Durham University | April 2019 | How to keep your bones strong
Durham University’s Department of Sport and Exercise Sciences hast studied more the physical activity and sedentary behaviour of more than 200 men and women aged 62 from the Newcastle Thousand Families Study. As part of this research each participant wore a monitor for seven days which measured their levels of activity. The participants also received a bone density scan of the spine and hip.
The researchers found simply achieving your 10,000 steps a day can be important for keeping your bones strong. Another finding indicates that the more time people in their sixties spent sitting down, the lower their bone strength was.
The study is the first to show that a sedentary lifestyle in males is associated with a greater risk for osteoporosis.
In addition the study shows that men spent more time sitting still than women and those who were the most sedentary, had the lowest bone strength, particularly in their lower back. (Source: Durham University)
The influence of sedentary time and habitual physical activity on the bone health of middle aged adults is not well known.
Bone mineral density (BMD) and hip bone geometry were evaluated in 214 men (n = 92) and women (n = 112) aged 62.1 ± 0.5 years from the Newcastle Thousand Families Study birth cohort. Accelerometry was used to measure physical activity (PA) and sedentary time over 4 days. Regression models were adjusted for clinical risk factor covariates.
Men were more sedentary than women (P less than 0.05), and sedentary time was negatively associated with spine BMD in men, with 84 minutes more sedentary time corresponding to 0.268 g.cm−2 lower BMD. In men, light PA and steps/day were positively associated with bone geometry and BMD. Steps/day was positively associated with bone geometry and femur BMD in women, with a positive difference of 1415 steps/day corresponding to 0.232 g.cm−2 greater BMD.
Sedentary time was unfavourably associated with bone strength in men born in North East England at age 62 years. Higher volumes of light PA, and meeting the public health daily step recommendations (10 000 steps/day) was positively associated with bone health in both sexes.
Full reference: Hind, K., Hayes, L., Basterfield, L., Pearce, M. S., & Birrell, F. |2019| Objectively-measured sedentary time, habitual physical activity and bone strength in adults aged 62 years: the Newcastle Thousand Families Study| Journal of Public Health| https://doi.org/10.1093/pubmed/fdz029
Rotherham NHS staff can request a copy of this article from the Library