抄録
The experiment aimed at knowing whether exercise stress on acute phase proteins may be influenced differently, depending on bright (5,000 lx) or dim (50 lx) light exposure during a day.Eight healthy women volunteered as the subjects. The subject entered a bioclimatic chamber at 08:00 h on first day.The light intensity measured at eye level from 08:00 to 18:00 hours was either 50 lx in the dim light condition (first day) or 5,000 lx in the bright light condition (second day), 10 lx from 18:00 to 23:00 hours.Subjects exercised moderately for 20 min by a bicycle ergometer with 60 W intensity.Blood samples were drawn 30 minutes later after the end of exercise on first, second and third day. Concentrations of&alpha1-antichymotrypsin (ACT), transferin (Tf), &alpha2-macroglobulin (&alpha2-M) and haptoglobulin (Hp) were analyzed by the usage of immunoelectrophoresis. Interleukin-6 and TNF&alpha concentrations were analyzed by ELISA kits. There did not exist any significant differences for acute phase proteins on first day between exercise and no exercise. ACT was significantly higher (p<0.05) on 3rd day morning than on 2nd day morning, suggesting that an increase of ACT due to the exercise stress was amplified by bright light exposure during one diurnal day before the exercise stress was applied to the subjects. [J Physiol Sci. 2006;56 Suppl:S97]
