Human Reproduction, Vol. 18, No. 8, 1747-1752,
August 2003
© 2003 European Society of Human Reproduction and Embryology
Changes in body composition during post-menopausal hormone therapy: a 2 year prospective study*
1 Centre d’Evaluation des Maladies Osseuses, Département de Rhumatologie, Hôpital Cochin, Université René Descartes, Paris, 2 Synarc, INSERM U403, Lyon, 3 Département de Biostatistique, Hôpital Saint-Louis, et INSERM U444, Paris, 4 Service de Gynécologie, Hôpital Hôtel-Dieu, Paris and 5 Service de Rhumatologie, Hôpital Porte Madeleine, et ERIT-M0101, Orleans, France
6 To whom correspondence should be addressed at: Hôpital Cochin, Service de Rhumatologie, Centre d’Evaluation des Maladies Osseuses, 27 rue du Faubourg Saint Jacques, 75014 Paris, France. e-mail: christian.roux{at}cch.ap-hop-paris.fr
BACKGROUND: Post-menopausal hormone therapy (pHT) induces changes in both body composition and bone mineral density (BMD). METHODS: In 109 post-menopausal women beginning either tibolone 2.5 mg (n = 29), tibolone 1.25 mg (n = 42) or estradiol 2 mg plus norethisterone acetate 1 mg (E2 + NETA) (n = 38), we assessed body composition, total and regional BMD by dual energy X-ray absorptiometry, and the serum bone alkaline phosphatase (BAP), osteocalcin and the urinary excretion to type I collagen C-telopeptide (CTX) at baseline and after 2 years. RESULTS: At baseline, BMD at all sites correlated negatively with age and years since menopause, and positively with lean mass and fat mass (r = 0.42, P < 0.001 and r = 0.26, P = 0.006 at the total femur). During treatment, BMD increased at all sites (P < 0.001), and serum BAP, osteocalcin, and urinary CTX decreased in all groups (P < 0.001). Lean mass increased whereas android fat and android obesity index decreased. The increase in BMD at all sites correlated positively with changes of lean mass at 2 years. CONCLUSIONS: Both fat mass and lean mass are related to BMD in post-menopausal women, the relationship being strongest with lean mass; an increase in lean mass and a change in distribution of body fat are observed during treatment with E2 + NETA and tibolone.
Key words: body composition/body mass index/fat mass/hormone replacement therapy/lean mass
* Data presented in part at the ASBMR 24th annual meeting at San Antonio, Texas, USA.
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