Impact of High-Volume Upper Limb Training on Physical and Cognitive Outcomes

Engaging in regular and appropriately structured physical activities is a critical component of an individual's lifestyle and represents a lifelong habit essential for promoting overall well-being. Research increasingly emphasizes the significance of such activities, particularly in the prevention and management of various health conditions (Martin, Richardson, Weiller, \& Jackson, 2004).A sedentary lifestyle is considered one of the most serious health issues faced by individuals in the modern world.Previous research has established high-intensity interval training (HIIT) as an effective method for enhancing cardiovascular health, sparking interest in the relationship between exercise intensity and cognitive function. Most studies to date have focused on treadmill and lower extremity ergometer exercises; however, evidence regarding the efficacy of high-volume upper extremity exercises in improving physical and cognitive performance among sedentary adults remains limited and inconsistent. Upper extremity motor function has been proposed as a potential biomarker for cognitive impairment and may contribute to distinguishing healthy aging trajectories. This study aims to compare the effects of high-volume and low-volume upper extremity exercise in sedentary adults, testing the hypothesis that one exercise regimen may be superior in enhancing both physical and cognitive performance, as well as cognitive function.