1. Reversal theory as a theory of the emotions;Apter,1988
2. Stress from the reversal theory perspective;Apter,1989
3. Anxiety reduction following exercise and meditation;Bahrke;Cognitive Therapy and Research,1978
4. Stress reduction and mood enhancement in four exercise modes: Swimming, body conditioning, hatha yoga and fencing;Berger;Research Quarterly for Exercise and Sport,1988
5. Self-reported mood in competitive squash;Cox;Personality and Individual Differences,1989