Fitness Factoids: Volume 15
No Link Between HRT and Cancer
According to new information released 
by the American Urological Association there is no increased for cancer by men who use testosterone therapy as opposed to those who don’t. Some who oppose HRT point to the fact that certain cancers are androgen dependent, and believe that supplemental testosterone could potentially increase the risk of acquiring certain cancers. According to Dr. Michael Eisenberg of the Baylor College of Medicine "There appears to be no change in overall cancer risk for men utilizing long term testosterone replacement therapy," the authors conclude. "There may be a decrease in prostate cancer risk for men on TRT."
Farmed Salmon Can Increase Insulin Resistance
A study released by the online journal PLoS One concluded that farm raised salmon that are fed soybean oil have the composition of their fatty acids changed and if eaten regularly could potentially cause insulin resistance. The study aimed to compare the effects on farm raised salmon that were fed fish oil and farmed salmon that were fed vegetable oil. The study concluded that the salmon that were fed vegetable oil had lower levels of omega-3 fats, elevated levels of omega-6 fats, along with elevated levels of linoleic acid, which was reported to exaggerate insulin resistance and increase fat accumulation in the liver.
http://www.ncbi.nlm.nih.gov/pubmed/23301026
Even Shorter Bouts of HIT Cardio Improve Fitness
New research conducted by the Norwegian University of Science and Technology has found as little as one four-minute high intensity interval may be enough to improve fitness and VO2max in inactive individuals. The small study was comprised of 24 individuals who were inactive, but otherwise considered to be healthy. During the study participants were split into two groups. One group, comprised of 13 individuals, participated in a program that required them to do four intervals that were each four minutes long at 90% of their max heart rate. The second group was required to do a single four minute bout of high intensity exercise at 90
% of their max heart rate. At a follow up examination the blood pressure of both groups was measured. Group one, those of whom did multiple intervals, was found to have a 13% decrease in blood pressure. Upon examination of group two, which did only the single interval, a 10% reduction in blood pressure was noted leaving researchers to believe that as little as four minutes per week of high intensity exercise will benefit previously inactive individuals.
http://www.sciencedaily.com/releases/2013/05/130529190821.htm
Vegetarian Diets Associated with Lower Risk of Death
According to a study being released by the J
ournal of the American Medical Association (JAMA) of Internal Medicine vegetarian diets are now being associated with a lower risk of mortality. The alleged study, which was comprised of over 70,000 individuals, states that vegetarian diets are associated with reductions in several chronic diseases such as hypertension, metabolic syndrome, type-2 diabetes, and ischemic heart disease. Researchers administered a dietary questionnaire to assess participants and found that those who were self identified as having a vegetarian diet had a 12% lower risk of mortality compared to other participants.
http://www.medicalnewstoday.com/releases/261511.php
Blueberries and Strawberries
Cut Heart Attack Risk in Women
A recent study published in the journal Circulation stated that blueberries and strawberries could potentially cut the risk of heart attacks in women. According to research conducted by Professor Eric Rimm women who consumed blueberries and strawberries at least three times per week were 32% less likely to suffer heart attacks. Rimm’s research suggests that the flavonoids contained in the berries act as vasodilators, expanding blood vessels in the heart, and thus countering the damaging effects of arterial plaque buildup.
http://www.digitaljournal.com/article/348895
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