The ActivityStat Hypothesis

摘要: The ActivityStat hypothesis suggests that when physical activity is increased or decreased in one domain, there will be a compensatory change another order to maintain an overall stable level of energy expenditure over time. debate gaining momentum the literature and most research date based on observational studies. objective this paper conceptually clarify examine experimental aiming demonstrate refute compensation using systematic review process. A was conducted electronic database searches with aim detecting studies experimentally investigating expenditure. Included were critically appraised specifically designed tool address conceptual considerations hypothesis. Searches identified 28 met inclusion criteria. Publications spanned 26 years had multiple methodological approaches, including randomized non-randomized controlled trials, crossover designs, cluster trials pre-post trials. Populations included ranged from children, adults elderly, across range weight statuses used both aerobic, resistance mixed-exercise interventions. timeframe interventions 1 day 4 years outcomes measured doubly labelled water, accelerometry, heart rate monitoring, resting metabolic rate, indirect calorimetry, pedometry, subjective recall questionnaire activity-related time index. Fifteen provided evidence compensation, while 13 did not. Subgroup analyses by population, type duration intervention, status study quality also showed mixed findings. There substantial body has largely been overlooked debate. However, currently inconclusive lacks cohesive approach question ActivityStat. Recommendations for design future are presented.