Resting longer between lifts doesn't make you lift more, but makes you feel less tired

Original Title

Inter-set rest configuration effect on acute physiological and performance-related responses to a resistance training session in terrestrial vs simulated hypoxia

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Summary

When guys lifted weights with short breaks (60s) vs long breaks (120s), they felt more burned and their hearts raced more—but they lifted the same total weight. Breathing thin air (like on a mountain) didn't feel the same as breathing fake thin air in a lab—even if oxygen levels were equal.

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Surprising Findings

Normobaric hypoxia (mask) reduced muscle oxygenation and lactate compared to hypobaric hypoxia (real altitude) at the same FiO₂.

Everyone assumes low oxygen = same stress, regardless of how it’s delivered. But this shows barometric pressure (real altitude) triggers stronger metabolic responses—even with identical oxygen levels.

Practical Takeaways

If you’re short on time, use 60-second rests between compound lifts to maximize metabolic stress without losing volume.

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