Health knowledge made personal
Join this community!
› Share page:
Search posts:

Dark Chocolate Improves Post-Exercise Markers

Posted Jun 01 2011 10:27pm
Posted on 2011-05-30 06:00:00 in Exercise | Functional Foods |
Dark Chocolate Improves Post-Exercise Markers

In that humans naturally produce reactive oxygen species (ROS), which are necessary for a range of functions, including cell signaling, overproduction of ROS – which can occur as a result of high intensity exercise – may overwhelm the body’s antioxidant defenses and can lead to oxidative stress, a condition that is linked to an increased risk of various diseases including cancer, Alzheimer's, and cardiovascular disease. Glen Davison, from Aberystwyth University (Wales), and colleagues have found that dark chocolate containing 70% cocoa was associated with a blunting in oxidative stress after exercise.  The researchers recruited 14 healthy men to participate in a study in which subjects consumed 100 grams of dark chocolate (70% cocoa), a control bar, or nothing. Two hours later, each subject bicycled for 2.5 hours at 60% of the maximal oxygen uptake level. The team found that the intake of the dark chocolate resulted in an increase in antioxidant status before the cycling, and reduced levels of F2-isoprostane, a marker of oxidative stress, one hour after the cycling had finished, as compared with the control bar.  In addition, insulin levels were also increased before the trial and after cycling for men who consumed the dark chocolate, suggesting a better maintenance of plasma glucose concentration.  There were no changes in markers of immune response, which is known to be affected by rigorous exercise. 

Glen Davison, Robin Callister, Gary Williamson, Karen A. Cooper, Michael Gleeson. “The effect of acute pre-exercise dark chocolate consumption on plasma antioxidant status, oxidative stress and immunoendocrine responses to prolonged exercise.” European J Nutrition, 5 April 2011

King's College (UK) team identifies a gene linked to diabetes and cholesterol that may be the "master regulator" gene that controls the behavior of other genes
Bitter orange extracts plus the citrus flavonoids, naringin and hesperidin, may boost metabolic rates without affecting blood pressure.
Schepens Eye Research Institute (US) researchers regenerate large areas of retina tissue and increase visual function, using stem cells derived from skin.
Systematic review of 35 published studies confirms that the Chinese wellness practice of Tai Chi confers a variety of physical and mental health benefits.
Among men with prostate cancer being treated with hormone therapy to suppress tumor growth, being obese may elevate the risk of their prostate cancer worsening
Consuming flavonoid-rich dark chocolate prior to exercise may decrease the potential muscle damaging effects of oxidative stress.
Northwestern University (US) researchers report that musicians are more likely to keep their memories active, as well as their hearing intact.
Among people with chronic obstructive pulmonary disease (COPD), Vitamin D supplementation may boost the benefits of pulmonary rehabilitation programs
Computer games can speed up and improve a patient's recovery from paralysis after a stroke.
Swedish team reports that high daily intakes of coffee may significantly reduce a woman’s risks of anti-estrogen-resistant estrogen-receptor breast cancer.

View Current Anti-Aging Newsletter!
Post a comment
Write a comment:

Related Searches