BOŞ ZAMAN FAALİYETİ OLARAK BİSİKLET SPORU YAPAN BİREYLERİN BENLİK SAYGISI DÜZEYLERİNİN İNCELENMESİ (INVESTIGATION OF THE SELECTION OF SELF-RESPONSE OF INDIVIDUALS IN BIKE SPORTS AS EMOTIONAL ACTIVITY) - Yavuz YILDIZ -- Cengiz TAŞKIN | The Journal of Academic Social Science