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University revision · Nutrition and Dietetics

Energy Balance and Energy Expenditure

This topic explores the principles of energy balance, examining the components of energy intake (hunger, appetite, satiation) and energy expenditure (basal metabolism, physical activity, thermic effect of food). Designed for Zambian college and university students in nutrition, dietetics, or exercise science, the module covers methods to estimate energy requirements, factors influencing basal metabolic rate (age, body composition, hormones), and the assessment of body composition via fatfold measures, bioelectrical impedance, and DEXA. Students will learn to calculate energy needs using standardized equations and understand the physiological adaptations during severe stress, chronic diseases, and wasting syndromes such as cancer cachexia and HIV-related malnutrition. Proficiency in energy balance concepts is essential for excelling in tertiary nutrition examinations and for careers in weight management, clinical dietetics, or sports nutrition within Zambia. The topic integrates theoretical knowledge with practical application, enabling learners to develop personalized energy prescriptions and contribute to national efforts addressing both undernutrition and overnutrition.

Nutrition and Dietetics Biomedical Science(Degree)
Start revision
Questions
100
Est. time
~100 min
Views
0
Pass mark
50%

How this revision works

Outcomes

If you passOutstanding achievement! Understanding energy balance equips you to address one of the core challenges in nutrition—managing weight and metabolic health. Your ability to assess energy needs and body composition will be invaluable in clinical and public health roles across Zambia.
If you don't pass yetEnergy balance involves both conceptual and quantitative elements. If you’re struggling, separate intake from expenditure, and practice calculating BMR and total energy needs. Use the provided tables and equations step by step. Review the factors affecting BMR and body composition methods. Re-attempt the problems—each calculation improves your proficiency.

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