Maximize Heart Adaptation Through Intensity

For most individuals, stroke volume reaches its peak at low exercise intensities, while some athletes can increase it to around 90% of their VO2 max. The goal of maximizing cardiac stress is crucial for heart adaptation, facilitating enhanced blood and oxygen delivery, which is vital for achieving a higher VO2 max. Although interval training is closely associated with improving VO2 max, its impact becomes minimal for athletes who are already highly trained. Research highlights three primary attributes that characterize endurance athletes, underscoring the nuanced relationship between training intensity and cardiovascular adaptation.