HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Supplemental Videos The Bottom Line The Bottom Line Podcast All Versions of this Article: ptj.20060378v1 87/12/1651    most recent Submit a response Alert me when this article is cited Alert me when Rapid Responses are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Etnyre, B. Articles by Thomas, D. Q Search for Related Content PubMed PubMed Citation Articles by Etnyre, B. Articles by Thomas, D. Q

Event Standardization of Sit-to-Stand Movements

B Etnyre, PT, PhD, is Professor, Department of Kinesiology, MS-545, Rice University, 6100 Main, Houston, TX 77005 (USA), and Adjunct Professor, Physical Therapy Department, Texas Woman's University, Houston, Tex
DQ Thomas, PhD, FACSM, is Professor, Department of Kinesiology, Illinois State University, Normal, Ill

Address all correspondence to Dr Etnyre at: etnyre{at}rice.edu

Background and Purpose: Unlike gait analysis, no commonly accepted method for studying sit-to-stand (STS) movements exists. Most previous studies describing STS events used various methods to identify movement events while restricting sitting positions and movements. The present study observed natural rising from a sitting position using a simple method for measuring this common task. The purposes of this study were to compare commonly performed STS movements and to propose a standard system for defining identifiable sequential events.

Subjects and Methods: Ground reaction forces of 100 adults who were healthy (50 male, 50 female) were recorded using a force platform as each participant performed 4 methods of rising from sitting on a standard chair. The 4 STS conditions were: with arms free, with hands on knees, using armrests, and with arms crossed.

Results: For each subject, 11 recorded events from the vertical, fore-aft, and lateral dimensions were identified for all arm-use conditions. The only significant and clinically relevant force difference among arm-use conditions was that the armrests condition produced less average force than the other 3 conditions during the seat-off and vertical peak force events. Among average event times, the armrests condition showed significantly longer time to the vertical peak force event than the other conditions.

Discussion and Conclusion: Because these events occurred invariably in sequential order for every individual for all arm-use conditions in a relatively large sample of observations during natural STS movements, this method may be useful for establishing a standard method to assess and compare patient functionality and allow comparisons among STS research studies.

This article has been cited by other articles:

				D. E Krebs Invited Commentary Physical Therapy, December 1, 2007; 87(12): 1667 - 1667. [Full Text] [PDF]

				B. Etnyre and D. Q Thomas Author Response Physical Therapy, December 1, 2007; 87(12): 1667 - 1668. [Full Text] [PDF]