Exercise was found to be the predominant lifestyle determinant of bone strength for 81 Caucasian women.Exercise was found to be the predominant lifestyle determinant of bone strength for 81 Caucasian women who participated in 10 years of the Penn State Young Women' Health Study, says an article published in the June issue (Vol 144 Issue 6) of Journal of Pediatrics. Researchers measured bone mineral mass (g), density (BMD BMD In currencies, this is the abbreviation for the Bermudian Dollar. Notes: The currency market, also known as the Foreign Exchange market, is the largest financial market in the world, with a daily average volume of over US $1 trillion. , g/cm2), and body composition from dual energy x-ray absorptiometry Dual energy X-ray absorptiometry (DXA, previously DEXA) is a means of measuring bone mineral density (BMD). Two X-ray beams with differing energy levels are aimed at the patient's bones. and estimated proximal femur femur (fē`mər): see leg. section modulus (bone bending strength). Calcium intake was determined from 45 days of prospective food records at regular intervals between the ages of 12 and 22 years. Exercise history and oral contraceptive oral contraceptive n. A pill, typically containing estrogen or progesterone, that prevents conception or pregnancy. Also called birth control pill. use were assessed by questionnaire. Daily calcium intakes between ages 12 and 22 ranged from 500 to 1900 mg/d and were nor significantly associated with bone gain or bone strength. Oral contraceptive use during adolescence was not correlated with bone or body composition measurements. Femoral femoral /fem·o·ral/ (fem´or-al) pertaining to the femur or to the thigh. fem·o·ral adj. Of or relating to the femur or thigh. neck BMD did not change from 17 to 22 years of age, but section modulus increased 3%. Only exercise during adolescence was significantly associated with increased BMD and bone bending strength. |
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