This study aims to compare the effects of long-term rowing training on aerobic capacity, physical fitness, heart rate variability, and psychological performance in novice rowers, professional rowers, and healthy controls. Approximately 60 adults aged 18-65 years will be enrolled and allocated into three groups: novice rowers, professional rowers, and a non-exercising control group. Participants in the rowing groups will complete an 8-week supervised rowing ergometer training program (twice weekly), while the control group will maintain their usual daily activities without structured exercise. Assessments will be performed before and after the intervention and will include aerobic capacity (shuttle walk test, 500-m and 2000-m rowing ergometer tests), muscle strength, muscle power, muscular endurance, core stability, flexibility, agility, posture, heart rate variability, flow state, and mental toughness. The study is designed to provide a comprehensive evaluation of the physiological and psychological adaptations associated with rowing training at different levels of experience and to identify factors that distinguish novice and elite rowers.