COMISA patients exhibit a more vulnerable body composition profile characterized by lower skeletal muscle mass and higher visceral fat area compared to OSA-only patients
In a cross-sectional study of 2915 patients with moderate-to-severe OSA, 29.7% were classified as COMISA. COMISA patients had lower skeletal muscle mass (SMM) and higher visceral fat area (VFA), with the SMM/VFA ratio inversely associated with insomnia severity (β = -0.08, p = 0.001) and COMISA status (OR = 0.29, p = 0.004), particularly in males.
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COMISA patients exhibit a more vulnerable body composition profile characterized by lower skeletal muscle mass and higher visceral fat area compared to OSA-only patients The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
COMISA patients exhibit a more vulnerable body composition profile characterized by lower skeletal muscle mass and higher visceral fat area compared to OSA-only patients
This conclusion is most relevant to: 2915 patients with moderate-to-severe OSA (AHI ≥ 15) who underwent polysomnography and body composition analysis.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Body composition profiles and metabolic vulnerability in comorbid insomnia and sleep apnea (COMISA): A large-scale BIA analysis. (Sleep medicine, 2026) —
How It Works
The proposed biological pathway:
- ▸Insomnia and sleep apnea co-occur (COMISA)
- ▸COMISA associated with lower skeletal muscle mass and higher visceral fat
- ▸Reduced SMM/VFA ratio reflects metabolic vulnerability
- ▸Lower muscle-to-fat ratio linked to greater insomnia severity and COMISA risk
Who Might Benefit
Evidence fit by population:
- ▸2915 patients with moderate-to-severe OSA (AHI ≥ 15) who underwent polysomnography and body composition analysis
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Cross-sectional design prevents causal inference
- ▸Body composition assessed via bioelectrical impedance analysis, not gold-standard methods like DXA or MRI
- ▸Insomnia severity defined solely by ISI score, not clinical interview
Frequently Asked Questions
What is COMISA?▼
COMISA stands for comorbid insomnia and sleep apnea, a condition where patients have both insomnia and obstructive sleep apnea.
How was body composition measured in this study?▼
Body composition was assessed using bioelectrical impedance analysis (BIA), measuring skeletal muscle mass (SMM), visceral fat area (VFA), and the SMM/VFA ratio.
Did the COMISA group have worse sleep than the OSA-only group?▼
Yes, COMISA patients had shorter total sleep time, prolonged sleep onset latency, increased wake after sleep onset, and lower sleep efficiency, despite similar BMI and apnea-hypopnea index.
Is the association between body composition and COMISA stronger in any subgroup?▼
Yes, the inverse association between SMM/VFA ratio and COMISA status was particularly strong in males.
References
- 1.Kim JR, Park HR, Song P, Joo EY. “Body composition profiles and metabolic vulnerability in comorbid insomnia and sleep apnea (COMISA): A large-scale BIA analysis..” Sleep medicine, 2026. PMID: 42442329 DOI: 10.1016/j.sleep.2026.109134