The 27th Steamtown Marathon is three months away and, despite the warm weather, many local runners are deep into training. With serious heat waves of summer, any prolonged endurance activity in minimal to moderate heat can be dangerous if not prepared. Adequate hydration is critically important, not only to those training for a marathon but also for other outdoor endurance activities such as cycling, hiking, long distance power walking, etc
Next to oxygen, water is the nutrient most needed for life. A person can live without food for a month, but most can survive only three to four days without water. Even though proper hydration is essential for health, water gets overlooked as one of the six basic nutrients. Dehydration occurs when the amount of water taken into the body is less than the amount that is being lost. Dehydration can happen very rapidly (i.e. in less than eight hours); the consequences can be life threatening and the symptoms can be alarmingly swift.
In the body, water is needed to regulate body temperature, carry nutrients, remove toxins and waste materials, and provide the medium in which all cellular chemical reactions take place. Fluid balance is vital for body functions. A significant decrease in the total amount of body fluids leads to dehydration. Fluids can be lost through the urine, skin, or lungs. Along with fluids, essential electrolytes, such as sodium and potassium, are also perilously depleted in a dehydrated individual.
The risk of dehydration is not limited to endurance athletes and outdoor enthusiasts. Dehydration is the most common fluid and electrolyte disorder of frail elders, both in long term care facilities and in the community! Elders aged 85 to 99 years are six times more likely to be hospitalized for dehydration than those aged 65 to 69 years.
Is water adequate to prevent dehydration? Will a sports drink improve my performance? While some answers to these questions apply generally to all, others vary according to the temperature, humidity, length of time and intensity of the activity and condition of the athlete.
Proper hydration is essential for the comfort and safety of the recreational and serious athlete. Hydration is critical to maintain cardiovascular function, body temperature and muscle performance. As temperature, humidity, intensity, and duration of exercise increase, so too does the importance of proper hydration. Excessive sweating can lead to a loss of blood volume which requires the heart to work much harder to circulate you blood through your body.
Dehydration is a major cause of fatigue, loss of coordination, and muscle cramping leading to poor performance. Prehydration, (drinking before exercise) is the first step in preventing dehydration. Marathon runners, other long-distance runners, and cyclists often prehydrate1-2 days before a big event. Rehydration, (drinking during or after exercise) is the second step in preventing dehydration. While athletes may be more vulnerable to dehydration, all persons engaging in exercise would benefit from increased performance, delayed muscle fatigue and pain by maintaining adequate hydration. Proper prehydration would include drinking 12-16 ounces of water 1-2 hours before exercise. Athletes with other health issues should consult their family physician before engaging in long distance endurance sports.
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This article is not intended as a substitute for medical treatment. If you have questions related to your medical condition, please contact your family physician. For further inquires related to this topic email: drpmackarey@msn.com
Paul J. Mackarey PT, DHSc, OCS is a Doctor in Health Sciences specializing in orthopaedic and sports physical therapy in Scranton and Clarks Summit. Dr. Mackarey is in private practice and is an associate professor of clinical medicine at Geisinger Commonwealth School of Medicine. For all of Dr. Mackarey's articles, visit our exercise forum!
Runners will attempt to conquer 26.2 miles from Forest City to downtown Scranton in the 26th Annual Steamtown Marathon this Sunday. Participants may want to consider new research that suggests the use of compression socks may prevent post race blood clots.
Completing the long and arduous 26.2 mile journey is not an easy task. In fact, the mechanical and physiological toll on your body is tremendous; from painful joints, muscles, tendons, to black and blue toes. Not so obvious, however, is the damage to your deep veins and tissues of the circulatory system. New research indicates that strenuous endurance exercise, such as marathon running, stimulates the clotting mechanisms in your body in response to the multiple micro traumas sustained over 2 or more hours. While most healthy athletes will naturally heal from post exercise clot formation, others may be at risk…those traveling more than 1 hour (by car, bus, train or plane). The risk increases substantially for those with a longer period of travel/sitting post-race, history of previous trauma, blood clots or have the genetic predisposition for clot formation.
Compression socks are familiar to most people as the tight knee-high support stockings worn after a surgical procedure such as a knee or hip replacement to prevent blood clots. They are made with a special fabric and weave design to provide graduated compression (stronger compression at foot and ankle and less at the top of the sock) to promote better circulation and movement of fluids from the foot, ankle and calf back to the upper leg and ultimately the heart. Compression socks work similarly in runners. As the stagnant fluid with lactic acid and other byproducts of exercise is removed from the space, fresh blood, nutrients and oxygen is replaced to foster healing of micro damage to tissue and promote more efficient use of the muscles.
The Journal of Strength and Conditioning Research published a study that found wearing compression socks improved running performance. However, similar studies have failed to support this claim. One finding that has been repeatedly supported in the literature, including The British Journal of Sports Medicine, found that compression socks worn in soccer players and runners improved the rate and magnitude of recovery. Moreover, recent studies, including a study with the Boston Marathon, have demonstrated the reduction in clotting mechanisms in those wearing compression socks AFTER the marathon, as compared with those wearing “sham” socks. Benefits seem to be less obvious for short duration activities or when running 10km or less.
In conclusion, only time will tell if compression socks will improve performance in runners will or be merely a fad based on placebo or true fact supported by scientific research. Based on current wisdom, these socks may offer value and benefit AFTER activities of long duration (more than 1 hour) or long distance running (more than 10km) to expedite the recovery from exercise-induced blood clot formation, muscle soreness from the accumulation of lactic acid and other muscle damage byproducts.
It is this author’s opinion that this product is worth a try. However, whenever you try something new for your sport, trials should occur during practice and if successful used during competition. Consider trying a lower compression to begin (the socks come in different degrees of compression). Even if one is hesitant to use the product while running, it appears the greatest value of the sock is after a prolonged training session or competition to reduce exercise-induced muscle soreness and prevent blood clots, especially in athletes at risk for clotting and those traveling for an hour or more after the race. Additionally, in view of the fact that some studies which showed only minimal to moderate improvement in well-trained athletes, it may be that those in greater need, such as deconditioned individuals attempting to begin a fitness program and novice weekend athletes, may benefit more from compression socks than elite athletes.
TAKE HOME: Runners, cyclists, triathletes, soccer players and others participating in endurance sports should consider compression socks, if not during the activity, certainly following the activity for 24 to 48 hours…especially those at risk for blood clots and those traveling for more than one hour after the race.
Sunday consider trying compression socks and see if they work for you during and more importantly, after your long training runs.
Where to find compression socks:
2XU Compression Racing Sock – www.2XU.com
Scranton Running Company – Olive Street - Scranton
Visit your family doctor regularly and listen to your body.
EVERY MONDAY – Read Dr. Paul J. Mackarey “Health & Exercise Forum!” via Blog
EVERY SUNDAY in "The Sunday Times" - Read Dr. Paul J. Mackarey “Health & Exercise Forum!” in hard copy
This article is not intended as a substitute for medical treatment. If you have questions related to your medical condition, please contact your family physician. For further inquires related to this topic email: drpmackarey@msn.com
Paul J. Mackarey PT, DHSc, OCS is a Doctor in Health Sciences specializing in orthopaedic and sports physical therapy. Dr. Mackarey is in private practice and is an associate professor of clinical medicine at GCSOM. For all of Dr. Mackarey's articles, visit our exercise forum!
