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Analysis v1
Strong Support

Even when the air has the same amount of oxygen, breathing it through a mask at low pressure makes your body produce less lactic acid and keeps your heart rate lower during weightlifting than being at real high altitude.

49
Pro
0
Against

Evidence from Studies

Supporting (1)

49

Community contributions welcome

49

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

Randomized Controlled Trial
Human
2022

The study found that when people exercised in low-oxygen air at the same oxygen level, those in the normal-pressure environment (normobaric) had lower heart rates and less lactic acid buildup than those in low-pressure air (hypobaric), meaning their bodies were under less stress.

Contradicting (0)

0

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No contradicting evidence found

Source Study

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

Score: 49
DOI: 10.7717/peerj.13469

Similar Assertions

Even if the air has the same oxygen level, being at real high altitude makes your body respond differently to weightlifting than breathing the same air through a mask—your muscles get more oxygen, you produce more lactic acid, and your heart works harder.

49
0
88%

Breathing air with less oxygen through a mask (simulated altitude) makes your muscles get less oxygen during exercise than being at real high altitude, even when the oxygen level in the air is the same.

49
0
79%

When you breathe oxygen-poor air through a mask for only 5 minutes before lifting weights, your blood oxygen level drops more than when you’re at real high altitude—even if the air has the same oxygen content.

0
49
76%