臨床研究等提出・公開システム

Date of registration	May. 14, 2026
Last modified on	May. 14, 2026
Trial ID	jRCT1030260132

Scientific Title	Effects of Plantar Contact Conditions on Head and Neck Angle, Seat Pressure, and Plantar Pressure During Wheelchair Sitting in Healthy Individuals
Public Title	Effects of Foot Position on Head and Neck Posture, Seat Pressure, and Foot Pressure During Wheelchair Sitting

Contact for Scientific Queries	Name	Yokoyama Etsuko
	Affiliation	Faculty of Health Science and Nursing, Juntendo University
	Address	3-7-33 Omiya-cho, Mishima City, Shizuoka
	Telephone	+81-559913151
	E-mail	e-yokoyama@juntendo.ac.jp
Contact for Public Queries	Name	Yokoyama Etsuko
	Affiliation	Faculty of Health Science and Nursing, Juntendo University
	Address	3-7-33 Omiya-cho, Mishima City, Shizuoka
	Telephone	+81-559913151
	E-mail	e-yokoyama@juntendo.ac.jp

Recruitment status	Complete

Anticipated date of first enrollment		May. 14, 2026
Target sample size		60
Study Type		Interventional
Study Design	allocation	non-randomized controlled trial
	masking	open(masking not used)
	control	uncontrolled control
	assignment	crossover assignment
	purpose	other
Key inclusion & exclusion criteria	Inclusion Criteria	Individuals who are: - 18 years of age or older but under 30 years of age, or 65 years of age or older but under 85 years of age, at the time consent is obtained; - With a lower leg length of less than 45 cm (approximately 175 cm or shorter in height); - Able to remain seated during the measurement period; - Who, after receiving a thorough explanation regarding participation in this study, have fully understood it and have provided written informed consent of their own free will.
	Exclusion Criteria	The following individuals are eligible for participation in the study: - Individuals who have difficulty maintaining a seated position on their own - Individuals with a lower leg length of 45 cm or more (due to difficulties in adjusting the seat height of the wheelchair) - Any other individuals deemed unsuitable as study participants by the principal investigator Among the study participants described in (1) above, those who meet all of the selection criteria in (2) and do not meet any of the exclusion criteria in (3) are considered eligible.
	Age Minimum	18age old over
	Age Maximum	85age old not
	Gender	Both
Health Condition(s) or Problem(s) Studied		none
Intervention(s)		Seat angle, knee angle and plantar contact conditions: Seat angle: approximately 2 degrees; knee angle: 90 degrees; plantar: flat on the floor. Seat angle: 0 degrees; knee angle: 90 degrees; plantar flat on the floor. Seat angle: approximately 2 degrees; knee angle: approximately 113 degrees (based on a standard wheelchair); Plantar resting on the foot supports.
Primary Outcome(s)		Head and neck angles based on Plantor contact conditions in a wheelchair
Secondary Outcome(s)		Seat pressure, plantar pressure and head-neck angles based on plantar contact conditions in wheelchairs.

Primary Sponsor	none

Name of Certified Review Board	Research Ethics Committee Faculty of Medicine, Juntendo University
Address	2-1-1 Hongo,Bunkyo-ku,Tokyo, Tokyo
Telephone	+81-3-5802-1584
E-Mail	crbjun@juntendo.ac.jp
Approval Status	Approval
Date of approval	June. 24, 2025

Plan to share IPD	No

Countries of Recruitment（Except Japan）	none