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論文中文名稱:以肘關節支撐改善坐姿使用觸控行動裝置時之頭部前傾姿勢 [以論文名稱查詢館藏系統]
論文英文名稱:Employing Elbow Joint Support for Improving Forward Head Posture While Sedentarily Operating Handheld Device [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:設計學院
系所名稱:工業設計系創新設計碩士班
畢業學年度:107
畢業學期:第一學期
出版年度:107
中文姓名:陳彥廷
英文姓名:Yen Ting Chen
研究生學號:104588027
學位類別:碩士
語文別:中文
口試日期:2018/09/14
論文頁數:71
指導教授中文名:陳文印
指導教授英文名:Wen Ying Chen
口試委員中文名:黃子坤;林玨赫
中文關鍵詞:頭部前傾姿勢肘關節支撐座椅扶手高度坐姿
英文關鍵詞:forward head postureelbow joint supportchair armrest heightsitting position
論文中文摘要:頭部前傾姿勢容易產生頸部疼痛以及肩胛間疼痛,嚴重者會有頭痛問題伴隨。低頭操作觸控行動裝置已是現代社會常見的錯誤姿勢,10分鐘低頭使用就會產生頸部肌肉疲勞,30分鐘時會感受到痠疼。
本研究針對長途列車使用者,探討坐姿操作觸控行動裝置會導致頭部前傾的因素;包括握持型態、手臂支撐、椅背傾斜角度。本研究同時發現高鐵使用者坐姿操作觸控行動裝置時都會找尋座椅扶手作為肘部支撐,因為懸臂操作裝置時,肌肉必須維持一固定姿勢導致血液無法流入靜態收縮肌肉中,進而造成手臂肌肉疲勞及姿勢性顫抖;在此情況下,使用者會偏向具有肘部支撐之雙手握持型態,藉此增加機身穩定性與肌肉舒適度,但由於現有的扶手高度偏低,導致使用者無法維持自然正中坐姿並產生頭部前傾姿勢。本研究假設:適當的「肘關節支撐」與足夠的「椅背傾斜角度」可以改善觸控行動裝置使用者之坐姿,避免頭部前傾姿勢所造成的問題。
首先設定國人身高第10與90百分位數模型在不同椅背傾斜角度坐姿操作觸控行動裝置所需的肘關節支撐尺度,據此測量使用者維持頸部彎曲角度能否維持在自然範圍內,記錄其值與操作狀況。身高偏高(173cm)與偏矮(151cm)受測者分別進行20◦、30◦座椅傾斜角度坐姿之觸控行動裝置瀏覽的操作任務,記錄其CVA值、肘關節支撐狀態(高度、位置、左右手)、觸控行動裝置的握持型態(單手握持單手操作、單手握持另一首操作、雙手握持單手操作、雙手握持雙手操作)、正中坐姿。比較高鐵座椅現有扶手及改善後扶手之使用績效,並在實驗結束後進行主觀問卷訪談。
研究結論:
1. 適當的「肘關節支撐」與足夠的「椅背傾斜角度」可以改善觸控行動裝置使用者之坐姿,尤其是大幅減少頭部前傾姿勢的時間佔比。
2. 在雙手握持行動裝置的情況下,足夠的肘關節支撐高度與適當的椅背傾斜角度可維持舒適的使用姿態及裝置的機身穩定。
論文英文摘要:Forward head posture can easily cause neck pain and interscapular pain. Furthermore, when the condition gets severe, people will usually experience headache. Nowadays, with the modern technology development, people tend to spend more time on their handheld devices with the incorrect posture, such as looking down at your phone. Remaining the same posture for ten minutes will cause the fatigue, and will even lead to further pain in only thirty minutes.
This research focused on the factors that result in forward head posture for long distance train commuters from the seat operating handheld devices. These includes holding style, arm support, backrest recline angle. Moreover, research indicated that High-Speed Rail commuters tend to rest their elbows on the armrest while using the handheld devices. Since muscles must remain certain posture while using the handheld devices, which make the blood hard to flood in static contraction muscles and result in muscle fatigue and posture tremor. Under this circumstance, User tend to use devices with both hands and placing elbows on armrest which increase the devices holding stability and the comfort of muscles. However, the height of the current armrests is slightly lower for users, which result in users not being able to sit ergonomically and result in head leaning forward. Correspondingly, we assume proper backrest recline angle and elbow joint support can improve the handheld devices users sitting position and avoid the negative effects result by head leaning forward.
