Effect of treadmill gait on bone markers and bone mineral density of quadriplegic subjects
Autor: | Celia Regina Garlipp, S.H. Afaz, Daniela Cristina Leite de Carvalho, M.A. Moda, Alberto Cliquet, P.V. Bottini |
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Rok vydání: | 2006 |
Předmět: |
Adult
Male medicine.medical_specialty Deoxypyridinoline Bone density Physiology Immunology Osteoporosis Osteocalcin Biophysics Urology Electric Stimulation Therapy Quadriplegia Biochemistry Bone resorption Bone remodeling chemistry.chemical_compound Absorptiometry Photon Gait training Bone Density medicine Humans General Pharmacology Toxicology and Pharmaceutics Amino Acids Femoral neck Bone mineral business.industry General Neuroscience Cell Biology General Medicine medicine.disease Alkaline Phosphatase Surgery Exercise Therapy medicine.anatomical_structure chemistry REABILITAÇÃO Case-Control Studies Chronic Disease business Biomarkers |
Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
ISSN: | 0100-879X |
Popis: | Quadriplegic subjects present extensive muscle mass paralysis which is responsible for the dramatic decrease in bone mass, increasing the risk of bone fractures. There has been much effort to find an efficient treatment to prevent or reverse this significant bone loss. We used 21 male subjects, mean age 31.95 +/- 8.01 years, with chronic quadriplegia, between C4 and C8, to evaluate the effect of treadmill gait training using neuromuscular electrical stimulation, with 30-50% weight relief, on bone mass, comparing individual dual-energy X-ray absorptiometry responses and biochemical markers of bone metabolism. Subjects were divided into gait (N = 11) and control (N = 10) groups. The gait group underwent gait training for 6 months, twice a week, for 20 min, while the control group did not perform gait. Bone mineral density (BMD) of lumbar spine, femoral neck, trochanteric area, and total femur, and biochemical markers (osteocalcin, bone alkaline phosphatase, pyridinoline, and deoxypyridinoline) were measured at the beginning of the study and 6 months later. In the gait group, 81.8% of the subjects presented a significant increase in bone formation and 66.7% also presented a significant decrease of bone resorption markers, whereas 30% of the controls did not present any change in markers and 20% presented an increase in bone formation. Marker results did not always agree with BMD data. Indeed, many individuals with increased bone formation presented a decrease in BMD. Most individuals in the gait group presented an increase in bone formation markers and a decrease in bone resorption markers, suggesting that gait training, even with 30-50% body weight support, was efficient in improving the bone mass of chronic quadriplegics. |
Databáze: | OpenAIRE |
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