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COMMON MYTHS

Will Jump Training Make Your Calves and Thighs Bulky?

Jump training's parameters favor neural adaptation and power, not size. Here is why the bulk fear is mostly unfounded.

August 5, 20265 min read

Hypertrophy is tightly linked to training parameters — and jump training uses the parameters that grow power, not size.

The parameter story

Typical jump training — low reps, high power, long rest — favors neural adaptation and power output, with small hypertrophy effects. Size comes from the bodybuilding recipe: moderate reps (8–12 RM), short rests (60–90 s) and high volume.

What jumpers actually look like

Elite jumpers usually have defined, athletic legs — functional muscle, not show muscle. The training that makes you jump higher makes you more powerful and more defined.

The female-specific worry

Female testosterone is roughly 5–10% of male levels, so natural hypertrophy potential is limited. Jump training will make you firmer and more defined — not bulky.

Key takeaways

  • Power training does not produce bodybuilding levels of size.
  • Size requires high-rep, short-rest, high-volume work.
  • Female athletes can train jumps without meaningful bulk.

References

  • Schoenfeld et al. (2016) J Strength Cond Res
  • NSCA Essentials of Strength Training and Conditioning (4th ed.), Ch. 15

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