Impact exercise and bone density in premenopausal women with below average bone density for age
| Autor: | Jeff Walkley, Peter A. Rich, Kathleen G. Greenway |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
musculoskeletal diseases
Adult medicine.medical_specialty Sports medicine Bone density Physiology Lumbar vertebrae Bone and Bones Forearm Bone Density Physiology (medical) medicine Humans Orthopedics and Sports Medicine Exercise Bone mineral Hip Lumbar Vertebrae business.industry Public Health Environmental and Occupational Health General Medicine Radiography Radius medicine.anatomical_structure Target site Premenopause Physical therapy Lumbar spine Female Exercise prescription business |
| Zdroj: | European journal of applied physiology. 115(11) |
| ISSN: | 1439-6327 |
| Popis: | To study the effects of two home-based impact exercise programs on areal bone mineral density (aBMD) in adult premenopausal women with below average aBMD for age (negative Z-scores; 40.8 years; n = 107). Two unilateral impact exercise programs were employed, one targeting the total hip and lumbar spine (n = 42 pairs), the other the distal radius (n = 24 pairs) with some individuals performing both. Force plate data were used to establish exercise loading characteristics (peak loads, time to peak), dual-energy X-ray absorptiometry (DXA) provided bone data. Calcium intake, health and extraneous physical activity (PA) were determined by survey. Exercise for both hip and spine consisted of unilateral landings from adjustable steps (maximum height 63.5 cm) while impacts were delivered to the forearm by arresting falls against a wall. An exercise log was used to provide the exercise prescription, record each exercise bout and any injuries. Participants were randomly assigned to exercise or control groups and pair-matched (age, BMI, Z-score, aBMD). Compliance was calculated as the number of sessions completed divided by the total prescribed number (mean ~50 %). The programs delivered significant gains pre to post at each site compared with significant losses in controls (forearm: 3.9 vs −3.9 %; total hip: 2.0 vs −2.6 %; lumbar spine: 2.8 vs −2.9 % exercise and controls, respectively, all p |
| Databáze: | OpenAIRE |
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