During a recent “lunch-and-learn” meeting at our office, several younger staff members were discussing the use of supplements to compliment their fitness routines. One such staff member, Lily Smith, a physical therapy student aid at our clinic from the University of Scranton, is also a serious weight training and fitness enthusiast and shared her experience with creatine supplements with the hope of educating others, especially those preparing to “get fit” in 2024!
A National Health Interview survey found the creatine use among adolescents and young adults to be 34%. It is also very popular in the military with 27% average usage. While athletes and exercise enthusiasts use protein shakes and creatine supplements with hopes to improve size, strength and performance, it appears that most users do not have a full understanding of the risks and benefits. In view of this, today address the use of creatine in strength training and make recommendations based on the literature.
As long as I can remember, young athletes would take or do anything that they believed would improve their speed, strength, agility and athletic edge in order to succeed in sports. Running with weights wrapped around the ankles, drinking raw eggs and whole milk, and consuming copious amounts of beef, pork, and chicken were not unusual. Today, it may not be much different. However, the products do not come from our kitchen cabinet and tremendous misinformation is associated with it. Creatine is one example that was purported to enhance performance as early as the 1970’s but only gained popularity in the 1990’s. 40% of all college athletes and 50% of professional athletes admit to using creatine at some point, despite a lack of scientific evidence to support its effectiveness or safety.
This supplement is a natural substance that turns into creatine phosphate in the body. Creatine phosphate helps produce adenosine triphosphate (ATP), which provides energy for muscles to contract. While the body produces some creatine, it can also be found in foods rich in protein such as meat and fish. Manufacturers claim that creatine use will improve strength, increase lean muscle mass and aide in the recovery from exercise induced fatigue.
While creatine is popular among young people due in part to its availability, very little research has been done in people under 18 years of age. Even in the few studies conducted on adults, the results regarding efficacy are mixed. Some studies show that creatine may improve strength performance due to the recovery cycle of ATP. In theory, the use of creatine is purported to allow one to recover more quickly from exercise. For example, shortly after lifting heavy weights to failure, a quick recovery might allow the weight lifter to lift an additional set of repetitions to increase the duration of intensive training. Therefore, based on this theory, one must work out to complete failure during training to benefit from creatine. However, it is important to remember, there is no evidence that this purported benefit is realized in performance improvement in weight training or endurance sports.
Furthermore, no studies support the notion that it improves performance in endurance sports. Also, research does show that not all users are affected by creatine the same way. Most users fail to find any benefit at all. More concerning to this author is the fact that there are no guidelines for safety or disclosure of side-effects from long term use. Make no mistake, based on the research and current wisdom, CREATINE IS AN UNPROVEN TREATMENT SUPPLEMENT!
If one decides that creatine is a product they would like to use, despite the lack of evidence for its effectiveness, there are recommendations that one should follow for proper use. But there is no consistently established dose. Some studies have found 25 grams daily for 14 days as a “kickstart” dose or “loading” phase followed by 4-5 grams (or 0.1 g/kg of bodyweight) daily for 18 months with few side effects such as: muscle cramps, dehydration, upset stomach, water retention/bloating with weight gain. It is important to remember when establishing a dosage that many weight training supplements already contain creatine and in high doses excess creatine is excreted by the kidneys. It is also recommended that creatine users “wean off” the product when they decide to discontinue use.
Remember, an average adult in the United States receives 1 to 2 grams of creatine each day from a normal, well-balanced diet. Creatine is naturally found in meat, poultry and fish and theoretically, one could increase their creatine intake through dietary changes. Some manufacturers recommend 10 to 30 grams per day with a maintenance dose of 2 to 5 grams per day for athletic performance. Creatine is available in many forms; tablets, capsules and powder. It should be kept in a cool, dry place out of direct sunlight.
Creatine use is not recommended if you are pregnant, breast feeding, have kidney disease or bipolar disorder. There are many reported side effects associated with creatine use such as; water retention, nausea, diarrhea, cramping, muscle pain and high blood pressure. It is recommended that users consume large quantities of water when taking creatine to prevent dehydration. It may be very dangerous to use creatine when dehydration or weight loss is associated with an activity such as wrestling or summer sessions during football.
Furthermore, some studies show that large amounts of carbohydrates may increase the effects of creatine and caffeine may decrease the effects. Users are warned that using creatine with stimulants such as caffeine and guarana (a Brazilian plant extract similar to caffeine found in energy drinks) can lead to serious cardiac problems. The effects of creatine supplements on the many organ systems of the body are unknown. High doses may cause kidney damage. Although no cases have been reported in the literature, it is not known how it may interact with other supplements, over-the-counter medications and prescription drugs.
In conclusion, despite the lack of scientific evidence that creatine is more effective than proper nutrition and effective weight training, it remains a popular, easily available supplement purported to improve strength, endurance and performance in athletes. While relatively safe if taken as directed, it is always wise to consult your physician, especially if you have a history or risk of kidney problems. And, by the way, Lily did not feel that creatine supplements made any significant difference, positively or negatively. She no longer uses it due to the expense, inconvenience and lack of scientific evidence to support its efficacy.
Sources: University of New England; Medicine & Science in Sports & Exercise; NIH and Lily Smith, PT student, University of Scranton, Student PT aide, Mackarey Physicla Therapy
.Visit your 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 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!
