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Effect of 1‐Year Dairy Product Intervention on Fat Mass in Young Women: 6‐Month Follow‐up
Author(s) -
Eagan Marianne S.,
Lyle Roseann M.,
Gunther Carolyn W.,
Peacock Munro,
Teegarden Dorothy
Publication year - 2006
Publication title -
obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.438
H-Index - 199
eISSN - 1930-739X
pISSN - 1930-7381
DOI - 10.1038/oby.2006.263
Subject(s) - medicine , calorie , calcium , zoology , fat mass , lean body mass , body mass index , randomized controlled trial , endocrinology , body weight , biology
Objective: Previous results from this laboratory suggest that a 1‐year dairy intake intervention in young women does not alter fat mass. The objective of this study was to determine the impact of the 1‐year dairy intervention 6 months after completion of the intervention. Research Methods and Procedures: Previously, normal‐weight young women ( n = 154) were randomized to one of three calcium intake groups: control (<800 mg/d), medium dairy (1000 to 1100 mg/d), or high dairy (1300 to 1400 mg/d) for a 1‐year trial ( n = 135 completed). In the current study, 51 women were assessed 6 months after completion of the intervention trial. Body compositions (body fat, lean mass) were measured using DXA. Self‐report questionnaires were utilized to measure activity and dietary intake (kilocalories, calcium). Results: The high‐dairy group ( n = 19) maintained an elevated calcium intake (1027 ± 380 mg/d) at 18 months compared with the control group ( n = 18, 818 ± 292; p = 0.02). Mean calcium intake over the 18 months predicted a negative change in fat mass ( p = 0.04) when baseline BMI was controlled in regression analysis (model R 2 = 0.11). 25‐Hydroxyvitamin D levels were correlated with fat mass at each time‐point (baseline, r = −0.41, p = 0.003; 12 months, r = −0.42, p = 0.002; 18 months, r = −0.32, p = 0.02) but did not predict changes in fat mass. Discussion: Dietary calcium intake over 18 months predicted a negative change in body fat mass. Thus, increased dietary calcium intakes through dairy products may prevent fat mass accumulation in young, healthy, normal‐weight women.