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How does high-intensity interval training (HIIT) improve cardiovascular VO2 max?
Why does doing short, brutal 30-second sprints improve my lung capacity faster than jogging slowly for an entire hour?
F
FitLifter
asked 1mo ago · 10 rep
1 Answer(s)
0
HIIT forces your heart and lungs to operate at their absolute maximum capacity (anaerobic threshold). This extreme stress triggers rapid biological adaptations, forcing the body to build new capillaries and increase mitochondrial density in muscles to process oxygen much more efficiently (higher VO2 max).
S
SportsPhysio
answered 1mo ago