1. ACSM's Guidelines for Exercise Testing and Prescription;American College of Sports Medicine,1995
2. Automatic response patterns during sadness and mirth;Averill;Psychophysiology,1969
3. Validity of CO2-rebreathing cardiac output during rest and exercise in young adults;Beekman;Medicine & Science in Sports & Exercise,1984
4. A positive emotion, the eustres of mirthful laughter modulates the immune system lymphokine interferon-gamma;Berk;Psychoneuroimmunology Research Society Annual Meetings,1995
5. Reproducibility of the CO2 Rebreathing Method to Estimate Cardiac Output at Rest and During Exercise;Boone;Abstract. Southeast Chapter of the American College of Sports Medicine,1990