Among elite judo athletes, performing light-weight resistance exercises to muscle failure results in less increase in muscle size and strength compared to using heavier weights to failure or using...

Pro

Against

Mechanism

Synthesis from 1 study

How it works

When elite judo athletes lift light weights very fast until they can’t do another rep, their muscles don’t feel enough force or chemical stress to grow bigger or stronger — even if they do more reps — because heavy weights create more force and stress, which is what the body needs to adapt, as...

Most probable mechanism

In Simple Terms

When elite judo athletes train with light weights at 30% of their max and push to failure, the fast, explosive movements don’t create enough sustained force on the muscle fibers to trigger strong growth signals, and even though they do more reps, the muscles don’t get the same chemical stress as when lifting heavy weights — so they don’t get bigger or stronger as much, as shown in 10.1371/journal.pone.0307841.

Causal chain

Ballistic light-load training at 30% 1RM to failure generates lower absolute mechanical tension per muscle fiber due to reduced force production, limiting activation of mTORC1 signaling pathways that drive muscle protein synthesis, as observed in training outcomes from 10.1371/journal.pone.0307841.

Supported by evidence

which leads to

The rapid, low-resistance contractions in ballistic light-load training reduce time under tension and metabolic accumulation (e.g., lactate, inorganic phosphate), diminishing the cellular stress signals that normally amplify hypertrophy and strength adaptations, consistent with the diminished gains in muscle thickness and isometric strength reported in 10.1371/journal.pone.0307841.

Supported by evidence

which leads to

Despite higher total training volume, the combination of low mechanical tension and insufficient metabolic stress fails to recruit and sustain activation of high-threshold motor units to the same extent as heavy-load training, resulting in smaller gains in muscle thickness and isometric strength, as demonstrated in 10.1371/journal.pone.0307841.

Supported by evidence

Evidence from Studies

Supporting (1)

Community contributions welcome

Resistance training leading to repetition failure increases muscle strength and size, but not power-generation capacity in judo athletes

Randomized Controlled Trial

Human

2024

Contradicting (0)

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Resistance training leading to repetition failure increases muscle strength and size, but not power-generation capacity in judo athletes

Score: 60

DOI: 10.1371/journal.pone.0307841

Similar Assertions

For elite male judo players, doing explosive strength training with light weights—without pushing to the point of exhaustion—works just as well or even better for building muscle and strength than going until their muscles give out.

93%

For male judo athletes who are already pretty advanced, lifting heavy weights for 6 weeks might build more muscle and strength than doing fast, light lifts—even if both workouts push muscles to the max.

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In well-trained male judo athletes, six weeks of resistance training using either heavy weights to failure or light weights without failure increases the size and maximum strength of the elbow flexor muscles, but does not improve their ability to generate power during rapid movements.

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Among elite judo athletes, the total amount of resistance training does not reliably determine increases in muscle size or strength; instead, how heavy the weights are and how fatigue is managed during training may matter more.

79%

In elite judo athletes, performing resistance training with different loads or to muscle failure does not change their ability to generate power, as measured by specific force and velocity metrics.

78%