Key result
Sit-ups to task failure linked to ~25% lower twitch gastric pressure, indicating abdominal muscle fatigue.
Comparison
Sit-ups to task failure vs Baseline (before sit-ups)
Design
Other
Follow-up
30 minutes
Authors
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Twitch gastric pressure quantifies sit-up-induced abdominal fatigue; leaves open clinical relevance for respiratory training or rehabilitation.
Observational
Effect estimate: 25% decrease at 1 min
p-value: p=< 0.001
Twitch gastric pressure is a useful objective indicator of abdominal muscle contractility and fatigue, demonstrating that sit-ups lead to substantial low-frequency fatigue.
Suzuki et al. (1999) conducted an observational in Abdominal muscle fatigue. Sit-ups to task failure vs. Baseline (before sit-ups) was evaluated on Twitch gastric pressure (Pgat) (25% decrease at 1 min, p=< 0.001). Sit-ups to task failure significantly decreased twitch gastric pressure by 25% at 1 minute and 37% at 30 minutes (p < 0.001), demonstrating substantial low-frequency abdominal muscle fatigue.
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