摘要
隨著人們生活品質的提升，除了嬰兒揹帶的功能是否符合需求，人因問題也逐漸受到家長們的重視。本研究旨在使用心理物理法給予受試者指示語，讓受試者調整揹重直到最大可接受揹負重量，藉此來探討不同的揹負方式、揹帶款式與模擬揹負時間對於最大可接受揹負重量的影響，提供廠商一個參考的承重上限及使嬰兒揹帶產品更符合消費者需求。實驗共徵募20位受測者(男女各10位)，自變項包括性別(男、女性)、三款嬰兒揹帶(單肩揹巾A與雙肩揹帶B、C)、兩種揹負方式(前揹、後揹)及兩種模擬揹負時間(1小時、4小時)，依變項為最大可接受揹負重量(MAWC)、百分比心率(%HR)及身體疲勞程度評比(Borg’s CR-10 scale)三項。 實驗結果顯示：(1)性別、不同嬰兒揹帶及模擬揹負時間對MAWC有顯著的影響，男性平均15.9公斤顯著大於女性平均12.5公斤；1小時模擬揹負時間(平均15.2公斤)顯著大於4小時模擬揹負時間(平均13.1公斤)；款式B款MAWC值顯著大於C款再大於A款(2)模擬揹負時間對百分比心率有顯著的影響，模擬揹負1小時的%HR顯著大於模擬揹負4小時。(3)性別、不同嬰兒揹帶、模擬揹負時間及揹負方式對身體疲勞程度評比的頸、肩、背、腰與腹部皆有顯著影響。根據研究結果，嬰兒足月六個月齡，建議以雙肩後揹方式，揹負者較為輕鬆。此外，透過此研究能有效提供給嬰兒用品廠商作為重量上限的參考、亦能給予消費者一個參考最大揹重，以期得到符合期望之產品，並且減少因揹負過重而導致的人因傷害。
並列摘要
With the improving of quality of life, not only the functions of baby carriers meet the needs of people, but also the ergonomics issues are subject to the users’ concern. This study aimed to evaluate the effect of different of baby carrier design, carrying time and carrying type on MAWC (maximum acceptable weight of carrying), percentage of maximum heart rate (%HR) and perceived exertion using Borg’s CR-10 scale. A total of 20 subjects were recruited (10 males and 10 females). The independent variables included gender (male and female), different baby carrier design (A, B and C), simulated carrying time (1 hour and 4 hours) and carrying type (front and back). The dependent variables were MAWC, %HR, and perceived exertion using Borg’s CR-10 scale that were assessed during the experiment. The ANOVA results indicated that gender, baby carrier and simulated carrying time had significant influence on MAWC (p < 0.05). Male’s MAWC was significant higher than that of females’. Back carrying of B-type baby carrier had the greatest MAWC, and was significantly higher than the other combinations. As for %HR, 1-hour was significantly greater than 4-hours in carrying time. In addition, gender, different baby carrier design, carrying type and simulated carrying time had significant influence on perceived exertion using Borg’s CR-10 scale (p < 0.05). Based on the finding, it provides useful information for baby carrier design and carrying method selection.
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