The Claim
Oxygen pulse, a measure of stroke volume efficiency, is higher in endurance athletes (22.7 ± 5.8 mL/beat) than in skill athletes (14.9 ± 3.8 mL/beat), reflecting a greater cardiac output per heartbeat in sports with high aerobic demands.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Endurance athletes have a higher oxygen pulse than skill athletes, meaning their hearts deliver more oxygen with each beat during physical activity.
See the scientific wording
Oxygen pulse, a measure of stroke volume efficiency, increases progressively from skill athletes (14.9 ± 3.8 mL/beat) to endurance athletes (22.7 ± 5.8 mL/beat), indicating greater cardiac output per heartbeat in sports with high aerobic demands.
The heart's left chamber grows larger and pumps more forcefully, so each beat moves more blood with less effort, allowing more oxygen to reach muscles with every heartbeat.
What the research says
1 studyStudy: Cardiopulmonary Exercise Testing in Elite Athletes: Rethinking Sports Classification
Endurance athletes, like marathon runners, have hearts that pump more blood with each beat than athletes in other sports, helping them deliver more oxygen to muscles without needing to beat their hearts faster. This study measured exactly that and found it to be true.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.