Healthy young adults may perform sit-to-stand significantly faster than what is defined as normative

The normative description of sit-to-stand (STS) enables biomechanists to objectively analyze this motion and to compare healthy and pathological patterns of movement against a common definition. When the participants in our study performed STS, they demonstrated the phases of STS but their timing did not match the standard set by Kralj et al. Our participants are younger than the ones from Kralj’s description of STS and it is proposed that the normative definition is adjusted for the speed of younger people.