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Mother's exercise during pregnancy programmes vasomotor function in adult offspring

•  What is the central question of this study? Adverse maternal behaviour during pregnancy is well known to have lifelong health consequences for offspring. We asked whether a positive maternal health behaviour may have positive long‐term effects for offspring. Specifically, we investigated whether aerobic maternal exercise improves nitric oxide signalling in femoral arteries of adult swine. •  What is the main finding and its importance? For the first time, a fetal programming outcome due to gestational exercise is reported in adult offspring. Second, contrary to previous speculation regarding the impact of in utero alterations on nitric oxide signalling, our data suggest differential myosin phosphorylation in vascular smooth muscle.