Study of Food Intake, Calories and Heat Production in Humans in Antarctica
Lipid profile, vitamin and hormone levels were analyzed in 17 subjects who completed the study in its two phases. In phase I the participants spent 47days sailing with hard work and rough seas, and the diet was rich in fat and poor in fresh foods. In this phase, glucose decreased and HDL-cholesterol, apo-AI, and TSH increased. Plasma retinol and α-tocopherol levels remained stable, γ-tocopherol, α-carotene and β-carotene significantly decreased, and lycopene significantly increased. Phase II lasted 49days including a 7-day long stop in port. This meant that a more varied diet was available and fresh foods were present in the hold. There was also less extreme physical activity. The metabolic pattern changed direction, glucose rose, HDL-cholesterol and apo-AI decreased and the levels of the vitamins that dropped in phase I started to increase. Lycopene significantly decreased.
Summary Provided By: