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  • Title: The effects of exercise on body weight and circulating leptin in premature infants.
    Author: Eliakim A, Dolfin T, Weiss E, Shainkin-Kestenbaum R, Lis M, Nemet D.
    Journal: J Perinatol; 2002; 22(7):550-4. PubMed ID: 12368971.
    Abstract:
    OBJECTIVE: To assess the effect of daily movements on weight gain, serum leptin, and insulin-like growth factor I (IGF-I) in premature infants. STUDY DESIGN: Twenty very-low-birth-weight premature infants were matched and randomized to a daily movement (n = 10) and control groups (n = 10). Daily movement consisted of passive range of motion with gentle compression of both the upper and lower extremities 5 days per week for 4 weeks. RESULTS: Daily movements led to a significant increase in weight gain (784 +/- 51 vs 608 +/- 26 g in movements and controls, respectively, p < 0.02), and to a significant increase in leptin (0.60 +/- 0.19 vs 0.13 +/- 0.06 ng/ml in movements and controls, respectively 18.8 +/- 4.1 vs 9.2 +/- 4.1 ng/ml in movements and controls, respectively); however, this increase was not statistically significant. CONCLUSION: A relatively brief range of motion daily movement intervention was associated with greater weight gain and increased leptin levels in very-low-birth-weight premature infants. This may suggest that at least part of the daily movements associated with increase in body weight resulted from an increase in adipose tissue.
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