The Claim
In well-trained male kayak sprint athletes, both resistance-type and paddling-based high-intensity interval training increase resting stroke volume and left ventricular end-diastolic volume, with no statistically significant difference between the two training modalities.
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.
In elite male kayak sprinters, both resistance training and paddling-based high-intensity interval training increase the amount of blood the heart holds and pumps at rest, and the two types of training produce the same effect.
See the scientific wording
In well-trained male kayak sprint athletes, both resistance-type and paddling-based high-intensity interval training improve resting stroke volume and left ventricular end-diastolic volume, indicating enhanced cardiac filling capacity, with no significant difference between the two training modalities.
Repeated high-intensity exercise pushes more blood back to the heart, stretching the left ventricle to hold more blood, and makes the heart muscle contract more forcefully, so each beat pumps out more blood.
What the research says
1 studyIn elite kayak athletes, both intense resistance training and intense paddling workouts made the heart better at filling with blood at rest — and both worked about the same. Neither was clearly better than the other for this specific heart benefit.
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.