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Tag: Calcium

Scientists uncover how caffeine boosts athletes’ performance

In a study published in Friday’s online issue of the journal Applied Physiology, Nutrition and Metabolism, researchers from McMaster University Medical Centre found that caffeine tricks an athlete’s brain into delaying the perception of pain and fatigue. More importantly, it also tricks muscles into releasing more of the calcium needed to contract and relax.

“The caffeine is allowing a little bit more calcium to be released into that muscle,” said Dr. Mark Tarnopolsky. “It would make that muscle contraction a little bit stronger, so you can actually either run at the same pace with less input, or run at a faster pace for the same input.” Research from the University of Guelph showed caffeine in high concentrations can actually have the opposite effect, which is one of the reasons it is no longer banned at the Olympics.

Ron Charles from CBC talks about it in the video below:

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Calcium may reduce the risks of digestive cancers

We know that an adequate intake of calcium benefits bone health, but according to a new study published in the Archives of Internal Medicine, it appears that it may also lower the risks of digestive cancers, and particularly colorectal cancer (colon cancer).

Researchers at the National Cancer Institute analyzed data from half a million men and women over a long period of time who participated in a diet and health study. Those records were then linked to cancer registries. The men who consumed the most calcium had a 16% lower risk of those types of cancer, while women who consumed the most calcium reduced their risk by 23%.

More about this study in the interview below by CTV with Dr. Marla Shapiro:

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