Sit-to-stand ability with dual task among older adults with mild cognitive impairment

Abstract

Sit to stand (STS) is the basic mobility related to the quality of life. Older adults with mild cognitive impairment (MCI) have a movement pattern change in motor function. Moreover, the dual task can interfere with cognitive ability, leading to reduced motor performance. However, there was a lack of evidence of movement time, kinematics, and kinetics while performing STS tasks. This study aims to evaluate the STS ability in older adults with and without MCI while performing in single and dual conditions. This study was cross-sectional. Seventy older adults (35 older adults with MCI and 35 controls) participated in this study. All participants were asked to perform STS in both conditions (STS alone and STS with carrying the tray of glass that fill the water) with preferred movement patterns. The chair height was set for individuals as lower leg length. The variables consisted of movement time, kinematics variables (trunk, pelvis, hip, knee, and ankle joint), peak vertical ground reaction force, and kinetics variables (hip extension, knee extension, plantar flexion moment) were collected. The study found the highest values of trunk flexion angles were found in older adults with MCI during STS with carrying a tray of glass filled with water. Moreover, the STS with dual tasks took a greater movement time than single conditions in both groups. Also, both groups found a difference in the dominant and non-dominant leg. The dominant leg has a greater knee flexion angle and ankles plantar flexion angles than the non-dominant leg. For the kinetics variables, older adults without MCI have a greater hip extension moment and plantar flexion moment during STS alone than STS with carrying the tray of glass that fill the water.