本研究目的在探討進行12週中低強度（40～50%）有氧運動訓練對臺灣北區長者之功能性體適能與12經絡微電量之影響。受試者為60位70歲以上無認知障礙及關節角度限制之長者，進行每週2次、為期12週之有氧運動介入，訓練前後均測量體適能與左右共24個良導點之經絡微電量。研究結果顯示12週有氧運動訓練後相較於控制組，實驗組在各體適能包括肌力、肌耐力、心肺耐力、柔軟度與動靜態平衡能力方面均無顯著差異。12經絡微電量方面，實驗組長者之兩側心經、脾經、肝經、膀胱經、膽經及胃經、右側三焦經與左側小腸經皆達顯著統計差異。本研究結論為介入12週中低強度有氧運動後，可明顯改善與呼吸、消化道、心血管及排泄功能有關之經絡系統，以活化臟腑機能。建議未來長者之運動訓練計畫可延長訓練時程以強化肌力，並且加強柔軟度與動靜態平衡之內容，同時佐以經絡微電量之量化測定，以呈現結合中醫理論與運動醫學之生理數值，可協助偵測、記錄並比較科學化運動訓練之成效。

The purpose of this study was to investigate the effects of low- to moderate-intensity aerobic exercise training (40-50%) on functional fitness and microelectric conductivity of the 12 main meridians amongst older adults in north Taiwan. Sixty participants aged ≤ 70 years without any joint range-of-motion limitation or cognitive impairment were enrolled. After training the participants twice a week for 12 weeks, we collected data on their functional fitness and microelectric conductivity at 24 points in the main meridians. A comparison of the treatment group's results with those of a control group revealed that the former did not display notable improvement in muscle strength, muscular endurance, cardiopulmonary capacity, static and dynamic balance, or flexibility. Moreover, the microelectric conductivity values of the bilateral heart, spleen, liver, bladder, right triple energizer, and left small intestine meridians were significantly different from those of controls. We conclude that the aerobic exercise changed the microelectric conductivity of meridians associated with respiratory, cardiovascular, and urinary systems amongst older adults. Future studies could focus on increasing the duration of the exercise intervention to improve muscle strength, flexibility, static, and dynamic balance. The measurement of microelectric conductivity of the meridians to determine the effectiveness of the training program can be quantified by using a combination of physiological parameters described in the theory of traditional Chinese medicine and modern sports medicine.