Akimoto T, Kim K, Yamauchi R, Izawa S, Hong C, Aizawa K, Lee H, Suzuki K
Exercise in, and adaptations to a cold environment have no effect on SIgA. [Journal Article]
J Sports Med Phys Fitness 2009 Sep; 49(3):315-9.
AIM: The authors hypothesized that inconsistent SIgA response to exercise is caused by the different adaptative status of subjects to a cold environment. The purposes of the study were to examine whether moderate-intense exercise in a cold environment decreases SIgA and whether adaptation to a cold environment has any effect on SIgA.
METHODS: Young male skaters, short track (N=9) and inline (N=10), participated in this study. All subjects cycled for 60 min at 65% V.O2max in cold (ambient temperature: 5+/-1 degrees C, relative humidity 41+/-9%) and thermoneutral (ambient temperature: 21+/-1 degrees C, relative humidity 35+/-5%) conditions. Saliva samples were collected as follows: before and after 1hour of environmental exposure; immediately, 30-min, 60-min and 120-min after the exercise.
RESULTS and
CONCLUSIONS: Salivary SIgA and saliva flow rate decreased after the exercise in both groups only in thermoneutral conditions. The SIgA secretion rate did not decrease after moderate-high intensity exercise in a cold environment, and the SIgA response to exercise was not affected by the different adaptative status of subjects to the cold environment.
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