Triathletes participate in a grueling endurance sport, swimming, bicycling, and running long distances without rest. In training and competitions, they regularly push their bodies beyond the limits most of us can endure. But while there is no doubt that triathletes are tough, very little is known about what gives them their exceptional abilities.
Now researchers at Tel Aviv University have discovered a possible explanation. Prof. Ruth Defrin and her doctoral student Nirit Geva of the Department of Physical Therapy at TAU's Sackler Faculty of Medicine have found that triathletes feel less pain than casual exercisers. Their findings were published in the journal Pain in August.
"In our study, triathletes rated pain lower in intensity, tolerated it longer, and inhibited it better than individuals in a control group," says Prof. Defrin. "We think both physiological and psychological factors underlie these differences and help explain how triathletes are able to perform at such a high level."
Mind over matter
Nineteen triathletes and 17 non-athletes participated in the TAU researchers' study. The triathletes were people who trained for and competed in at least two triathlons per year—including in some cases the notoriously challenging Ironman Triathlon, which consists of a 2.4-mile swim, a 112-mile bicycle ride, and a 26.2-mile marathon run. The non-athletes were people who did non-competitive exercises, like jogging, swimming, or aerobics classes.
All the participants were put through a battery of psychophysical pain tests, involving the application of a heating device to one arm and the submersion of the other arm in a cold-water bath. They also filled out questionnaires about their attitudes toward pain.
In the tests, the triathletes identified pain just as well as non-athletes, but they perceived it as less intense and were able to withstand it longer. The researchers explain that detecting pain is a relatively straightforward sensory experience, whereas evaluating pain and being willing and able to endure it involves attitude, motivation, and life experience. The triathletes reported fearing and worrying less about pain, which may help explain their higher tolerance, the researchers say.
The triathletes also showed a better ability to inhibit pain than non-athletes, as measured by conditioned pain modulation—the degree to which the body eases one pain in response to another. The researchers say psychology may be a factor here too. The triathletes with less fear of pain tended to exhibit better pain regulation. Previous studies have similarly found that psychological manipulation can affect pain perception.
The chicken or the egg?
Another explanation for triathletes' lower pain ratings, higher pain tolerance, and better pain regulation is that they have taught their bodies to respond powerfully to painful stimuli through their intense training. The TAU researchers say their study—along with existing literature—suggests that psychology and physiology together enable triathletes to do what they do.
"It is very difficult to separate physiology and psychology," says Prof. Defrin. "But in general, experience is the sum of these factors."
The researchers plan to do further research to determine whether triathletes participate in their sport because they feel less pain or feel less pain because they participate in their sport. If it turns out that intense training in fact helps reduce and regulate pain, it could be used to treat people with chronic pain. Like triathletes, chronic pain patients suffer daily, but their pain is out of their control and has the opposite effect, weakening rather than strengthening pain inhibition.
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Triathletes participate in a grueling endurance sport, swimming, bicycling, and running long distances without rest. In training and competitions, they regularly push their bodies beyond the limits most of us can endure. But while there is no doubt that triathletes are tough, very little is known about what gives them their exceptional abilities.
Now researchers at Tel Aviv University have discovered a possible explanation. Prof. Ruth Defrin and her doctoral student Nirit Geva of the Department of Physical Therapy at TAU's Sackler Faculty of Medicine have found that triathletes feel less pain than casual exercisers. Their findings were published in the journal Pain in August.
"In our study, triathletes rated pain lower in intensity, tolerated it longer, and inhibited it better than individuals in a control group," says Prof. Defrin. "We think both physiological and psychological factors underlie these differences and help explain how triathletes are able to perform at such a high level."
Mind over matter
Nineteen triathletes and 17 non-athletes participated in the TAU researchers' study. The triathletes were people who trained for and competed in at least two triathlons per year—including in some cases the notoriously challenging Ironman Triathlon, which consists of a 2.4-mile swim, a 112-mile bicycle ride, and a 26.2-mile marathon run. The non-athletes were people who did non-competitive exercises, like jogging, swimming, or aerobics classes.
All the participants were put through a battery of psychophysical pain tests, involving the application of a heating device to one arm and the submersion of the other arm in a cold-water bath. They also filled out questionnaires about their attitudes toward pain.
In the tests, the triathletes identified pain just as well as non-athletes, but they perceived it as less intense and were able to withstand it longer. The researchers explain that detecting pain is a relatively straightforward sensory experience, whereas evaluating pain and being willing and able to endure it involves attitude, motivation, and life experience. The triathletes reported fearing and worrying less about pain, which may help explain their higher tolerance, the researchers say.
The triathletes also showed a better ability to inhibit pain than non-athletes, as measured by conditioned pain modulation—the degree to which the body eases one pain in response to another. The researchers say psychology may be a factor here too. The triathletes with less fear of pain tended to exhibit better pain regulation. Previous studies have similarly found that psychological manipulation can affect pain perception.
The chicken or the egg?
Another explanation for triathletes' lower pain ratings, higher pain tolerance, and better pain regulation is that they have taught their bodies to respond powerfully to painful stimuli through their intense training. The TAU researchers say their study—along with existing literature—suggests that psychology and physiology together enable triathletes to do what they do.
"It is very difficult to separate physiology and psychology," says Prof. Defrin. "But in general, experience is the sum of these factors."
The researchers plan to do further research to determine whether triathletes participate in their sport because they feel less pain or feel less pain because they participate in their sport. If it turns out that intense training in fact helps reduce and regulate pain, it could be used to treat people with chronic pain. Like triathletes, chronic pain patients suffer daily, but their pain is out of their control and has the opposite effect, weakening rather than strengthening pain inhibition.
Explore further: High pain sensitivity linked to dry eye disease symptoms
Medical Xpress on facebook
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Stories of athletes bravely "playing through the pain" are relatively common and support the widespread belief that they experience pain differently than non-athletes. Yet, the scientific data on pain perception in athletes ...
High pain sensitivity linked to dry eye disease symptoms
Aug 02, 2013
(HealthDay)—Pain sensitivity and pain tolerance are associated with symptoms of dry eye disease (DED), according to a study published online Aug. 1 in JAMA Ophthalmology.
Musicians suffering for their art
Oct 02, 2013
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Pain can be contagious
May 08, 2013
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Baseline pain severity predicts worse long-term LBP outcomes
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(HealthDay)—Patients' baseline pain and the perception that their pain will persist are significant predictors of poor outcomes for low back pain (LBP) over the short and long term, according to a study ...
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