Over 200 six year olds, had their bone mass measured and femoral neck and thigh bones analyzed. The physical activity of the 6 year olds was measured for 7 consecutive days. The results indicated that vigorous physical activity time was related to the strength and mineral density of the femoral neck. The researchers from Southhampton and Cambridge Universities in the United Kingdom, concluded that vigorous physical activity in childhood is likely to improve bone development and prevent osteoporosis.
Reference: Vigorous exercise strengthens hip bones in young children Retrieved from the web on 5/11/10 at http://www.physorg.com/news192711079.html.