Passive heat exposure enhances VO2max and cardiac adaptations in runners🫀
Sauna and hot bath stocks on the rise!
Long-term passive heat acclimation enhances maximal oxygen consumption via haematological and cardiac adaptation in endurance runners
Study Details
This new study recruited 10 well-trained runners (64.5 ± 8.1 mL/kg/min) to 5-weeks of either…
🌡️ Hot water immersion (HWI: 5 × 45 min/week; ≥40°C)
⏰ Time-matched control
…alongside normal training.
Runners completed both conditions in a counter/balanced crossover design 🔀
Here is what they found ⬇️
Key Findings
HWI led to significant increases in…
🩸 Haemoglobin mass (+33 g)
📈 Blood volume (+284 mL)
🫀 Left ventricular end-diastolic volume (+10 mL)
These changes facilitated a significant increases in…
🫁 VO2max (+2.7 mL/kg/min)
🏃♂️ Treadmill speed at VO2max (+0.8 kmph)
Conclusion
Passive heat exposure leads to significant adaptations in the oxygen transport chain🫀
Resulting in practically and statistically significant improvements in aerobic capacity and performance ✅
Reference
https://pubmed.ncbi.nlm.nih.gov/41267396/
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