Assessment of feature of the quadriceps muscle in community-dwelling older people by using ultrasound

本研究旨在探讨通过超声获得的股四头肌厚度(MT)和回声强度(EI)来评估社区老年人运动功能恶化或骨质疏松症风险的新方法。对913例社区老年人的股四头肌超声图像进行了测量，并测量了MT和EI。通过横断面分析和纵向分析，研究了这些超声指标与骨骼肌质量(SMM)、膝关节伸展力量和步态速度等运动功能退化风险之间的关系。虽然在横断面分析中MT和EI与运动功能恶化的风险相关，但在纵向分析中两者之间没有相关性。然而，MT与SMM的未来下降相关。这可能是可能的利用这一点，以简单的筛选石棺减少。

The present study aimed to investigate novel measures by quadriceps muscle thickness (MT) and echo intensity (EI) obtained from ultrasound, which can assess the risk of motor functional deterioration or sarcopenia among community-dwelling older people. Ultrasound images of quadriceps muscles were recorded in 913 community-dwelling older people, and MT and EI were measured. Relationships between these ultrasound measures and the risk of motor functional deterioration by "Kihon Check-list" or sarcopenia, such as skeletal muscle mass (SMM), knee extension strength and gait speed, were examined by a cross-sectional and a longitudinal analysis.Although MT and EI were correlated with the risk of motor functional deterioration in the cross-sectional analysis, those were not correlated in the longitudinal analysis. However, MT was correlated with the future decrease of SMM. It may be possible to utilize this for the simple screening of sarcopenia.