Effect of mental training programme in improving mental toughness and coping abilities among Tehran High School student athletes / by Mohammad Ali Rasti, 1961-, author 608256, Zainudin Abu Bakar, 1965-, supervisor 278992, Zainal Abidin Zainuddin, 1971-, supervisor 335233, Farzad Valiollah, supervisor 608257, Fakulti Pendidikan 8185