lnternational Research Centei for Tra Purpose The purpose of tliis study was to evaluate the effects of astaxanthin (ACT),ingestionon the activities of the autonomicnervous system (ANSI. in previous reports, ACT Ingestionincreasingdata of an antioxidantactivities and enhanced gbiilty in the muscle co&action. in this experimentwe plannedto investigate the ANS and the *espiratorymetabolismduring the prolongedexetcises of three stepwise ntensities.The design of thts experimentwas a double biind crossover study.
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B i&erbmt protocd : Exercise btre8s test)
Method The experiment8were designedto take orally ACT and piacebo (CON) capsule daily far two weeks by volunteers.The exercise stress test were done before and after these ingestion. IbSubjects : 18 healthy male volunteers (35.8 f4.51 years old) who signed the informedconsent @Testcapsule : 0 Astaxanthin (5mg) : ACT @ placebo : CON @Measuremetit : @ CV- LF/HF, HF/TF of heart rate variability @ VE. VOJkg, VCOZ Expired GasesAnalysis of 0 Cholesterol,Catechoiamine blood of Ic Analysisof HRV : MemCalc program Low frequencyband : LF (0.03-0,15Hd High frequencyband : HF (0.15-0.4Hz) Total frequencyband : TF (0.03-0.4Hz) : Coefficient of variance of RR interval $?HF : Sympatheticnerve activities (SNA)
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Rest
Exl
IX! B3 iritialstr~test I
R8cl
Rsc2
lr@estlcnofthetestcapsde~@CTorCCN) fortwoweeks
lrtgestivn the test cawuie+tACT CONIfor hrroweeks vf or t find8tresste8tN
Resultsand Discussion Duringthe exercise of the intensity of 7O%HRmax, two parametersof CVRR HF/TF* 100 significantlyincreasedafter and ACTIngestion,more than those of CONingestion (p<0,05), Additionally, and VOz/kg with ACT ingestionshowed significant VE fla, decreaseduring 7096HRmax exercise more than those with CON (P