Drive for leanness: potentially less maladaptive compared to drives for thinness and muscularity
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ORIGINAL ARTICLE
Drive for leanness: potentially less maladaptive compared to drives for thinness and muscularity Brittany Lang1 · Diana Rancourt1 Received: 13 June 2019 / Accepted: 11 July 2019 © Springer Nature Switzerland AG 2019
Abstract Purpose Drive for leanness (DL), a motivating interest in having low body fat and toned muscles, is hypothesized to be less maladaptive than drives for thinness (DT) and muscularity (DM), which has implications for its inclusion in eating- and health-related prevention and treatment programs; however, little research has explored this hypothesis. The current study investigated DL’s uniqueness from these other drives, as well as simultaneously explored if associations of DL and a range of health-related outcomes supported that it may be less maladaptive than DT and DM. Methods A sample of 589 undergraduate participants completed an online battery of drive (DL, DT, DM) and health-related measures (disordered eating, aerobic and weight training frequency, exercise motivation, dieting, appearance enhancing supplement use, anxiety, and depression). Exploratory factor analysis and semi-partial correlations evaluated DL’s uniqueness. Hierarchical regressions and generalized linear models evaluated comparative associations of drives with health-related outcomes. Analysis of covariance investigated comparative perceived drive healthiness. Results DL was supported as unique from DT and DM. DL was less strongly associated with maladaptive outcomes (e.g., disordered eating, ExpB = .99, p = .86) and more strongly predictive of adaptive outcomes (e.g., healthy exercise motivation, β = .30, p .40) and eigenvalues (> 1.0) were examined to determine onto which factor each item loaded. Items not loading (
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