Monday, April 6, 2009

Sports Drink Can Cause Damage to Teeth


Often when we are active we may turn to sports drinks to quench our thirst. However, they may cause serious damage to the enamel on our teeth. In a news release by New York Univeristy it have been assserted that sports drinks may not be good for our teeth at all. They contain high levels of citric acid that cause tooth erosion. Sports drinks may also possibly trigger conditions leading to severe tooth damage and loss. These findings are being presented at the International Association for Dental Research in Miami. People who use sports energy drinks for energy should not brush their teeth immediately after drinking the beverages. Softened enamel is highly susceptible to the abrasive properties of toothpaste. Due to this recent development we do not have to stop consuming sports drinks at all, but do so in moderation.

Friday, April 3, 2009

How Fast Should I Run?


Often when we go to the gym, we are unsure of how fast we are supposed to run in order to get the most out of workout. However, a recent journal article by Karen Streudel-Numbers posted in the Journal of Human Evolution suggests that we all have individual optimal paces that are best for us to exercise at. At this particular pace we can cover the greatest amount of distance with the least amount of energy. For the study, nine participants ran on a treadmill at six different speeds. Researchers measured each participant's metabolic rate at every speed, using a device that provided a breath-by-breath analysis of oxygen consumed and carbon dioxide produced. The optimal speed for most women is 6.5 miles per hour or a 9 minute mile, while for men it was 8.3 miles per hour or a 7 minute mile. Any speed lower than 4.5 miles per hour is not metabollically efficient because either walking fast or running slow can be physically awkward. This study concludes that men are more efficient runners than women because they tend to be longer limbed which is better suited for running. However, keep in mind that we should not all jump out and start running at high speeds. Work up to the exercise, or else this could lead to injury and incredible muscle fatigue.