Ergonomic Consideration in Pillow Height Determinants and Evaluation.
Level 5 - mechanism / opinion, no new human data
Narrative review of biomechanical and ergonomic literature without systematic review protocol
PubMed 34683013 · doi:10.3390/healthcare9101333
What was done
The authors conducted a literature review of studies published since 1997 evaluating determinants and research methodologies for pillow height, focusing on the physiological and mechanical characteristics of the head-neck-shoulder complex during sleep.
What was found
No quantitative effect sizes or numerical ranges are reported in the abstract. The review identified four primary objective determinants for evaluating pillow height: cervical spine alignment, anthropometric body dimensions, contact pressure, and neck/shoulder muscle activity. Due to insufficient evidence in the literature, the authors found no established optimal ranges for pressure distribution, muscle activity, or cervical alignment, and no definitive pillow height recommendation for either supine or lateral sleeping positions.
Why it matters
This review categorizes the biomechanical factors relevant to head and neck support, pointing out that current research lacks the standardized data needed to define an ideal pillow height.
Limits
The abstract does not state the number of studies reviewed or use systematic review methodology. The underlying literature failed to provide adequate evidence to determine optimal numerical ranges or design standards for sleep posture ergonomics.
Cited by
- context A pillow that tilts the head out of alignment creates muscular strain that signals the brain and prevents deep sleep.