Obesity and Hair Cortisol: Relationships Varied Between Low-Income Preschoolers and Mothers

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Obesity and Hair Cortisol: Relationships Varied Between Low‑Income Preschoolers and Mothers Jiying Ling1   · Dongjuan Xu2 · Lorraine B. Robbins3 · Tsui‑Sui Annie Kao4 Accepted: 21 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020

Abstract Purpose  Literature on the relationship between hair cortisol concentration (HCC) and body mass index (BMI) is scarce and inconsistent in both preschoolers and parents. Thus, the study aimed to examine the relationships among HCC, perceived distress, coping, and BMI among low-income Head Start preschoolers and mothers. Methods  A cross-sectional, correlational study was conducted with a non-random sample of 35 mother-preschooler dyads. Height and weight were measured using a ShorrBoard Stadiometer and a Seca portable electronic scale, respectively. HCC was extracted using the enzyme immunoassay approach. Mothers’ perceived distress and coping were assessed by Cohen’s Perceived Stress Scale. Results  Mothers’ mean age was 29.74 years, and preschoolers’ mean age was 4.69 years. The sample included 17% Hispanic, 54% Black, and 60% single mothers; and 23% Hispanic and 60% Black preschoolers. Compared to mothers in low HCC group (