Definition
The phenomenon where concurrent endurance and strength training can compromise gains in both modalities, because your body isn't a limitless adaptation machine. It's biology's version of 'you can't have your cake and deadlift too.'
Example Usage
He experienced the interference effect trying to build a powerlifting total while marathon training, excelling at neither.
Origin
From exercise science research in the 1980s studying concurrent training adaptations
Fun Fact
The interference effect is why elite powerlifters aren't doing marathon training and vice versa—specialization matters when you want to be actually good.
Source: Exercise physiology research on concurrent training
Related Terms
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