Department of Integrated Systems Engineering, The Ohio State University, Columbus, OH, USA.
School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA.
Work. 2021;69(1):127-139. doi: 10.3233/WOR-213463.
BACKGROUND: Neck discomfort and pronounced neck flexion have been associated with smartphone use. OBJECTIVE: Eye glasses with a 90 deg prism in each lens were investigated as a potential intervention to reduce awkward head and neck postures during activities involving viewing the device. METHODS: Sixteen smartphone users with neck pain and 9 asymptomatic users performed a texting task on a smartphone with and without the prism glasses, in sitting and standing postures in a laboratory setting. RESULTS: Cervical erector spinae and upper trapezius muscle activity, head posture and motion, performance, discomfort and other subjective perceptions were assessed. Prism glasses reduced neck extensor muscle activity, neck flexion, and head tilt compared to the direct view. In the symptomatic group, the intervention produced less neck and shoulder discomfort compared to the direct view. CONCLUSIONS: This intervention could offer an alternative way of interacting with a smartphone while texting in stationary postures, by reducing exposure to pronounced flexed neck and head posture commonly seen in users, and thereby could reduce neck discomfort associated with smartphone use.
背景：颈部不适和明显的颈部前屈与使用智能手机有关。 目的：研究在每个镜片中带有 90 度棱镜的眼镜作为一种潜在的干预措施，以减少在观看设备时进行活动时出现的不自然的头部和颈部姿势。 方法：16 名有颈部疼痛的智能手机使用者和 9 名无症状的使用者在实验室环境中，以坐姿和站姿，使用和不使用棱镜眼镜进行智能手机短信任务。 结果：评估了颈伸肌和上斜方肌的活动、头部姿势和运动、表现、不适和其他主观感受。与直视相比，棱镜眼镜减少了颈部伸肌的活动、颈部前屈和头部倾斜。在有症状的组中，与直视相比，该干预措施减少了颈部和肩部的不适。 结论：这种干预措施可以提供一种替代的方式来与智能手机互动，同时减少常见于使用者的明显的颈部前屈和头部姿势，从而减少与智能手机使用相关的颈部不适。
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