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The relationship of sustained exercise training and bone mineral density in aging male runners
Author(s) -
Goodpaster B. H.,
Costill D. L.,
Trappe S. W.,
Hughes G. M.
Publication year - 1996
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/j.1600-0838.1996.tb00094.x
Subject(s) - bone mineral , medicine , lean body mass , body weight , dual energy , dual energy x ray absorptiometry , lumbar vertebrae , lumbar , zoology , physical therapy , endocrinology , osteoporosis , anatomy , biology
Fifty‐six men aged 42–73 years (50.2±10.0 years), who were competitive distance runners 20–25 years previously, were examined for bone mineral density (BMD) to determine the relationship between sustained distance running and BMD. Subjects were classified as being highly trained (HT, n =17), moderately trained (MT, n =29) or untrained (UT, n =10) according to their training in recent years. Subjects in each group were of similar age (HT 46.5±2.01, MT 53.0±1.51, UT 46.7±2.44 years) and lean body mass. Total body weight (kg) and percentage fat, however, were significantly greater ( P <0.05) in the UT group than in either the MT or HT groups (UT 80.6±2.44 kg, 22.0±1.16%; MT 74.9±1.51 kg, 17.5±0.61%; HT 70.5±1.71 kg, 13.5±0.59%). Lumbar vertebrae and hip region BMD (g·cm −2 ) was determined via dual energy X‐ray absorptiometry (DEXA). No differences in BMD were found among the three groups in either the lumbar (HT 1.00±0.02, MT 1.02±0.03, UT 1.07±0.04 g·cm −2 ) or the hip regions (HT 0.99±0.03, MT 0.98±0.02, UT 1.06±0.04 g·cm −2 ). Furthermore, none of the groups had BMD that was significantly different from age‐matched normative values taken from a reference database. A moderate correlation was found between body weight and BMD when combining all subjects ( r =0.38 for lumbar and r =0.41 for hip). These results indicate that middle‐aged to older males who have sustained exercise training in the form of running do not have significantly different lumbar vertebrae or hip region BMD compared to individuals who run less or not at all.