TY - JOUR
T1 - Salivary secretory immunoglobulin a response of elite speed skaters during a competition period
AU - Kon, Michihiro
AU - Iizuka, Taro
AU - Maegawa, Taketeru
AU - Hashimoto, Emi
AU - Yuda, Jun
AU - Aoyanagi, Toru
AU - Akimoto, Takayuki
AU - Takahashi, Hideyuki
PY - 2010/8
Y1 - 2010/8
N2 - We aimed to determine the responses of salivary secretory immunoglobulin A (SIgA) and the incidence of upper respiratory tract infections (URTI) symptoms among elite speed skaters during an actual competition period. The subjects were 8 internationalclass elite speed skaters. Saliva samples were obtained 3, 2, and 1 days before the race, the day of the race, and 1 day after the race. Salivary secretory immunoglobulin A concentration was measured by enzyme immunoassay, and SIgA secretion rate was calculated. A visual analogue scale was used to subjectively assess fatigue and tension. Daily URTI symptoms were recorded by using a questionnaire. There was no statistically significant difference in the saliva flow rate (p = 0.69), SIgA concentration (p = 0.07), and subjective fatigue (p = 0.07) during the competition period. The SIgA secretion rate recorded for the day of the race was significantly high compared with that of 3 and 2 days before and 1 day after the race (p < 0.05). The subjective tension recorded on the race day was significantly high compared with that for 3, 2, and 1 days before the race (p < 0.05). Two subjects exhibited URTI symptoms after the race. These findings suggest that salivary SIgA in elite speed skaters increased after a tapering period and that an actual high-intensity speed skating race decreased salivary SIgA in elite speed skaters. These data also suggest that the incidence of URTI symptoms might be related to the SIgA level. Coaches may need to take precautions after competitions to minimize their athletes' contact with cold viruses and adjust training load for a few days after competition to improve the decreased mucosal immune function.
AB - We aimed to determine the responses of salivary secretory immunoglobulin A (SIgA) and the incidence of upper respiratory tract infections (URTI) symptoms among elite speed skaters during an actual competition period. The subjects were 8 internationalclass elite speed skaters. Saliva samples were obtained 3, 2, and 1 days before the race, the day of the race, and 1 day after the race. Salivary secretory immunoglobulin A concentration was measured by enzyme immunoassay, and SIgA secretion rate was calculated. A visual analogue scale was used to subjectively assess fatigue and tension. Daily URTI symptoms were recorded by using a questionnaire. There was no statistically significant difference in the saliva flow rate (p = 0.69), SIgA concentration (p = 0.07), and subjective fatigue (p = 0.07) during the competition period. The SIgA secretion rate recorded for the day of the race was significantly high compared with that of 3 and 2 days before and 1 day after the race (p < 0.05). The subjective tension recorded on the race day was significantly high compared with that for 3, 2, and 1 days before the race (p < 0.05). Two subjects exhibited URTI symptoms after the race. These findings suggest that salivary SIgA in elite speed skaters increased after a tapering period and that an actual high-intensity speed skating race decreased salivary SIgA in elite speed skaters. These data also suggest that the incidence of URTI symptoms might be related to the SIgA level. Coaches may need to take precautions after competitions to minimize their athletes' contact with cold viruses and adjust training load for a few days after competition to improve the decreased mucosal immune function.
KW - Intense exercise
KW - Mucosal immune function
KW - Tapering
KW - Upper respiratory tract infections
UR - http://www.scopus.com/inward/record.url?scp=77956910158&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956910158&partnerID=8YFLogxK
U2 - 10.1519/JSC.0b013e3181aff28b
DO - 10.1519/JSC.0b013e3181aff28b
M3 - Article
C2 - 19918193
AN - SCOPUS:77956910158
VL - 24
SP - 2249
EP - 2254
JO - Journal of Strength and Conditioning Research
JF - Journal of Strength and Conditioning Research
SN - 1064-8011
IS - 8
ER -