KINESIOL 1C03 Study Guide - Midterm Guide: Amenorrhoea, Bulimia Nervosa, Premature Ovarian Failure
15 Sep 2016
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Physical activity and osteoporosis: physiology of bone and osteoporosis, risk factors, pa and osteoporosis. Mechanical support and protection of thoracic cage, brain, internal organs. Reservoir for minerals: 99% of body ca2+ lie in bone, phosphorus, 60% of body"s magnesium. Bone is a dynamic tissue, undergoing continuous cycles of formation and resorption (remodeling), based on the activity of 2 specific cells resorption: breaking bone down and taking calcium out of bone cycle of remodelling takes approx. 10 years on average to break down and rebuild bone osteoblasts: formation; osteoclasts: resorption. Measure bone strength by measuring bone density. Osteopenia: decrease in bone mass with aging (bmd of 1-2. 5 sds below mean) T score: comparing an individual of any age to a 30 year old average bone mineral density. 30 year old standardized benchmark peak bmd. Z score comparing to people of your own age group, only tells you where you are relative to people of your own age less useful.
