The Effect of Different Support Surfaces on Balance in Healthy Individuals

The Effect of Different Support Surface on Postural Sway and Limits of Stability in Healthy Individuals

This study will evaluate how age, visual sensation and different ground properties affect of postural sways and stability limits at different support surface widths. 60 individuals will be included in this study.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Diagnostic test: balance analysis

Detailed Description

Balance is considered to be an important component of performance during activity as a result of a complex process in which musculoskeletal and neurological systems function. Two different balance states are defined as the static balance where the individuals maintain their inactive position or the dynamic balance when they perform a foreseen movement. The balance is maintained by keeping the center of gravity within the boundaries of the support surface and is provided by sensory impulses from the visual, vestibular and somatosensory systems organized by the central nervous system. Balance is an important factor to lead an independent life, and it is imperative that the balance be ensured in order to ensure that daily living activities are performed safely. The neural control of the bipedal posture varies depending on the width of the supporting surface, which has a significant impact on the frontal plane biomechanics. There is a linear relationship between increased support surface size and mechanical stability. In experimental studies, it has been shown that increasing muscle width levels in response to translational perturbations seen on the support surface on the horizontal plane have decreased with increasing step width. The changes in the preferred support surface vary depending on the age of the external environment, recurrent falls due to decreased sensory input, or various neurological disorders. However, there are few quantitative studies examining the relationship between different support surface widths and equilibrium, and the effect of posture width on sensory feedback control is still poorly understood. This study was planned to evaluate the effect of age, visual sensation and different soil properties on postural release and stability limits at different support surface widths.

• Study Type: Interventional
• Enrollment (Actual): 60
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Altindag
    • Ankara, Altindag, Turkey, 06230
      • Hacettepe University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 50 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Healthy individuals aged between 18-50
• Without any diagnosed disease
• Individuals who voluntarily agree to participate in this research

Exclusion Criteria:

• The presence of previous lower extremity surgery
• Pain during evaluation
• Foot ankle instability
• Important and irreversible visual deficits
• Body mass index (BMI) greater than> 40 kg / m²
• Limitation of ankle, knee and hip joint in lower extremity
• Muscle strength of the lower extremity (dorsiflexors, plantar flexors, quadriceps, hamstring, gluteus maximus, gluteus medius) and the trunk (rectus abdominous, internal and external oblique abdominals, back extensor) below 5.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Screening
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Healthy Group; Postural sway and stability limits in assessment of healthy individuals	Diagnostic test: balance analysis; Computerized balance analysis system will use to evaluate postural sway and limits of stability at four different support surfaces.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Postural Sway	Postural sways were used to evaluate dynamic balance. Postural sway, in terms of human sense of balance, refers to horizontal movement around the center of gravity. Postural sway was assessed during quite standing with open/closed eyes on a hard/soft floor with the Bertec Balance System on 4 different support surfaces: adjacent feet, width of the bitrochanteric diameter, increased by 50% width of the bitrochanteric diameter and reduced by 50% of the width of the bitrochanteric diameter randomly.	1 week

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The Limits of Stability	The limits of stability were used to evaluate static balance. Limits of stability is the greatest distance in any direction a person can lean away from a midline vertical position without falling, stepping, or reaching for support. Participants were assessed with a force platform (Model BP 5050; Bertec Corporation, Columbus, Ohio) in terms of support surfaces on limits of stability (LoS) in the right, left, front and back directions when the eyes were open on the hard floor with the Bertec Balance System on 4 different support surfaces: adjacent feet, width of the bitrochanteric diameter, increased by 50% width of the bitrochanteric diameter and reduced by 50% of the width of the bitrochanteric diameter randomly.	1 week

Collaborators and Investigators

• Sponsor: Recep Tayyip Erdogan University Training and Research Hospital
• Collaborators: Hacettepe University
• Investigators: Principal Investigator: Melek M. ERDEM, Tayyip Erdogan University Training and Research Hospital; Study Chair: Ozden OZKAL, PT, PhD, Hacettepe University; Study Chair: Ali I. Yalcin, PT, M.Sc., Hacettepe University; Study Director: Semra TOPUZ, Assoc. Prof., Hacettepe University

Publications and helpful links

General Publications

• Goodworth AD, Mellodge P, Peterka RJ. Stance width changes how sensory feedback is used for multisegmental balance control. J Neurophysiol. 2014 Aug 1;112(3):525-42. doi: 10.1152/jn.00490.2013. Epub 2014 Apr 23.

Study record dates

Study Major Dates

• Study Start (Actual): January 17, 2022
• Primary Completion (Actual): June 15, 2023
• Study Completion (Actual): October 16, 2023

Study Registration Dates

• First Submitted: May 6, 2019
• First Submitted That Met QC Criteria: November 19, 2019
• First Posted (Actual): November 22, 2019

Study Record Updates

• Last Update Posted (Actual): December 5, 2023
• Last Update Submitted That Met QC Criteria: December 4, 2023
• Last Verified: December 1, 2023

More Information

Terms related to this study

• Keywords: Balance; Limits of stability; Postural sway; Stance width
• Other Study ID Numbers: GO 19/86

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: De-identified individual participant data for all primary and secondary outcome measures will be made available.
• IPD Sharing Time Frame: Data will be available within 6 months with completion of the result report.
• IPD Sharing Access Criteria: Requestors will be required to sign a Data Access Agreement.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; CSR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No