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Height changes due to autotraction
1Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, VT 05405, USA.
Clinical Biomechanics (Bristol, Avon)
|August 7, 2013
Summary
Autotraction and lying down increase height, but lying down alone provides a greater increase. This height gain is temporary, lasting only about two hours.
Area of Science:
- Biomedical Engineering
- Orthopedics
- Human Physiology
Background:
- Spinal height exhibits diurnal variations.
- Understanding factors influencing spinal length is crucial for biomechanical and orthopedic research.
Purpose of the Study:
- To investigate the effect of autotraction on spinal height.
- To compare the height changes induced by autotraction versus recumbency alone.
Main Methods:
- Human volunteers underwent autotraction (15 pulls, 500-600 N).
- Height measurements were taken before and at 15, 30, 60, and 120 minutes after intervention.
- A control trial involved the same protocol without applying pulling forces (recumbency only).
Main Results:
- Both autotraction and recumbency resulted in a measurable increase in height.
- Recumbency alone produced a greater height increase compared to autotraction.
- The observed height increase was transient, with subjects returning to baseline height within 2 hours.
Conclusions:
- While autotraction can temporarily increase spinal length, recumbency is more effective.
- The effects of both interventions on spinal height are short-lived.
- Further research may explore mechanisms behind these transient height changes.
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