Study Design Retrospective cohort study. Objective To compare sagittal cervical range of motion (ROM) and alignment in young versus middle-aged adults. Methods One hundred four asymptomatic adults were selected randomly out of 791 subjects who underwent lateral cervical radiographs in neutral, flexion, and extension positions. They were divided into two groups: young (age 20 to 29, 52 people) a...

We define measures on central extension of current groups in any dimension by using infinite dimensional Brownian motion.

The purpose of this study was to determine the importance of eleven professional competencies related to needs assessment and program development; a secondary purpose was to identify the best time these competencies should be learned. The study followed a survey research design, in which 441 randomly selected extension educators in the North Central Region of the United States responded to a qu...