Objective:It is very important that oxidative stress is estimated for us to understand a player's condition in the field of sports. The purpose of this study was to investigate whether electroacupuncture has an effect on exercise-induced oxidative stress.
Methods:Ten healthy male volunteers participated in both the electroacupuncture (EA) group and the control group in a crossover design. EA at a frequency of 2 Hz and optimum intensity was performed in the subjects for 10 minutes in both the medial vastus muscles. During ergometer exercise by ramp load, respiratory metabolism including the RC point was recorded as the indication of energy metabolism. Blood was collected from the fingertips of the subjects, and then their levels of oxidative stress (d-ROMs test) and antioxidative (BAP test) were determined by using a Free Radical Analytical System (FRAS4, Wismell Instruments). Six measurements were taken;at rest, immediately after EA and following exercise, and at 20, 40, and 60 minutes following exercise.
Results:The RC point was significantly prolonged in the EA group compared with the control group. The level of oxidative stress (d-ROMs test) in the control group increased significantly at 20 minutes following exercise compared with rest (before exercise) and this increase was sustained until 60 minutes after exercise. In contrast, it did not significantly change in the EA group. Whereas the antioxidative level (BAP test) in the EA group significantly increased immediately following exercise compared with rest (before exercise), it did not increase in the control group.
Conclusion:These results suggest that electroacupuncture might enhance the antioxidative level (BAP test) and inhibit the level of oxidative stress (d-ROMs test) by effecting a change in respiratory metabolism. We propose that electroacupuncture might be useful for sports conditioning.

[Objective]To investigate whether acupuncture is effective to prevent fatigue and oxidative stress in distance runners.
[Methods]A total of 17 runners were recruited and randomized to receive acupuncture (Press Tack Needle) or placebo treatment. Subjects received treatment from licensed acupuncturists before a 10 km race. The primary outcome measures were oxidative stress, as determined by electron spin resonance (ESR), and fatigue, as assessed using the Visual Analogue Scale (VAS). Secondary outcome measures were GOT, LDH, and CPK.
[Results]Fatigue was significantly increased in both groups after the race. There was no difference in both groups.
Hydroxyl radical scavenging activity tended to increase in both groups after the race.
[Conclusion]The study found no useful acupuncture aspects of oxidative stress and fatigue.

[Objective] The purpose of this study was to investigate the effects of acupuncture on exercise-induced prolongation of information processing and decrease in attentional resource allocation, excluding the placebo effect.[Design] Crossover, double-blind randomized controlled trial[Settings] Tokyo Ariake University[Subjects] Fifteen healthy men aged 21.1 ± 0.9 years[Methods] We used a handgrip exercise for exercise loading. The handgrip was maintained for six seconds at an intensity of 40% of the maximal voluntary contraction (MVC), followed by rest for four seconds. This was alternately repeated and continued until the subject was incapable of exerting a grip strength of 40% of the MVC. To induce P300, an auditory oddball paradigm was used, and P300 was measured before and after the handgrip exercise. In the same subjects, thumbtack needle (TN) intervention (TN group) and placebo thumbtack needle (PTN) intervention (PTN group) were performed in random order. TN or PTN was applied to ST36, HT7, and GV14 before the handgrip exercise. After the experiment, we asked the subjects and practitioner about the intervention (TN or PTN). The allocation was conducted by a third party who did not participate in the experiment, and the subjects, practitioner, and measurer completed a series of all the experiment procedures and were blinded to the results.[Outcomes] The indicators for measuring the main outcomes were P300 latency and amplitude. reaction time, and masking were indicators for secondary outcomes. [Results and Conclusion] In the PTN group, P300 latency was increased significantly and P300 amplitude was decreased significantly after the handgrip exercise. In the TN group, no significant changes were observed in P300 latency and amplitude after the handgrip exercise. In both groups, reaction time was considerably slower after the handgrip exercise. The k value indicating the degree of agreement between the actual (genuine or placebo) and guessed intervention assignment was k = -0.06 for the practitioner and k = 0.66 for the subjects. No adverse events were found in this study.[Conclusions] The index changes in the TN and PTN in this study were the same as in our previous studies, and acceptable reproducibility was observed. However, the k values indicated that subject masking was inadequate. In the future, the reliability and validity of PTN must be investigated further.