TY - JOUR AU - Rössner , Stephan AU - Hylander , Britta AU - Hägg , Anna AU - Dye , Louise AU - Lawton , Claire AU - King , Neil AU - Blundell , John E PY - 1999/12/01 Y2 - 2024/03/28 TI - Effects of fasting or a vegetarian diet on subjective ratings of appetite and mood during strenuous physical activity JF - Food & Nutrition Research JA - fnr VL - IS - SE - Original Articles DO - 10.3402/fnr.v43i0.1769 UR - https://foodandnutritionresearch.net/index.php/fnr/article/view/100 SP - 105-108 AB - Thirty-four subjects participating in "fasting marches" at a health spa were studied during three days of hiking 14-27 km daily and the combined effects of either fasting (n=10) or a hypocaloric lactovegetarian diet (n=20). Hunger, satiety, tiredness, irritability and contentedness, assessed by visual analogue scales, and the energy intake (fasting fixed to 1.1 MJ, 253 kcal/day, lactovegetarians mean 4.8 MJ, 1147 kcal/day) assessed by dietary recall were analysed. Lactovegetarians on their hypocaloric diet experienced more hunger before meals than fasters but a similar degree of tiredness. The combination of exercise and a hypocaloric diet, probably resulting in varying degrees of ketonaemia, seems to lead to responses which can be explained by a combination of psychological and physiological reactions. Fasters, although less hungry than lactovegetarians, complied equally well with the endurance program, but displayed lower mood. Key words: appetite, exercise, fasting, hunger, mood ER -