For Physical-Social Functioning ( PSF ) , trajectory groups included Low Maintainer ( @ % ) , Mid-Low Improver ( @ % ) , Medium Decliner ( @ % ) , Mid-High Maintainer ( @ % ) , and High Maintainer ( @ % ) ; for EF , trajectories included Low Maintainer ( @ % ) , Mid-Low Improver ( @ % ) , Medium Decliner ( @ % ) , Mid-High Maintainer ( @ % ) , and High Maintainer ( @ % ) .