Isometric Handgrip Training and Cardiovascular Risk Modulation: State of the Art.

Cardiometabolic diseases remain the leading cause of morbidity and mortality worldwide, despite major advances in pharmacological and lifestyle interventions. Exercise training is a cornerstone of prevention and treatment; however, adherence to traditional aerobic programs remains suboptimal. Isometric handgrip (IHG) training has emerged as a simple, time-efficient, and potentially effective strategy for improving cardiovascular and metabolic outcomes. This state-of-the-art review synthesizes current evidence on the physiological mechanisms underlying IHG training, including autonomic modulation, vascular function improvement, endothelial adaptation, and metabolic regulation. We summarize clinical data regarding its effects on blood pressure, arterial stiffness, endothelial function, insulin sensitivity, and inflammatory markers. Special attention is given to its applicability in specific populations, including hypertensive patients, individuals with metabolic syndrome, heart failure patients, and cancer survivors. We also discuss methodological heterogeneity across studies, safety considerations, and knowledge gaps. Finally, we outline future research directions needed to define optimal protocols and clarify long-term cardiometabolic benefits. IHG training represents a promising adjunctive strategy within cardiometabolic prevention and rehabilitation programs.