Sorry, if your going to quote from *science* at least tell us who wrote the science, who? when? where? how? A study does not mean that "science says", it means the researches found out something through the use of science. They are using science to reach an answer from a question.
Wikipedia .....
Science (from the Latin scientia, meaning "knowledge" or "to know") is the effort to discover, and increase human understanding of how the physical world works. Through controlled methods, scientists use observable physical evidence of natural phenomena to collect data, and analyze this information to explain what and how things work. Such methods include experimentation that tries to simulate natural phenomena under controlled conditions and thought experiments. Knowledge in science is gained through research.
Your quoted resource....
http://www.nature.com/sc/journal/vaop/ncur.../sc200836a.html=========================================================================
Original Article
Spinal Cord advance online publication 29 April 2008; doi: 10.1038/sc.2008.36
Effect of weight-bearing activities on bone mineral density in spinal cord injured patients during the period of the first two years
V Alekna1,2, M Tamulaitiene1,2,3, T Sinevicius1,4 and A Juocevicius1,4
1. 1Faculty of Medicine, Vilnius University, Vilnius, Lithuania
2. 2Institute of Clinical and Experimental Medicine at Vilnius University, Vilnius, Lithuania
3. 3National Osteoporosis Center, Vilnius, Lithuania
4. 4Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
Correspondence: Dr V Alekna, Medical Faculty, Vilnius University, Zygimantu street 9, Vilnius LT-01102, Lithuania. E-mail: vidmantas.alekna@ekmi.vu.lt
Received 3 August 2007; Revised 5 March 2008; Accepted 26 March 2008; Published online 29 April 2008.
Top of page
Abstract
Study design:
Prospective study on patients with spinal cord injuries.
Objectives:
To evaluate the loss of bone mineral density (BMD) in various body regions of patients with spinal cord injury (SCI) and its dependence on weight bearing activities during 2 years post injury.
Methods:
BMD of the whole body was measured in patients with SCI. Baseline measurement was performed in 6–16 weeks after SCI, the second and the third—respectively 12 and 24 months after injury. Fifty-four subjects were selected and divided into two groups: standing and non-standing. From these groups 27 pairs were made according to gender, age and height.
Results:
There was found to be a well-marked decrease in BMD values for lower extremities, but there was no significant difference between paraplegic and tetraplegic patients 1 and 2 year after injury. Leg BMD reduced by 19.62% (95% CI, 17–22% ) in the standing group and by 24% (95% CI, 21–27% ) in non-standing group during the first year. Two years after SCI patients in standing group had significantly higher leg BMD—1.018 g/cm2 (95% CI, 0.971–1.055 g/cm2) than in the non-standing group—0.91 g/cm2 (95% CI, 0.872–0.958 g/cm2) (Pless than or equal to0.0001).
Conclusion:
SCI patients who performed daily standing greater than or equal to1 h and not less than 5 days per week, had significantly higher BMD in the lower extremities after 2 years in comparison to those patients who did not perform standing.
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I'm not telling people dont stand, I'm saying that there are a lot of other biological and phycical events which need to take place for the whole process to be of any benefit. You have to remember that looking at an average change in bone density, does not suggest that you personally will have the same results. There are plenty of studies to browse through, I suggest you keep reading and learn more about the whole process of bone regeneration and placement. You will never maintain your bone density by standing alone, or with any other therapy, you are just slowing it down, but not considerably.
I've had three bone density test as part of a trial.. I was in the non standing group FES group with 39 others. What was said at the end of the trial in a consultants room was alot different to the published pdf I was mailed 6 months later! Theres alot more in it than just standing or not standing, using FES or not using FES.
Most studies are coralated using the percieved positives and negatives from a series of check boxes that the patient ticks, do you think that is scientific? You might check all the positive boxes, because you believe thats it does benefit you in all those areas, because thats what you were told.. you were conditioned to believe in something because someone told you it was fact. How often do you see these words in the studies....percieved, may benefit, could benefit, possible benefits, modest.
Another thing to explore is Fowlers Survey Research Methods, which are now commonly used in research. It suggests that the observations, (the amount of people to take part in a research study), need to be adequate to overcome sampling error (ie, variation about the true value from chance samples differing from file whole population. It also states "Fowler found that sampling error is reduced as sample sizes increase to 150, but after that point, there are only modest gains from increasing sample size". In the study you quoted from there were only 54, which in a study this important, most would say is inadiquate. Also .. only using gender, age and height, rather general, not enough to calculate from. Were they para or quad, what was the asia level average of the group, any on medication, any using active standing as apposed to passive standing.. it does not say.
There are so many factors to consider there has never been CONCLUSIVE evidence from any study conducted.