The Role of Equipment in Trainers' Performance and the Contribution of Internal Marketing: Evidence from Fitness Centers in Thessaly, Greece

This study investigates the impact of equipment quality and internal marketing practices on the performance of fitness trainers in private fitness centers in the region of Thessaly, Greece. Using quantitative methodology and structured questionnaires, the research examines how motivation, communication, training, and organizational support influence employee performance and job satisfaction. The findings highlight the importance of strategic internal marketing in service organizations and provide practical implications for human resource management in the fitness industry.