年龄相关的最大自主闭唇力和闭唇力控制能力的差异。
Age-related differences in maximum voluntary lip-closing force and ability to control lip-closing force.
机构信息
Department of Orthodontics, Matsumoto Dental University, Shiojiri, Nagano, Japan.
Division of Oral and Maxillofacial Biology, Institute for Oral Science, Matsumoto Dental University, Shiojiri, Nagano, Japan; Department of Oral and Maxillofacial Biology, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano, Japan.
出版信息
J Oral Biosci. 2021 Jun;63(2):210-216. doi: 10.1016/j.job.2021.02.002. Epub 2021 Feb 27.
OBJECTIVES
Deterioration of lip function in the elderly is a form of oral hypofunction. It is important to understand age-related changes in lip function to improve oral health. This study aimed to quantitatively compare the maximum lip-closing force (LCF) and the ability to control LCF during voluntary lip-pursing movements between elderly and young adults and clarify the influence of aging on both measurements.
METHODS
Using a multidirectional LCF measurement system, we measured six-directional maximum LCFs (upper, upper right, lower right, lower, lower left, upper right) of 20 healthy elderly men (69.6 ± 4.2 years) and 20 healthy young men (25.1 ± 3.8 years). The ability to control the LCF in each direction was assessed based on the accuracy rate. The directional LCF and the ability to control LCF were compared between the elderly and young adults.
RESULTS
The maximum directional LCF in the elderly adults was significantly smaller than that in the young adults in three directions from the lower lip; moreover, the accuracy rate of the elderly adults was significantly lower than that of young adults in five of the six directions.
CONCLUSIONS
Our findings suggest that the influence of aging on the accuracy of LCF may be different from that on muscle strength. Hypofunction of the lips due to aging may result not only from decreased muscle strength but also from reduced LCF accuracy.
目的
老年人唇部功能的下降是口腔功能低下的一种表现。了解与年龄相关的唇部功能变化对于改善口腔健康非常重要。本研究旨在定量比较老年和年轻成年人在自愿撅唇运动中最大唇部闭合力（LCF）和控制 LCF 的能力，并阐明衰老对这两种测量的影响。
方法
使用多向 LCF 测量系统，我们测量了 20 名健康的老年男性（69.6±4.2 岁）和 20 名健康的年轻男性（25.1±3.8 岁）的六个方向的最大 LCF（上、右上、右下、下、左下、右上）。根据准确率评估了在每个方向控制 LCF 的能力。比较了老年人和年轻人在各个方向的定向 LCF 和控制 LCF 能力。
结果
老年人的最大定向 LCF 在三个下唇方向明显小于年轻人，而且老年人的准确率在六个方向中的五个方向明显低于年轻人。
结论
我们的研究结果表明，衰老对 LCF 准确性的影响可能与肌肉力量的影响不同。由于衰老导致的唇部功能低下可能不仅是由于肌肉力量下降，还可能是由于 LCF 准确性降低所致。
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