Maintaining femoral bone density in adults: how many steps per day are enough?

Boyer, Katherine A.; Kiratli, B. Jenny; Andriacchi, Thomas P.; Beaupré, Gary S.

doi:10.1007/s00198-011-1538-9

Cited by 26 publications

(19 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Health status in this study was self-reported and it is possible that some subjects had unknown or unreported physical or cognitive impairments that may affect balance or gait mechanics. However, these highly active middle-aged and older adults did have bone mineral density values that were greater than expected based on the standardized values for age and gender [28], which provides some evidence of an attenuation in age-related musculoskeletal changes in this population. Finally, this was a cross-sectional study and therefore it is not possible to show an effect of previous activity or changes in walking amounts on gait mechanics, physical functioning or tissue properties.…”

Section: Limitationsmentioning

confidence: 87%

See 1 more Smart Citation

The role of physical activity in changes in walking mechanics with age

2012

Self Cite

View full text Add to dashboard Cite

Section: Limitationsmentioning

confidence: 87%

“…Young and healthy active older individuals were recruited from the greater San Francisco Bay Area as part of a larger study [28]. Middle-aged and older individuals were 50-80 yrs of age, with a body mass index of less than or equal to 30 kg/m 2 , and indicated walking is their primary form of physical activity.…”

Section: Methodsmentioning

confidence: 99%

The role of physical activity in changes in walking mechanics with age

2012

Self Cite

View full text Add to dashboard Cite

“…We found that participants who had taken part in a balance training program had a statistically significantly higher OR for having a habitual PA level of 5000 or more steps/day compared with controls after the 12-week trial. Given the evidence suggesting that PA is important for people with osteoporosis, a level of 5000 or more steps/day would be expected to contribute to maintained bone mass and reduced risk of many lifestyle-related diseases 1,3…”

Section: Discussionmentioning

confidence: 99%

“…Older adults are advised to be active daily and to accumulate at least 150 minutes per week of moderate to vigorous intensity PA (MVPA), performed in bouts of at least 10 minutes 1. Recommendations are that individuals with osteoporosis should engage in weight-bearing PA, such as walking, to retain bone mineral density, strength, and balance, thereby reducing the risk of falls and fractures 2,3. However, fall-related concerns and impaired balance may lead to avoidance of activities and result in a low habitual PA level and a sedentary behavior 4…”

Section: Introductionmentioning

confidence: 99%

Short- and Long-Term Effects of Balance Training on Physical Activity in Older Adults With Osteoporosis: A Randomized Controlled Trial

Dohrn

Hagströmer

Hellénius

et al. 2017

Journal of Geriatric Physical Therapy

View full text Add to dashboard Cite

Background and Purpose:We have developed a 12-week balance training program for older adults shown to improve fall-related concerns, gait speed, balance performance, and physical function. We hypothesized that this balance training would also contribute to higher habitual physical activity (PA) levels and improved health-related quality of life (HRQoL). The primary aim was to evaluate short- and long-term effects of the balance training program on objectively measured habitual PA in older adults with osteoporosis. Secondary aims were to assess the effects of the balance training on HRQoL, and to study whether any effects on PA were associated with changes in HRQoL, gait speed, balance performance, fall-related concerns, and physical function.Methods:A randomized controlled trial with follow-up at 3, 9, and 15 months, including 91 participants with osteoporosis (75.6 ± 5.4 years), compared a balance training group (n = 61) with a control group (n = 30). The primary outcome was effect on habitual PA measured as steps/day, dichotomized into less than 5000 or 5000 or more steps/day. Physical activity was assessed with pedometers (Yamax) and accelerometers (Actigraph), HRQoL with the Short Form-36 (SF-36), gait with a GAITRite walkway, balance performance with Modified-Figure-Eight test and one-leg stance, fall-related concerns with Falls Efficacy Scale International, and physical function with the advanced lower extremity subscale of the questionnaire Late Life Function and Disability Instrument. Statistical methods used were multivariate logistic regression and logistic generalized estimating equation.Results:Sixty-eight participants completed the short-term follow-up at 3 months, and 53 participants completed the long-term follow-up at 15 months. Per-protocol analysis (n = 68) showed that the odds ratio for having a daily step count of 5000 or more at 3 months was 6.17 (95% confidence interval, 1.23-30.91), P = .027, for the intervention group compared with the control group. The longitudinal analysis (n = 91) showed that the odds ratio for having a daily step count of 5000 or more at 15 months was 2.02 (95% confidence interval, 0.88-4.64), P = .096, for the intervention group compared with the control group. The mental component sum of the SF-36 improved significantly from baseline to 3 months in the intervention group, and the physical component sum improved in both groups, but no statistically significant differences were found between groups. No associations were found between PA and changes in covariates.Discussion and Conclusions:The short-term evaluation showed that balance training increased habitual PA in community-dwelling older adults with osteoporosis. A significantly higher proportion of participants in the intervention group reached a level of 5000 or more steps/day, which is important for overall health. This effect was not associated with improvements in HRQoL, gait speed, balance performance, or fall-related concerns, and did not persist through the long-term follow-up. To accomplish a sustained PA...

