近年來隨著經濟結構的轉型及消費模式的改變，許多消費者對低溫食品需求量與日俱增，使得人們在低溫環境下工作的機會愈來愈多，因此，了解冷環境對人員及工作績效的影響，日益顯得重要。因此，本研究以二個實驗探討持續冷浸潤對手部握力、靈巧性，以及人員對溫度知覺感受程度的變化及影響。
第一個實驗針對持續冷浸潤對手部握力、肌電訊號，以及主觀溫度知覺感受程度的影響進行探討。第二個實驗則探討持續冷浸潤對手部處理小物件（插銷作業）及大物件（螺絲鬆脫）的能力，以及肌電訊號與皮膚溫度的變化。
第一個實驗結果得知，性別及冷浸潤時間的長短對MVC、肌電訊號，以及主觀溫度知覺感受有顯著影響。最後本實驗，運用結構方程模型探討冷浸潤時間對手部溫度及握力的影響，同時並探討性別、手部計測相關資料，對手部溫度及握力的影響。研究發現隨著冷浸潤時間的遞增，手部溫度持續下降，進而影響手部握力；就性別而言，男性有較大的握力施力，女性的手部溫度則下降的較男性多；而手掌長對握力則有顯著的影響。此外，由於心理的適應作用，當浸潤時間達4分鐘之前，受試者對冷暴露所引發之不舒服感受程度逐漸增加，且在第4分鐘時達到最大，之後則逐漸減緩。在復原浸潤階段，隨浸潤時間增長，前臂膚溫逐漸升高，而使肌電訊號漸次恢復，並降低冷環境所產生的不舒適感受；整體而言，復原浸潤對績效回復有顯著影響。
第二個實驗結果顯示，隨著冷浸潤時間的遞增，手部皮膚溫度逐漸降低，進而影響手部處理小物件（插銷作業）及大物件（螺絲鬆脫）的能力；此外，在冷暴露後，手部對處理大物件（螺絲鬆脫）的能力上，就伸指肌的肌電訊號而言，則無顯著降低。在復原浸潤階段，隨浸潤時間增長，前臂膚溫逐漸升高，經過15分鐘復原浸潤後，各量測變項均回復冷浸潤前之水準；整體而言，復原浸潤對績效回復有顯著影響。最後，透過因素分析及逐步迴歸分析方法，發現手部計測資料、皮膚溫度、環境溫度及肌電訊號4變項對靈巧性作業績效的預測力約為70%。
如同過去其他學者的結果一樣，暴露在冷環境中，確實會對人員績效產生影響；此外，由於心理的冷適應作用，受試者在一開始暴露逾於冷環境中，所引發之不舒服感受程度逐漸增加，但隨浸潤時間增加，則逐漸減緩。因此，當受試者長期暴露於冷環境中，此種冷適應現象的產生，易使人員喪失警覺，進而產生冷傷害。

Two experiments were conducted in this study. One is to evaluate the effect of continuous cold immersion on grip force, and the corresponding muscular activity and Cold-Water-Induced Perception. Another is to evaluate the trends of skin temperature, dexterity, and associated EMG relative to conducting manual manipulation (fine or gross dexterity) during a continuous cold immersion.
For the first experiment, the ANOVA result indicated that gender and immersion time both had a significant effect on all responses during cold immersion. The SEM proved that cold immersion had a direct impact on the hand skin temperature, and subsequently affected the MVC. Gender had a significant impact on hand skin temperature and MVC, and MVC was also affected by palm length. Due to the psychological adaptation of subjective discomfort, participants experienced greater cold induced discomfort at the beginning of the cold immersion and the discomfort gradually diminished after 4 minutes. This cold adaptation and decreased muscular performance could potentially put a person at a greater risk of cold-related injuries under cold climate conditions. During the warm water immersion, all muscular performance had a gradual recovery.
For the second experiment, dexterity, EMG, and skin temperature fell with prolonged cooling, but the EMG of flexor digitorum superficialis (FDS) remained almost unchanged during the nut-loosening task. All responses recovered to the baseline level at the end of rewarming, but the skin temperature on the forearm did not. The four factors extracted by factor analysis are termed anthropometry, skin temperature, ambient condition, and EMG. They explain about 70% of the variation of the linear models for both nut-loosening and pin-insertion dexterity. For both dexterities, the most and the least influential contributor is the factor of skin temperature and anthropometry, respectively.

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