Impact + resistance training improves bone health and body composition in prematurely menopausal breast cancer survivors: a randomized controlled trial
| Autor: | Jessica Dobek, Kerri M. Winters-Stone, B. Torgrimson-Ojerio, Lillian Nail, S.-W. Luoh, Michael C. Leo, Jill A. Bennett, Anna L. Schwartz |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
musculoskeletal diseases
Adult medicine.medical_specialty Endocrinology Diabetes and Metabolism medicine.medical_treatment Osteoporosis Menopause Premature Antineoplastic Agents Breast Neoplasms Bone health Article law.invention Breast cancer Randomized controlled trial law Bone Density Internal medicine medicine Humans Survivors Osteoporosis Postmenopausal Chemotherapy Lumbar Vertebrae business.industry Femur Neck Resistance Training Middle Aged musculoskeletal system medicine.disease Obesity Rheumatology Exercise Therapy Treatment Outcome Orthopedic surgery Physical therapy Body Composition Patient Compliance Female business |
| Popis: | Our randomized controlled trial in prematurely menopausal breast cancer survivors showed that impact + resistance training prevented increases in percentage of body fat compared with controls and also improved BMD at the hip and prevented BMD loss at the spine among exercise-trained women who were menopausal for1 year.Cancer treatment-related menopause worsens bone health and body composition in breast cancer survivors (BCS). We investigated whether impact + resistance training could improve bone mineral density (BMD), reduce bone turnover, build muscle, and decrease fat mass in BCS with premature menopause.We conducted a randomized controlled trial in 71 BCS (mean age, 46.5 years) within 5 years of treatment-related menopause. Women were randomly assigned to one of two groups: (1) impact + resistance training (prevent osteoporosis with impact + resistance (POWIR)) or (2) exercise placebo (FLEX) 3×/week for 1 year. Outcomes were hip and spine BMD (in grams per square centimeter) and body composition (percent body fat (%BF) and lean and fat mass (in kilograms)) by DXA and bone turnover markers (serum osteocalcin (in nanograms per milliliter) and urinary deoxypryrodinoline (in nanomoles per milliliter).There were no significant group × time interactions for bone outcomes when using an intent-to-treat approach on the full sample. In analyses restricted to BCS who were menopausal for ≥1 year, POWIR increased BMD at the hip and slowed BMD loss at the spine compared with FLEX (femoral neck-POWIR, 0.004 ± 0.093 g/cm(2) vs. FLEX, -0.010 ± 0.089 g/cm(2); p 0.01; spine-POWIR, -0.003 ± 0.114 g/cm(2) vs. FLEX, -0.020 ± 0.110 g/cm(2); p = 0.03). POWIR prevented increases in %BF (POWIR, 0.01 % vs. FLEX, 1.3 %; p 0.04). Women with attendance to POWIR at ≥64 % had better improvements in %BF than women attending less often (p 0.03).Impact + resistance training may effectively combat bone loss and worsening body composition from premature menopause in BCS. |
| Databáze: | OpenAIRE |
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