新生儿黄疸用光疗是因可使胆红素发生光化学反应。作者发现一健康成人跑步后出现胆红素光产物。提示这种反应可能较常见,故作进一步研究.使一人于中年在室外跑步1.5小时(约23Km),跑步前、后取血标本,跑步中仅穿短衣和鞋.跑步前限制直接接触日光或电灯光至少12小时,静脉穿刺和检验分析均在安全光下进行。跑步后血标本有一明显的新的色谱峰,经鉴定为胆红素的42,15E光异构体。在三次实验中,血浆总胆红素有13～15%转变为光异构体。而在阴天以最大速度跑并不 Neonatal jaundice with phototherapy because of bilirubin photochemical reactions occur. The authors found a bilirubin photoproduct after a healthy adult ran. Suggesting that this reaction may be more common, so for further study, so that a person in the middle-aged outdoor running 1.5 hours (about 23Km), running before and after taking blood samples, running only wear short clothing and shoes before running limit direct contact Daylight or electric light for at least 12 hours, venipuncture and test analysis are carried out under safe light. After running the blood sample has a clear new peak, identified as bilirubin 42,15 E optical isomers. In three experiments, plasma total bilirubin 13 ~ 15% into the optical isomers. In the cloudy days to run at maximum speed does not