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dc.contributor.authorHumphries, B
dc.contributor.authorNewton, R
dc.contributor.authorBronks, R
dc.contributor.authorMarshall-Gradisnik, Sonya
dc.contributor.authorMcBride, Jeff
dc.contributor.authorTriplett-McBride, T
dc.contributor.authorHakkinen, Kejo
dc.contributor.authorKraemer, William J
dc.contributor.authorHumphries, N
dc.date.accessioned2013-07-05
dc.date.accessioned2014-09-24T04:58:35Z
dc.date.accessioned2017-03-01T23:54:08Z
dc.date.available2017-03-01T23:54:08Z
dc.date.issued2000
dc.date.modified2014-09-24T04:58:35Z
dc.identifier.issn0195-9131
dc.identifier.urihttp://hdl.handle.net/10072/63126
dc.description.abstractPurpose: This study examined the effects of 24 wk of high intensity strength training or low intensity walking on lumbar bone mineral density (BMD), muscular strength, and calcium turnover in Australian women either taking hormone replacement therapy (HRT) or not taking HRT. Methods: A subject pool of 64 women between 45–65 yr and randomly allocated into weights (N 5 21), walking (N 5 20), weightsHRT (N 5 14), and walkingHRT (N 5 9) groups completed this study. All subjects trained twice weekly in either a 50-min walking or weight-training program (60–90% 1RM). Measurements included maximal isometric knee strength, 1RM bench press, 1RM squat, isokinetic back strength, lumbar (L2-L4) BMD, serum osteocalcin, and urinary deoxypyridinoline crosslinks (Dpd). Results: No significant group differences in BMD were evident at the completion of training. However, a significant (P , 0.05) within group change was apparent for the walking group since BMD decreased 1.3% below baseline testing. Osteocalcin levels increased significantly (P , 0.05) in the walking (22%) group. Maximal bench press and squat strength improved significantly (P , 0.05) in the weights (25.8% and 37.7%) and weightsHRT (25.4% and 35.7%) groups. The weights group also increased significantly (P , 0.05) in isokinetic back strength (22.2%). Conclusion: It was concluded that short-term high intensity resistance training provides an effective means for increasing muscular strength in women between 45 and 65 yr. The training effects on lumbar BMD were not apparent in the present study.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.publisherThe American College of Sports Medicine
dc.publisher.placeIndiana
dc.publisher.urihttp://journals.lww.com/acsm-msse/Abstract/2000/06000/Effect_of_exercise_intensity_on_bone_density,.2.aspx
dc.relation.ispartofpagefrom1043
dc.relation.ispartofpageto1050
dc.relation.ispartofissue6
dc.relation.ispartofjournalMedicine and Science in Sports and Exercise
dc.relation.ispartofvolume32
dc.subject.fieldofresearchExercise Physiology
dc.subject.fieldofresearchHuman Movement and Sports Sciences
dc.subject.fieldofresearchMedical Physiology
dc.subject.fieldofresearchPublic Health and Health Services
dc.subject.fieldofresearchcode110602
dc.subject.fieldofresearchcode1106
dc.subject.fieldofresearchcode1116
dc.subject.fieldofresearchcode1117
dc.titleEffect of exercise intensity on bone density, strength, and calcium turnover in older women
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codec1x
gro.facultyGriffith Health Faculty
gro.hasfulltextNo Full Text
gro.griffith.authorMarshall-Gradisnik, Sonya M.


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