How does exercise DIRECTLY cause increased bone strength an density? Increased sex hormone levels. Increased growth hormone (GH) levels. Increased parathyroid hormone (PTH) levels. Physical stress applied to bone.
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Describe how exercise and mechanical stress affect bone tissue.
Sri K.
Bone remodeling in adults is regulated and directed mainly by (a) growth hormone, (b) thyroid hormones, (c) sex hormones, (d) mechanical stress, (e) PTH.
'Many studies have suggested a link between exercise and healthy bones because exercise stresses the bones and this causes them to become stronger: A study was conducted where 30 subjects were randomly assigned to a control, with no additional exercise, low-impact; or high-impact aerobics group. The change in bone density was measured: The study concluded the following in its report; There was strong evidence from the ANOVA that the scores under high-impact aerobics were larger than the scores in the two other groups ( P- value 0.023) Which of these statements is correct? The conclusion is wrong because ANOVA tests for equality of means and not individual scores There was a 2.3% difference in mean scores among the groups. About 2.3% of individuals had lower scores under the high-impact regime than the control group. The conclusion is wrong because Analysis of Variance, or ANOVA, method compares the variance of the individual scores_'
Madhur L.
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