The Claim

Training with high-load dumbbell overhead press to muscular failure reduces prone plank endurance by approximately 20–30% in recreational collegiate weightlifters aged 18–24, while training stopped 3–4 repetitions before failure preserves core endurance.

Source: Acute Effects of High-Load Training to Failure vs. Non-Failure on Posture and Core Endurance in Collegiate Weightlifters: A Crossover Study

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
51score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Recreational collegiate weightlifters aged 18–24 who perform high-load dumbbell overhead presses to muscular failure experience a 20–30% reduction in how long they can hold a prone plank immediately after exercise, whereas those who stop 3–4 repetitions before failure maintain their plank endurance.

See the scientific wording

Training with high-load dumbbell overhead press to muscular failure reduces prone plank endurance by approximately 20–30% in recreational collegiate weightlifters aged 18–24, while training stopped 3–4 repetitions before failure preserves core endurance, indicating that failure-based protocols may impair trunk stability immediately after exercise.

Why this might work

Lifting heavy weights until exhaustion tires out the muscles in the shoulders, neck, and back, which messes up the body's ability to sense where those joints are. This confuses the brain's signals to the core muscles, so they can't hold the body steady during a plank. The core muscles themselves also get too tired to stay active, causing the hips to drop and the plank to end early.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Acute Effects of High-Load Training to Failure vs. Non-Failure on Posture and Core Endurance in Collegiate Weightlifters: A Crossover Study

    Doing heavy overhead presses until you can't do another rep makes your core so tired that you can't hold a plank as long afterward. But if you stop a few reps before exhaustion, your core stays strong and you can hold the plank just fine.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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