Soleus H-Reflex in Different Sitting Postures
The Influence of Different Sitting Postures on Soleus H-Reflex in Normal Subjects
1 other identifier
observational
30
1 country
1
Brief Summary
The purpose of this study was to examine the effect of prolonged sitting duration and three different sitting postures (erect, slumped, and slouched sitting postures) on spinal nerve root function by measuring the soleus (SOL) H-reflex amplitude. In addition, the pressure under the ischial tuberosities during the three sitting postures were assessed and correlated with the SOL H-reflex amplitude.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Jan 2012
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 1, 2012
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2012
CompletedStudy Completion
Last participant's last visit for all outcomes
May 1, 2012
CompletedFirst Submitted
Initial submission to the registry
September 26, 2012
CompletedFirst Posted
Study publicly available on registry
December 7, 2012
CompletedDecember 7, 2012
December 1, 2012
4 months
September 26, 2012
December 5, 2012
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Lumbosacral nerve root function by as measured by the soleus H-reflex amplitude
The outcome was measured during one session that lasted for an average of 3 hours. No further measurement was performed after that session.
Secondary Outcomes (1)
Pressure under the ischial tuberosities
The outcome was measured during one session that lasted for an average of 3 hours. No further measurement was performed after that session.
Study Arms (2)
Prolonged sitting
Includes individuals who spent an average of at least 6 hours a day sitting over the past year.
Control
Includes individuals who spent 4 hours or less/day sitting over the past year.
Interventions
The outcomes were measured while the participants assumed erect, slumped and slouched sitting postures.
Eligibility Criteria
Healthy adults from both genders.
You may qualify if:
- Able to read, speak, and understand English
You may not qualify if:
- Current complaint of low back pain.
- Current injury to the ankle and/or foot.
- Limited ankle movement.
- Leg length discrepancy.
- Scoliosis.
- History of:
- Back surgery.
- Calf muscle injury/surgery.
- Radicular symptoms.
- Peripheral neuropathy.
- Upper motor neuron lesion.
- Systemic and metabolic diseases.
- Cancer.
- Pregnant at the time of the study.
- Use of pain medications at the time of the study.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Texas Woman's University
Houston, Texas, 77030, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Hamad S Al Amer, MS
Texas Woman's University
Study Design
- Study Type
- observational
- Observational Model
- CASE CONTROL
- Time Perspective
- CROSS SECTIONAL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Mr
Study Record Dates
First Submitted
September 26, 2012
First Posted
December 7, 2012
Study Start
January 1, 2012
Primary Completion
May 1, 2012
Study Completion
May 1, 2012
Last Updated
December 7, 2012
Record last verified: 2012-12