Fujii S, Watanabe H, Taga G<\/p>\n\n\n\n
Infant Behavior and Development<\/em>, 58: 101418 , 2020<\/p>\n\n\n\n Development of motion capture technology has enabled the measurement of body movements over long periods of time in daily life. Although accelerometers have been used as primary sensors, problems arise when they are used to measure the movements of infants. Because infants and caregivers interact frequently, accelerometer data from infants may be significantly distorted by a caregiver\u2019s movement. To overcome this problem, a strain sensor suit was developed for infants to measure flexion and extension movements of the limbs. A case study was performed to analyze the strain sensor data of an infant in relation to the accelerometer data of the infant\u2019s and a caregiver\u2019s body under various types of infant\u2013caregiver interaction. The results demonstrated that the strain sensor data had low correlation with the accelerometer data of the infant and caregiver while the accelerometer data between infant and caregiver had higher correlation. This suggests that the strain sensor is suitable to detect limbs\u2019 angular displacements mostly independent from the translational body movements exerted by a caregiver.<\/p>\n\n\n\nAbstract<\/h3>\n\n\n\n