show abstract

“…Estudos têm relacionado a intensidade e número de passos necessários para aprimoramento da massa óssea. Boyer et al 13 demonstraram que indivíduos com menor peso necessitavam de mais que 10000 passos diários para obtenção de benefícios. Tudor-Loker e Bassett 11 relataram que não existem evidências de que o excesso de atividade seria associada a prejuízos à saúde.…”

Section: Introductionunclassified

Associação de força e nível de atividade física à densidade mineral óssea na pós-menopausa

Silva

Amorim

Carvalho

et al. 2015

Rev Bras Med Esporte

View full text Add to dashboard Cite

RESUMOIntrodução: o exercício físico atua melhorando a densidade mineral óssea (DMO) por gerar deformidades nesse tecido e estimular remodelação. Objetivo: verificar a associação entre força muscular e nível de atividade física à densidade mineral óssea (DMO) utilizando testes de força de bíceps, de sentar e levantar, dinamometria de mãos, história pregressa de atividade física e nível de atividade física, avaliado pelo pedô-metro com a DMO em mulheres na pós-menopausa. Métodos: estudo transversal, descritivo que mensurou a densidade mineral óssea pela absorção de dupla energia de raios X (DXA) da coluna lombar (L1-L4), fêmur e antebraços em 62 mulheres saudáveis no pós-menopausa, com média de 56,82 ± 4,02 anos de idade. Foi aplicado questionário para atividade física pregressa e realizada contagem diária de passos (pedômetro). A força muscular foi medida pelos testes de dinamometria de mãos, de 30 segundos de bíceps bilateral e de sentar e levantar da cadeira em 30 segundos. Realizou-se registro alimentar de três dias para mensuração da ingestão diária de cálcio e vitamina D. Resultados: os indivíduos apresentaram altos níveis de atividade física, porém baixa ingestão diária de cálcio e vitamina D. Não foi verificada diferença estatisticamente significativa entre força muscular nos dois grupos estudados, com DMO diminuída e DMO normal. O grupo com DMO diminuída apresentou maior número de passos diários e menor peso quando comparado com o grupo com DMO normal. Foram observadas várias correlações positivas de baixa magnitude, embora significantes, entre a densitometria e a força muscular (p < 0,50). Conclusão: os autores descreveram risco cinco vezes e meia maior em mulheres não praticantes de atividade física da adolescência até a idade adulta e de apresentarem redução da DMO em comparação com as mulheres que apresentaram DMO normal.Palavras-chave: exercício, músculos, densidade óssea, doenças ósseas metabólicas. ABSTRACT Introduction: physical activity acts improving bone mineral density (BMD) because it generates deformities in

show abstract

Maintaining femoral bone density in adults: how many steps per day are enough?

Abstract: Our results suggest a gender, weight, and speed sensitivity of walking interventions for osteoporosis. In persons of low BW, the necessary steps per day to maintain BMD can be substantially greater than the often-quoted 10,000 steps.

Cited by 26 publications

References 30 publications

The role of physical activity in changes in walking mechanics with age

The role of physical activity in changes in walking mechanics with age

Short- and Long-Term Effects of Balance Training on Physical Activity in Older Adults With Osteoporosis: A Randomized Controlled Trial

Associação de força e nível de atividade física à densidade mineral óssea na pós-menopausa

Contact Info

Product

Resources

About