Title |
Physical Activity and Bone: May the Force be with You
|
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Published in |
Frontiers in endocrinology, January 2014
|
DOI | 10.3389/fendo.2014.00020 |
Pubmed ID | |
Authors |
Jonathan H. Tobias, Virginia Gould, Luke Brunton, Kevin Deere, Joern Rittweger, Matthijs Lipperts, Bernd Grimm |
Abstract |
Physical activity (PA) is thought to play an important role in preventing bone loss and osteoporosis in older people. However, the type of activity that is most effective in this regard remains unclear. Objectively measured PA using accelerometers is an accurate method for studying relationships between PA and bone and other outcomes. We recently used this approach in the Avon Longitudinal Study of Parents and Children (ALSPAC) to examine relationships between levels of vertical impacts associated with PA and hip bone mineral density (BMD). Interestingly, vertical impacts >4g, though rare, largely accounted for the relationship between habitual levels of PA and BMD in adolescents. However, in a subsequent pilot study where we used the same method to record PA levels in older people, no >4g impacts were observed. Therefore, to the extent that vertical impacts need to exceed a certain threshold in order to be bone protective, such a threshold is likely to be considerably lower in older people as compared with adolescents. Further studies aimed at identifying such a threshold in older people are planned, to provide a basis for selecting exercise regimes in older people which are most likely to be bone protective. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 10 | 36% |
United States | 2 | 7% |
Canada | 2 | 7% |
Spain | 2 | 7% |
Mexico | 1 | 4% |
Venezuela, Bolivarian Republic of | 1 | 4% |
Switzerland | 1 | 4% |
Netherlands | 1 | 4% |
Unknown | 8 | 29% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 19 | 68% |
Scientists | 6 | 21% |
Science communicators (journalists, bloggers, editors) | 2 | 7% |
Practitioners (doctors, other healthcare professionals) | 1 | 4% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 1 | 1% |
Portugal | 1 | 1% |
Canada | 1 | 1% |
Unknown | 80 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 18 | 22% |
Student > Master | 10 | 12% |
Student > Bachelor | 10 | 12% |
Researcher | 8 | 10% |
Student > Doctoral Student | 5 | 6% |
Other | 15 | 18% |
Unknown | 17 | 20% |
Readers by discipline | Count | As % |
---|---|---|
Sports and Recreations | 20 | 24% |
Medicine and Dentistry | 18 | 22% |
Agricultural and Biological Sciences | 7 | 8% |
Nursing and Health Professions | 4 | 5% |
Social Sciences | 4 | 5% |
Other | 8 | 10% |
Unknown | 22 | 27% |