UNICAMP / EurekAlert · 22 Sept 2026 · Exercise
Seven days of stair-climb work shrank visceral fat cells in obese male mice before body weight changed
Study (animal). Leandro Moura and colleagues at UNICAMP report in Life Sciences (doi 10.1016/j.lfs.2026.124546; paper 23 June 2026; EurekAlert 22 September 2026). Male mice ate either a standard diet or a high-fat diet. Obese mice then either stayed sedentary or did seven strength-training sessions: 20 climbs of a 70 cm staircase at about 70% of the load they could carry, with 60 to 90 seconds of rest. The high-fat diet continued, so the training was the difference. Body weight did not fall. The trained mice still had less mesenteric fat, the fat around the intestines, and smaller fat cells. Training increased the pairing of ABHD5 with ATGL, a step in breaking down stored fat, and lowered Scd1, a gene tied to making fat. The authors describe the smaller fat cells as a shift toward metabolic health before any change on the scale. This is a one-week mouse experiment, not a human program. Educational notes.
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