caa a22 4500 605463468 CHVBK 20210128100253.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00774-014-0620-8 doi (NATIONALLICENCE)springer-10.1007/s00774-014-0620-8 Past sporting activity during growth induces greater bone mineral content and enhances bone geometry in young men and women [Elektronische Daten] [Takeru Kato, Masato Niwa, Takenori Yamashita, Minoru Matumoto, Yoshihisa Umemura] We aimed to determine the effect of past sporting activity on bone mineral content (BMC), areal bone mineral density (aBMD) in the lumbar spine and proximal femur, and bone geometry of the mid femur in young men and women. We assessed 142 subjects, comprising 79 young men (21.2±0.8years) and 63 premenopausal young women (21.4±0.6years). The subjects were classified into three groups, two on the basis of the age of starting to participate in sport [elementary school starters (6-12years), junior high school to university starters (13-22years)], and the third group had no participation in sport. We measured BMC and aBMD by dual-energy X-ray absorptiometry (DXA) in the lumbar spine and proximal femur, and bone geometric characteristics of the mid femur by magnetic resonance imaging (MRI), and calculated the osteogenic index (OI) of previous sporting activity. The OI correlated significantly with many MRI-determined measures of bone geometry; DXA-measured BMC and aBMD were effective indicators of previous sporting activity in both sexes. The female elementary school starters had significantly greater femoral mid-diaphyseal perimeters (vs the no-sport group), bone cross-sectional area (vs the 13-22-year-old starters and the no-sport group), and maximum and minimum second moment of area at the mid-diaphysis point of the femur (vs the no-sport group). The OI is a proven practicable and useful index. DXA- and MRI-determined geometric characteristics showed that high-impact, weight-bearing exercise before and in early puberty induces greater total proximal femur BMC and enhances femoral mid-diaphyseal size and shape, and that these benefits persisted in young adult women. The Japanese Society for Bone and Mineral Research and Springer Japan, 2014 Osteogenic index nationallicence Prepuberty nationallicence Weight-bearing exercise nationallicence Bone geometry nationallicence Kato Takeru Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science, Kishioka, 1001-1, 510-0293, Suzuka, Japan aut Niwa Masato Mie-Chuo Medical Center, National Hospital Organization, 2158-5 Hisaimyojin-cho, 514-1101, Tsu, Mie, Japan aut Yamashita Takenori Department of Clinical Radiation, Faculty of Health Science, Suzuka University of Medical Science, Kishioka, 1001-1, 510-0293, Suzuka, Japan aut Matumoto Minoru Laboratory for Exercise Physiology and Biomechanics, School of Health and Sport Sciences, Chukyo University, Kaizu-cho, 470-0393, Toyota, Japan aut Umemura Yoshihisa Laboratory for Exercise Physiology and Biomechanics, School of Health and Sport Sciences, Chukyo University, Kaizu-cho, 470-0393, Toyota, Japan aut Journal of Bone and Mineral Metabolism Springer Japan 33/5(2015-09-01), 569-576 0914-8779 33:5<569 2015 33 774 https://doi.org/10.1007/s00774-014-0620-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00774-014-0620-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kato Takeru Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science, Kishioka, 1001-1, 510-0293, Suzuka, Japan aut NATIONALLICENCE 700 1- Niwa Masato Mie-Chuo Medical Center, National Hospital Organization, 2158-5 Hisaimyojin-cho, 514-1101, Tsu, Mie, Japan aut NATIONALLICENCE 700 1- Yamashita Takenori Department of Clinical Radiation, Faculty of Health Science, Suzuka University of Medical Science, Kishioka, 1001-1, 510-0293, Suzuka, Japan aut NATIONALLICENCE 700 1- Matumoto Minoru Laboratory for Exercise Physiology and Biomechanics, School of Health and Sport Sciences, Chukyo University, Kaizu-cho, 470-0393, Toyota, Japan aut NATIONALLICENCE 700 1- Umemura Yoshihisa Laboratory for Exercise Physiology and Biomechanics, School of Health and Sport Sciences, Chukyo University, Kaizu-cho, 470-0393, Toyota, Japan aut NATIONALLICENCE 773 0- Journal of Bone and Mineral Metabolism Springer Japan 33/5(2015-09-01), 569-576 0914-8779 33:5<569 2015 33 774