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The relationship between energy intake and energy output through a study on physical activity energy expenditure (PAEE) and digestive hormones. The research involved 54 middle-aged men with sedentary lifestyles and used synchronized accelerometry and heart rate to observe prescribed and non-prescribed PAEE during an 18-week exercise intervention. The findings suggest that increased energy intake, rather than decreased energy expenditure, compensates for exercise regimens. The document also discusses various factors that influence energy intake, including mechanical sensing from the enteric nervous system, gastrointestinal hormones, and taste, smell, and sight.
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Johnson & Speakman 2001. J Exp Biol 204:1925–
Does Energy Intake Reflect Energy Output? Response to day-‐to-‐day varia'ons in expenditure Edholhm et al. Bri'sh Journal of Nutri'on. 1955. 9(3):286-‐300.
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Turner et al. (2010). Nonprescribed physical activity energy expenditure is maintained with structured exercise and implicates a compensatory increase in energy intake. Am J Clin Nutr 92: 1009-1016. Compensating during exercise regimen by increased EI, not decreased EE Control Exercise Intervention Prescribed EE Figure 1. Physical activity energy expenditure (PAEE) throughout the study, no exercise group vs. prescribed exercise
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