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Exhaustive Aerobic Exercise Increases Serum Calcium Levels and Dietary Requirements

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You probably have heard of the fundamental importance of calcium as a structural component of bones . Yet, calcium is way more than the building block of our bone structure and the concrete the of the hopefully non-existent plaque in your arteries. It is also one of the major players in muscle contraction . Thus, it is not very surprising that a group of Iranian Scientists ( Pourvaghar. 2011 ) found major effects of pro-longed (15min) high intensity aerobic exercise on serum calcium levels of 12 randomly selected student athletes (22.36y; 75kg @ 1.76m): […] the participants' mean of serum calcium concentration in the first stage and before Balke exhausting aerobic exercise was measured 98.38 ng/mic L. In the second stage, i.e. after the exhausting aerobic activity, it increased to 114.96 ng/mic L. Research results indicated that the difference in serum calcium concentration between the first and second stages is significant (P= 0.0001). With the calcium that is appearing in the bl...

Athletes May Benefit from Supplemental Calcium Immediately Before or During Workouts

Calcium is one of the main minerals in the human body. It is not only necessary for teeth and bone health, but is also critically involved in muscular force production. Astongishingly there are relatively few studies investigating the immediate effect of calcium supplementation on exercise performance in athletes. A recent study by Barry et al. (Barry. 2010) is among the few which investigate the immediate (pre/during exercise supplemtation) on para-tyhroid hormone (PTH) and thus calcium resorption from bone: Male endurance athletes (n=20) completed three 35-km cycling time trials under differing calcium supplementation conditions: 1) 1000 mg calcium 20 minutes before exercise and placebo during, 2) placebo before and 250 mg calcium every 15 minutes during exercise (1000 mg total), or 3) placebo before and during exercise. [...] When compared to placebo, calcium supplementation before exercise attenuated the increase in PTH (55.8 +/- 15.0 vs. 74.0 +/- 14.2; mean +/- SE; p=0.0...
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