Effects of red light irradiation on the antifatigue abilities / 解放军医学杂志

ABSTRACT

Objective To study in clinic the potential antifatigue effect of red-light irradiation onto the soldiers exhausted by a high intensity of exercise with detection of myocardial enzymes, coagulation indices and other blood routines before and after the bio-light therapy. Methods 200 soldiers selected were assigned averagely and randomly into two groups, test group and control group, with 100 for each group. All the volunteers underwent a strong intensity and exhaustion exercise. Then the red-light irradiation of 30J/cm2?30 min once a day performed 2 weeks was given to the soldiers in test group, and the soldiers in control group received similar treatment except that daylight lamp was employed instead of red-light irradiation. The blood samples were then collected from all the volunteers before the exercise and 7d and 14d after the exercise for detecting and comparing the indexes of aspartate transaminase (AST), lactate dehydrogenase (LDH), creatine kinase (CK), creatine kinase MB isoforms (CK-MB), Hydroxybutyric dehydrogenase (HBDH), white blood cell (WBC), hemoglobin (HB), red blood count (RBC), platelet (PLT), prothrombin time (PT), activated partial thromboplastin time (APTT), plasma fibrinogen (FIB), thrombin time (TT) and calcium (Ca2+). Results The findings showed an obvious increase in the indices of HB, RBC and Ca2+ of the soldiers in the test group, the indices were significantly higher than that of the soldiers in the control group. However, no significant difference was found between the two groups in such indices as AST, ADH, CK, CK-MB, HBDH, WBC, PLT, PT, APTT, FIB and TT. Conclusion As one of the harmless biotherapies, red light irradiation is conveniently and easily applied for restoring the exhausted soldiers to their normal physical ability. Without side-effects, the red light irradiation may improve the antifatigue and endurance capacity after an individual underwent a strong intensity and exhaustion exercise. It′s valuable and acceptable for enhancement of soldiers′ combat capabilities.