Fact of the day

Saturday, 15 August 2026

Trainingwell supported · human dataDiscovery of the day

A meta-analysis of 21 studies found endurance training done alongside lifting reduced gains in hypertrophy, strength and especially power versus lifting alone, with interference worsening as endurance frequency and duration increased. Running, but not cycling, was linked to significant decrements in hypertrophy and strength in this analysis.

Study design
Meta-analysis
Journal
J Strength Cond Res
Evidence
well supported

What it shows: Meta-analysis of 21 studies; the moderator findings on frequency, duration and modality are correlational across studies, not head-to-head trial comparisons.Meta-analysis · J Strength Cond Res

Concurrent training: a meta-analysis examining interference of aerobic and resistance exercises. J Strength Cond Res 2012Read the study →

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