions on adolescents' weight status through parental perceptions were found.

CONCLUSION

Adolescents' nutrition behaviors and body weight status depend on what they think about their own weight status and what they think of their peers' perceptions, but do not depend on what adolescents think of their parents' perceptions.