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Showing posts with the label dehydration

Effects of dehydration on a body in motion

  Although water has no caloric value, it’s the most essential nutrient required in your diet on a daily basis. Your body is made of water. It’s part of your blood, brain, heart, lungs and bones. As it relates to exercise, water maintains blood volume, reduces the risk of heat stress, regulates body temperature and is involved in muscle contractions. To optimize your hydration status, you must be an active participant in your hydration regime by consuming adequate fluids and electrolytes on a daily basis - as well as before, during and after exercise. Leaving hydration to chance or ignoring dehydration symptoms can be hazardous to health and performance. Sadly, once you are dehydrated, you can't 'make-up' for fluids lost. Going into a workout dehydrated and/or not replenishing fluids and electrolytes lost during exercise can cause great strain on your cardiovascular system. As dehydration reduces plasma volume, blood becomes thicker and retains more sodium. This makes blood...

Nutrition tips for training in the heat

Triathletes and endurance athletes are very susceptible to dehydration and even more so, a heat-related injury at this time of the year.  Whereas in the cold/cooler months of the year, athletes can get away with haphazard fueling and hydration strategies, now is the time in the year when a poorly planned (or early-season) fueling/hydration regime will negatively affect training sessions, racing potential and health.    Let it be known that training in the heat is incredibly stressful for the body. Seeing that training (in any environment) already creates difficulty for the body to adequately digest and absorb nutrients and fluids, you can imagine why so many athletes experience harmful health issues, GI struggles, extreme fatigue and so many more issues during the summer months when training for an event. If you think about those who succeed well in endurance events, every athlete is getting tired from glycogen depletion and dehydration and central nervous syst...

The dehydrated athlete - hydration tips

Many factors contribute to the total volume of fluid lost from the body on a daily basis - environmental conditions, size/surface area of an individual, metabolic rate, physical activity load (ex. frequency, duration, intensity), sweat loss, diet composition and volume of excreted fluids.  The daily fluid loss in cool weather (less than 70 degrees F) can be around 2300 mL (with much of that as fluid lost in urine) whereas in warm/hot weather (above 85 degree F weather) it can total 6600+ mL (with most of that lost as sweat).  Once again, as mentioned in my previous post,  relying on thirst to initiate daily water (or sport drink consumption during workouts) is a false recommendation to ensure adequate fluid consumption. I hear it over and over again that athletes feel that they don't need to drink because they aren't thirsty but then when they do feel thirsty, they do not provide themselves with opportunities for frequent drinking and it becomes uncomfortabl...

The dehydrated athlete

It surprises me how many athletes assume they are just fine just "getting by" in workouts by not fueling or hydrating during the workout. Could you be underfueling and more importantly, underhydrating during your workout? Maintaining adequate hydration during workouts and especially in races is one of the most important nutrition strategies for optimizing performance and for keeping the body in good health.  Every athlete knows that even losing a small percentage of body weight can affect health and can impair performance so why even think twice about going for a swim, bike or run without adequate fluids? I find myself spending a lot of my time educating athletes on what they are not doing well (or consistently) which could be sabotaging workouts and one area is speaking to triathletes and runners to try to get them to consume adequate fluids during workouts. With so many athletes coming to me looking to boost performance, improve health or to reach body comp...

Avoid dehydration with these hydration tips for endurance athletes

Triathletes and endurance athletes are very susceptible to dehydration and even more so, a heat-related injury.  What must be understood is that the body is compromised when we place intentional training stress on the body through training and racing. However, what is even more serious is that many athletes are not taking the daily precautions to be "healthy" on a day to day basis. So as you can imagine, when an athlete throws in 8,10 or more hours of training per week, there is even more confusion on how to meet daily and sport needs but very little time to even make time/energy to ensure that the body is healthy going into workouts and well fueled/hydrated during workouts.  Because endurance racing is far from normal or easy for the human body to handle, health professionals acknowledge that metabolic demands during training/racing in long distance events are not easy to meet. That is, it is very hard for the body to take in the appropriate amount of calories, ...