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Area of Science:

  • Ophthalmology
  • Exercise Physiology
  • Sports Medicine

Background:

  • Intraocular pressure (IOP) is a critical factor in ocular health.
  • Resistance training, such as weightlifting, is a popular form of exercise.
  • The impact of specific weightlifting exercises on IOP is not fully understood.

Purpose of the Study:

  • To investigate the acute effects of leg press weightlifting on intraocular pressure (IOP).
  • To quantify IOP changes during and immediately after different resistance training protocols.

Main Methods:

  • Prospective cohort study involving 24 healthy young adults (average age 22.7 years).
  • Participants performed leg press exercises at 95% (1RM), 75% (6RM) of maximal load, and isometric pushes (ISO).
  • IOP was measured using a rebound tonometer; blood pressure and heart rate were monitored continuously.

Main Results:

  • A transient and substantial increase in IOP was observed during all tested leg press regimens.
  • Average IOP increased by 26.4 mm Hg, reaching a maximum of 40.7 mm Hg.
  • One participant experienced an acute IOP spike to 70 mm Hg.

Conclusions:

  • Resistance training, exemplified by leg press, induces dramatic, short-term IOP fluctuations.
  • Regular exposure to such IOP spikes may represent a significant risk factor for glaucoma development.
  • Further research is needed to confirm these findings in individuals with pre-existing glaucoma.