Key result
Intentional diaphragmatic contraction increases meal-induced bloating sensation by ~10% versus relaxation.
Why the study?
The relation between postprandial abdominal distention and the subjective sensation of abdominal bloating was unknown.
Does intentional abdominal distention worsen the perception of visceral sensations after a meal overload in healthy women?
Population
16 healthy women
Comparison
Intentional abdominal distention (diaphragmatic contraction) vs diaphragmatic relaxation after meal overload
Design
Open-label study with 30-second alternating maneuvers
Follow-up
30 seconds
Authors
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Should not yet change post-meal posture advice; leaves open somatic modulation of bloating in symptomatic patients.
RCT (n=16)
Open-label
Random allocation
No
Does intentional abdominal distention worsen the perception of visceral sensations after a meal overload in healthy women?
Mean Difference: 0.7
Absolute Event Rate: 8% vs 7.3%
p-value: p=0.010
Somatic postural tone underlying abdominal distention worsens the perception of visceral sensations such as bloating after a meal.
Livovsky et al. (2021) conducted an RCT in Healthy (investigating abdominal bloating) (n=16). Diaphragmatic contraction vs. Diaphragmatic relaxation was evaluated on Sensation of bloating (0-10 scale) (MD 0.7, p=0.010). Intentional diaphragmatic contraction significantly increased the sensation of bloating induced by a meal overload compared to diaphragmatic relaxation (score 8.0 vs 7.3, p=0.010).
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