Table 7.

Strengths and weaknesses of the study’s motion capture systems.

System	Strengths	Weaknesses
Vicon MX	Large application segment Unlimited volume data Direct measurement of spatiotemporal variables Multiple performance capture Suitable for extensive motion capture research Long history of use in research	Expensive Time-consuming and complex to operate Small capture area Needs checkerboard calibration procedures Needs controlled environment Low external validity Needs markers on the body Needs line of sight “capture environment Limited movement freedom Unobtrusiveness for users Noise sources and environmental interference
Smartphone Accelerometers	Inexpensive Fast and simple to operate Big capture area Extremely portable and compact Automatic processing No need for a controlled environment High external validity No need for calibration procedures No need for markers on the body No need for line of sight “capture environment” Unlimited movement freedom Unobtrusiveness for particants No noise sources and environmental interference	Small application segment Limited volume data Indirect measurement of spatiotemporal variables Single performance capture Not suitable for extensive motion capture research Brief history of use in research