原子在帶負電的狀況下稱為負離子，負離子刺激人體可降低運動後血壓、血清素（serotonin）及多巴胺（dopamine）。光波能量負電位養生儀（大自然，育凱電機工業，台灣），可用交流電對人體形成負5000伏特的靜電場，使人體形成帶負電的狀態。目的：瞭解負離子刺激對運動後恢復期生理反應的影響。方法：受試者為健康成人14人，平均年齡20 + 2.7 歲，身高175.1 + 6.2公分，體重67.1 + 11.3 公斤。本研究採重複量數設計，兩次測驗間隔七天。受試者於原地跑步機進行85﹪VO2max測驗10分鐘後，在恢復期以雙盲平衡次序接受負離子刺激與假負離子刺激（沒有通電）。運動前休息時及恢復期測量攝氧量、運動後超額攝氧量（EPOC）、換氣量、心跳率、心率變異性（HRV）及血壓。資料以SPSS for Windows 10.0 套裝軟體進行重複量數二因子變異數分析，顯著水準定為α=.05 。結果：負離子刺激對激烈運動後恢復期攝氧量、EPOC、換氣量、心跳率、HRV、血壓等沒有顯著影響（p＞.05）。結論：因負離子刺激不會對激烈運動後恢復期攝氧量、EPOC、換氣量、心跳率、HRV、血壓等有所影響，故負離子刺激法不適用於促進運動後的恢復。

Negative ion are formed when atoms gain electrons. Physiologically, negative ion can decrease blood pressure, serotonin and dopamine during recovery after exercise. The electric instrument (Nature, Yokychen, Taiwan) used in this study can generate a static field of minus 5000 volts with alternating current (AC), causing a negative electricity condition in the body. Purpose: To understand the effects of negative ion stimulation on physiological responses during recovery after intense exercise. Methods: Fourteen subjects participated in the experiment. All subjects were healthy adults (average age 20 + 2.7 year, height 175.1 + 6.2 cm, weight 67.1 + 11.3 kg). This study used a repeated measure double blind counter balanced order at seven-day intervals. After running at 85﹪VO2max on treadmill for ten minutes, the subjects received negative ion stimulation or false negative ion stimulation (without electricity) during recovery. Oxygen uptake, excess post-exercise oxygen consumption (EPOC), ventilation (VE), heart rate (HR), heart rate variability (HRV) and blood pressure (BP) were collected at rest before exercise as well as during recovery. The data were analyzed with repeated measures two-way analysis of variance by SPSS for Windows 10.0 packaged software. Significance was accepted at α=.05. Results: Negative ion stimulation shows no significant effects on oxygen uptake, EPOC, VE, HR, HRV, BP during recovery after intense exercise (p＞.05). Conclusion: Because negative ion stimulation does not influence oxygen uptake, EPOC, VE, HR, HRV, BP during recovery after intense exercise, negative ion stimulation is not an appropriate method for facilitating recovery after intense exercise.

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