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n International SportMed Journal - Changes of immunological markers in elite and amateur triathletes : original research article
This study was designed to examine the changes of immunological markers in elite (n = 7) and club amateur (n = 8) triathletes, who completed the 2006 TONG YUNG international triathlon race, by investigating changes of total amounts of leukocytes, neutrophils, lymphocytes, monocytes, immunoglobulins (Igs), IL-6, CK and CRP. Three days prior to the race, all participants had a blood sample drawn from an antecubital vein. Blood samples were also taken immediately after finishing the race, and during recovery periods (2-hours after and 7-days after). The total number of leukocytes immediately after triathlon race was significantly increased in both groups and in the recovery times (p < .05). The number of neutrophils immediately after triathlon race was also significantly increased in both groups and significantly increased in the recovery times (p < .05). The elite triathletes (EG) recovered after 7 days.
In the lymphocytes and monocytes, there were significant increases immediately after the triathlon and in the recovery periods in both groups (p < .05). However, with regard to the monocytes, there were no differences in the period of 7-day R in both groups. With regard to the immunoglobulins, IgA and IgG were significantly increased after the triathlon, while there was no significant increase in the IgM. In IL-6 and CK, these were significantly increased after the race. CRP was, however, not significantly changed.
In conclusion, the triathlon caused an increase in leukocytes, neutrophils, IgG, IL-6, CK, and CRP in the Elite Group (EG) (IgG and IL-6 and CRP was not significantly changed in the Recreational Group (RG)) and there was a decrease in lymphocytes, monocytes, IgA (RG only), and IgM (RG only). Also, elite triathletes responded well and recovered more quickly than the amateur triathletes after the prolonged exercise.
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