Background: Fitness-related misinformation is widespread, yet its prevalence, sources, and behavioral impact among older adults remain insufficiently explored. This study investigated awareness of common fitness myths and evaluated the perceived effectiveness of evidence-based educational approaches within an online community of older adults.

Methods: A structured survey was distributed to forum (Workout & Fitness Buddort) participants, assessing belief in prevalent fitness myths, primary information sources, confidence in identifying misinformation, and self-reported changes in exercise behavior. Qualitative responses regarding educational preferences and behavioral adaptations were also analyzed.

Results: Sixty-seven percent of participants reported low confidence in distinguishing accurate information from myths, despite frequent exposure to misinformation—most commonly through social media. The most persistent misconceptions included “sweating equals fat burning” (67%) and “spot reduction is effective” (33%). Although participants did not directly alter workouts based on myth correction, many reported shifting toward age-appropriate activities such as tai chi. Factors contributing to myth rejection were evenly distributed among personal experience, formal education, and conflicting outcomes.

Conclusion: Targeted fitness education for older adults should utilize diverse, evidence-based formats and professional guidance. Emphasizing practical, age-appropriate strategies may be more effective in reducing susceptibility to misinformation than directly challenging individual myths.

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