衰弱症為常見的不正常老化的現象，加速骨骼肌肉的流失，導致高齡者跌倒失能的機率增加。然而，肌力的復健需要長期到醫療院所進行治療及評估，不僅降低高齡者生活品質，也造成家屬的生活及財力負擔。且隨著高齡人口持續增加，將面臨醫療人員不足的窘況。為了因應以上問題，智慧穿戴裝置應用在復健醫療產業於居家老人照護領域也開始崛起。而目前市面上還未有專門為高齡者設計之應用於居家肌力訓練，感測特定肌肉訊號的穿戴裝置。
因此本研究將設計應用於高齡者上下肢肌力訓練感測表面肌電訊號之穿戴裝置。透過相關文獻探討，了解上下肢人因工程學、穿戴裝置設計基本要素以及使用性評估量表，作為設計基礎。本研究之研究方法及實驗分為三個部分，修改Nielsen等人提出之十項使用性原則為本研究穿戴裝置設計準則，以專家訪談及高齡者行為研究結果作為設計參考，進行穿戴裝置設計，最後透過高齡者使用性研究，以SUS使用性評估問卷及半結構式訪談，了解對設計之穿戴裝置的使用性及意願性。接著將得到的使用性分數以Three-way ANOVA、Two-way ANOVA、Mann-Whitney U Test及One-way ANOVA逐步的進行統計分析，並整理半結構式訪談內容。
從結果發現，女性60-69歲的高齡者更能夠接受在居家復健過程中使用設計之穿戴裝置，認為能夠在居家進行復健同時能夠得到醫療回饋是很方便的型式。在下肢穿戴裝置設計上，因為貼合皮膚的程度影響穿戴時的舒適度，建議增加調整尺寸的幅度，並添加防滑動的材質。上肢穿戴裝置設計上，穿戴步驟影響整體使用的順暢度，建議將位於不同上肢位置的穿戴步驟，以圖示描述的更清楚，並增加感測器放置方向的防呆設計，降低穿戴錯誤的機率。最後根據研究結果在穿戴設計上給予未來發展建議，以目前設計之穿戴裝置來說，在肌力訓練時不會造成不適感，建議未來朝向單一穿戴裝置符合感測多部位肌電訊號為導向進行設計。期望未來能夠加速普及應用於高齡者居家上下肢肌力訓練接收訊號，提供醫療人員做診療參考使用。

As muscle and strength decline with age, the risks of falling down and becoming disabled increase for the elderly. However, rehabilitation for patients through long-term treatments and assessments in medical institutions takes a long time. It reduces the elderly people’s quality of life and causes a burden on their living and finances on their families. Therefore, the goal of this study is to design wearable sEMG devices for muscle rehabilitation. We aim to help the elderly train their lower and upper limbs at home and simultaneously collect physiological signals through training for remote medical diagnosis.
The methods of the study are divided into three parts. First, Nielsen and the others proposed that the ten usability principles be modified as the wearable sEMG devices design guidelines. Second, the design direction is established through focus group interviews and the wearing behavior experiment of elderly people. Third, we evaluated the designed wearable sEMG devices through a usability evaluation experiment and semi-structured interview to understand their usability and feasibility. Then, the usability scores are gradually analyzed by Three-way ANOVA, Two-way ANOVA, Mann-Whitney U test, and One-way ANOVA.
From the results, we found that women aged 60-69 are more acceptable to use the designed wearable sEMG devices rehabilitation at home. In the design of the lower limb wearable sEMG device, appropriate wearing size affects the wearing comfort of users. It is necessary to increase the size of the adjustment. In the design of the upper limb wearable devices, the wearing steps affect the ease of wearing by the user. We recommend that the wearing steps located in different upper limb positions be described more clearly with diagrams and add a fool-proof design for the placement direction of the sensor to reduce wearing errors. The wearable devices currently designed will not cause users uncomfortable during muscle strength training. We recommend that the wearable device should meet the requirements of sensing multi-segment myoelectric signals in the future. We hope that in the future, it will be able to accelerate the popularization of the application of the upper and lower limbs muscle strength training of the elderly at home to receive signals and provide medical diagnosis and treatment.

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