| Making Each Beat Count |
Eat to help your heart recover from exerciseWe all know exercise builds lean, strong muscles and bones to help with body weight and aging, but we often forget to think of the "wear-and-tear" damage it may be doing to our cardiac health. It is no longer a surprise to hear of a marathon runner or professional football player stopped in their tracks Some experts dare to say one in every 50,000 participants of an endurance event (for three or more hours) will suffer an acute heart attack or sudden cardiac death within 24 hours of the activity. A study from the University of Innsbruck in Austria measured a heart marker in men participating in a 230-km cycling race. These cyclists experienced an altitude change of 5,500 m and claimed to have no evidence of heart disease or any cardiovascular risk factors. The marker measured was troponin I, an enzyme that, when elevated, signals damage or death to heart muscles. In this particular race, the cyclists' troponin I went from zero (pre-race) to 13 (after race) in 34 per cent of the men. Normally, cardiac troponin I levels are so low they cannot be measured. Another measure of the total damage in the body is the degree of oxidative stress. Free radicals are unstable molecules that, in chemistry-speak, are missing an electron, which make them desperately scavenge the body in search of a replacement. Free radicals are produced during physical activity, as well as enter the body through daily pollution exposure and through chemicals and preservatives found in foods, skin care products and cooked foods. Free radicals become harmful in the body when they are produced in quantities the body's antioxidant supply cannot When free radical damage exceeds the antioxidant mop-up, it is called "oxidative stress." One way to measure oxidative stress is by looking at the degree of DNA damage that occurs in the body. In a study involving running a half-marathon, it was shown DNA damage was significantly elevated, even one day after the race. One would think the body was able to "recoup" the day after the event, but this study reveals oxidative stress is still in high motion 24 hours after the race. Free radicals cause cell destruction everywhere in the body, including the heart. It is important to understand how heart attacks and heart disease occur in the first place, athlete or not. Most people are familiar with low-density lipoprotein (LDL) as "bad" cholesterol, but LDL by itself is not the really harmful thing. What makes LDL really bad is when it is oxidized by free radicals, which makes it assemble in plaque formation. The plaque is what clogs and plugs our blood vessels, known as atherosclerosis. It shows up in blood tests as high cholesterol and frequently high blood pressure due to a narrowing of the passage. According to the Heart and Stroke Foundation, 40 per cent of Canadians have high cholesterol and 22 per cent of adults have high blood pressure. One heart attack occurs every seven minutes. Whole foods are the best way to get phytonutrients - Mother Nature's defence. Why whole foods? Absorption is better as Mother Nature knows the exact amount of specific nutrients the body needs for ideal absorption. Many times we hear about certain nutrients being isolated and studied, such as vitamin E or beta-carotene, and the results give no therapeutic evidence. This can be due to a few reasons. Maybe it was not the beta-carotene specifically extracted (as there are many) from, say, a carrot, but rather a combination of all the caratenoids in the carrot that provide protection. Or maybe it was not absorbed efficiently as it missed its other nutrient counterparts that helped open doorways into the blood stream. Regardless, the new focus should be using whole foods such as oats, apples, kale, spinach, carrots, red peppers, nuts and seeds as ingredients rather than items poured from a box, carton, can or jar. Another way to protect your heart is to get the edge from omega 3 fatty acid. Omega 3 acts as a natural anti-inflammatory as it reduces inflammation from cholesterol-filled blood vessels. It lessens the amount of low-density lipoprotein produced in the body, which reduces our risk of heart disease. The key form shown to be the most effective is EPA (Eicosapentaenoic acid) and DHA (Docosahexaenoic acid). As an Italian study reported in 2002, omega 3 (in these forms) brought a 45-per cent reduction in rates of sudden cardiac death and improved all-cause mortality by 20 per cent. The group taking vitamin E showed no benefits at all. Everyone is faced with times where physical stress takes over, and we feel like a bus hit us. We can take action and incorporate ways to protect our bodies and hearts, while enhancing recovery from any intense fitness program. Give yourself an extra beat with nutrition.
|



Tuna Patties
Karla's Morning Shake
Nutty Oatmeal
Citrus Sesame Salad
0 Comments