現代人長時間坐著辦公沒有時間站起來運動以致下肢血液循環差進而導致許多心血管疾病，在研究過許多文獻探討被動運動對血液循環的效果後，本文研製出以馬達減速機當作阻尼之腿部運動機，並以輸入電流大小調整運動阻力達到在健身器材上需替換槓片以調整阻力效果之多功能腿部運動機，可供放在上面的腳進行可調整阻力大小的主動運動和對不須出力的被動運動。被動運動模式為將腳放上平台時，力感測器感測到負重後，會自動依設定的電壓與電流去移動該平台，讓放在上面的腿產生被動運動，達到活絡血液循環的效果。主動運動以馬達減速機為可變阻尼，當腳出力推動左右側的力感測器，控制器就會指揮馬達驅動器輸出可設定的電流以輔助腳出力運動，達到以數位方式調整運動阻力效果。此運動機包含使用者人機介面，讓使用者選擇固定阻力值或由腳部出力大小調整阻力大小。

Modern people sit for a long time and have no time to stand up and exercise, resulting in poor blood circulation in the lower limbs, which leads to many cardiovascular diseases. After studying many research on the effects of passive exercise on blood circulation, this paper developed a leg exercise machine with a motor reducer as variable damping that allows the user to adjust the movement resistance by changing the input current to reach the multi-functional leg exercise. This exercise machine can provide active foot movement and passive movement by different force that foot give to force sensor. Passive motion mode is to put the foot on the platform, after the force sensor senses the weight, it will automatically move the platform according to the set voltage and current, so that the legs placed on it will passively move to achieve the effect of active blood circulation. The active mode uses the motor reducer as a variable damping. When the foot force pushes the force sensors on the left or right sides, the controller will command the motor driver to output a settable current to assist the foot to move, and the effect of adjusting the motion resistance in a digital manner can be achieved. The exercise machine also includes a user's interface, allowing the user to select a fixed resistance value or to adjust the resistance by the size of the foot-force output.

[1] Czell, D., Schreier, R., Rupp, R., Eberhard, S., Colombo, G., & Dietz, V. (2004). Influence of passive leg movements on blood circulation on the tilt table in healthy adults. Journal of neuroengineering and rehabilitation, 1(1), 4.

[2] Schotten, T. (1986). U.S. Patent No. 4,587,960. Washington, DC: U.S. Patent and Trademark Office.

[3] Ballaz, L., Fusco, N., Crétual, A., Langella, B., & Brissot, R. (2007). Acute peripheral blood flow response induced by passive leg cycle exercise in people with spinal cord injury. Archives of physical medicine and rehabilitation, 88(4), 471-476.

[4] Hellsten, Y., Rufener, N., Nielsen, J. J., Høier, B., Krustrup, P., & Bangsbo, J. (2008). Passive leg movement enhances interstitial VEGF protein, endothelial cell proliferation, and eNOS mRNA content in human skeletal muscle. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 294(3), R975-R982.

[5] Mortensen, S. P., Askew, C. D., Walker, M., Nyberg, M., & Hellsten, Y. (2012). The hyperaemic response to passive leg movement is dependent on nitric oxide: a new tool to evaluate endothelial nitric oxide function. The Journal of physiology, 590(17), 4391-4400.

[6] Shoemaker, J. K., Tiidus, P. M., & Mader, R. (1997). Failure of manual massage to alter limb blood flow: measures by Doppler ultrasound. Medicine and Science in Sports and Exercise, 29(5), 610-614.

[7] Tiidus, P. M., & Shoemaker, J. K. (1995). Effleurage massage, muscle blood flow and long-term post-exercise strength recovery. International Journal of Sports Medicine, 16(07), 478-483.

[8] ÖRlander, J., Kiessling, K. H., Larsson, L., Karlsson, J., & Aniansson, A. (1978). Skeletal muscle metabolism and ultrastructure in relation to age in sedentary men. Acta Physiologica Scandinavica, 104(3), 249-261.

[9] Lee, H. H. (2017). Finite element simulations with ANSYS Workbench 15. SDC publications.
[10] Lee, H. H. (2018). Finite Element Simulations with ANSYS Workbench 17. SDC Publications.

[11] 朱敏德主編，機械元件設計 (一)，文京書局，2000

[12] 朱敏德主編，機械元件設計 (二)，文京書局，2000

[13] 林清安，Pro/ENGINEER Wildfire 2.0零件設計基礎篇[上]，知城，2005

[14] 林清安，Pro/ENGINEER Wildfire 2.0零件設計基礎篇[下]，知城，2005

[13] MISUMI公司，https://tw.misumi-ec.com/

[14] 祥儀企業股份有限公司，http://www.shayangye.com/

[15] 陳躍, 週飛雪, 楊麗愛, 王九姣, 應月華, & 謝光柏. (2005). 早期綜合康復治療對急性腦血栓偏癱患者下肢運動功能的影響 (Doctoral dissertation).
.
[16] 張立勳, 李長勝, & 劉富強. (2011). 多模式下肢康復訓練機器人的設計與實驗分析. 中國康復醫學雜誌.

[17]方濤濤, 韓建海, 王會良, & 尤愛民. (2013). 新型臥式下肢康復訓練機器人機械系統設計. 中國康復醫學雜誌.