View clinical trials related to Adaptation Reaction.
Filter by:Athletes, especially in endurance sports, are at increased risk of oxidative stress and inflammation-related diseases and injuries. The production of reactive oxygen and nitrogen species (RONS) and inflammatory markers increase during exercise and especially during altitude training. Antioxidant supplementation is commonly used among athletes in the belief that it prevents oxidative stress and oxidative damage. A transient increase of RONS is however necessary to activate signaling cascades initiating training adaptation. Antioxidant supplementation has been shown to inhibit the exercise effects in several independent studies, possibly by interfering/reducing the signal cascades initiated by RONS. However, it is unknown whether a high intake of antioxidant rich foods can affect the amount of RONS, inflammation markers and/or training adaptation. The investigators want to examine whether an increased intake of natural antioxidants in the form of antioxidant-rich foods fruits, vegetables and berries, in line with the official Norwegian dietary advice can affect antioxidant status, immune function and training adaptation associated with altitude training in Norwegian elite athletes.
A one-year intervention study of 41 healthy elderly men aged 65-75-years.Of these, 24 subjects are untrained men with no regular training activity for the last 5 years. After medical screening and pre-testing, they will be randomized into a football group (n=9), a strength-training group (n=9) or a sedentary control group (n=6). Additional 17 subjects are recruited from local football clubs and have been active football players for the last 40 years. Training will be performed 3x1 hour per week and evaluation will take place after 0, 3 and 12 months. Primary endpoints will be changes in cardiac and vascular structure and function measured by advanced echocardiography (tissue Doppler and speckle tracking imaging), and peripheral arterial tonometry (Endo--‐PAT device). Secondary endpoints will be evaluation of potential changes in VO2 max, blood pressure, muscle capillaries, lipid profile, circulating catecholamines, body composition, and insulin resistance.