First of all, we set the models as Taiwanese 10th and 90th percentile average heights, then observed the angles the user’s elbow needs for operating handheld devices base on various backrests recline angles. Then recorded the Craniovertebral angle (CVA) and operating situations to calculate the neck bending angles and make sure these bending angles is whether in neutral range or not. The participants with height of 173cm and 151cm were observed during the use of the handheld devices while seated on the chair with 20◦ and 30◦ tilting angles respectively. In order to record the data of CVA values, elbow joint support circumstances (height, position, and left or right arm), holding handheld devices style (holding and using a device with the same hand (same hand), holding a device with one hand and using it with another hand (different hand), holding a device with both hands but using it with only one hand (both hand holding single hand operating), holding and using a device with both hands (both hand) and neutral sitting postures Reflectively, We compared the using achievements between current High-Speed Rail seats and chairs with improving armrests. At last, we did the subjective interviews after accept tests.
Conclude that,
1. Proper “elbow joint support” and “backrest recline angle” for passengers who use handheld devices, may reduce the frequency of forward head posture. In addition, the changing rate of right and left hands for holding the handheld device which ease the forearm muscle fatigue, was decreased.
2. Users are likely to hold the device using both hands for keeping the device stable while reading or tapping the screen. In this case, sufficient height of both armrest should be essential.
論文目次:摘 要 i
ABSTRACT iii
誌 謝 v
目 錄 vi
表目錄 ix
圖目錄 x
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 1
1.3 研究限制 2
1.4 研究流程與架構 3
第二章 文獻探討 4
2.1 頭部前傾姿勢(Forward head posture) 4
2.1.1 頭部前傾姿勢定義 4
2.1.2 頭部前傾姿勢症狀 7
2.2 觸控行動裝置握持型態與頭部前傾姿勢 8
2.2.1 觸控行動裝置握持型態 9
2.2.2 握持型態 10
2.3 坐姿操作觸控行動裝置 11
2.3.1 螢幕位置與頭部前傾 11
2.3.2 手肘支撐 12
2.3.3 椅背傾斜操作觸控行動裝置 14
2.3.4 高鐵乘客操作觸控行動裝置調查 14
2.4 現有長途列車座椅 18
2.5 小結 19
第三章 坐姿肘關節支撐測試及量測 21
3.1 人體尺寸 21
3.2 全尺寸模型操作觸控行動裝置測試 21
3.2.1 身高第90百分位數模型測試 22
3.2.2 身高第10百分位數模型測試 23
3.2.3 全尺寸模型測試小結 24
3.3 坐姿肘關節量測 24
3.3.1 頭頸部自然角度 24
3.3.2 椅背傾斜角度定義 25
3.3.3 二維尺度模型坐姿手肘關節支撐量測 25
3.4 理想坐姿肘關節支撐尺度 27
第四章 研究方法與架構 29
4.1 研究架構 29
4.2 受測者 29
4.2.1 受測者臨床調查 30
4.3 實驗目的 31
4.4 研究方法 31
4.5 實驗步驟 31
4.6 實驗設備與環境配置 32
第五章 實驗與分析 35
5.1 座椅扶手改善實驗分析 35
5.1.1 偏高受測者(身高第90百分位數)樣本實驗分析 35
5.1.2 偏高受測者(身高第90百分位數)樣本實驗小結 39
5.1.3 偏矮受測者(身高第10百分位數)樣本實驗分析 46
5.1.4 偏矮受測者(身高第10百分位數)樣本實驗小結 50
5.2 主觀問卷訪談 56
5.3 實驗小結 56
第六章 結論與建議 57
6.1 研究結論 57
6.1.1 足夠的肘關節支撐高度可以減少使用者頭部前傾的時間佔比 57
6.1.2 在不足夠的肘關節支撐高度下增加椅背傾斜角度能降低頭部前傾的時間佔比 58
6.1.3 在雙手握持行動裝置的情況下,足夠的肘關節支撐高度可維持舒適的使用姿態及裝置的機身穩定 59
6.2 高鐵座椅扶手尺度建議 60
6.3 後續研究與建議 61
參考文獻 62
附錄 65
附錄A高鐵操作觸控行動裝置記錄表 65
附錄B受測者基本臨床調查表 66
附錄C受測者角度測量表 67
附錄D受測者實驗記錄表 69
附錄E主觀滿意度調查 70
附錄F受測者臨床調查資料 71
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