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Energy Expenditure

EE: Rest Periods (2006)

Effects of Different Length Rest Periods on Resting Metabolic Rate

Assessment
In healthy adults, how long of a rest period is needed prior to initiating an RMR measure?
- Conclusion
  
  A minimum rest period length of 10-20 minutes is an adequate testing condition to obtain an accurate measure of a 24-hour resting metabolic rate in healthy adults that have traveled to the test measurement site.
- Grade: III
  - Grade I means there is Good/Strong evidence supporting the statement;
  - Grade II is Fair;
  - Grade III is Limited/Weak;
  - Grade IV is Expert Opinion Only;
  - Grade V is Not Assignable.
- Evidence Summary: What are the effects of different length rest periods on resting metabolic rate?
In ill or hospitalized, adult patients, how long of a rest period is needed prior to initiating an RMR measure?
- Conclusion
  
  One study of neutral quality rating (Swinamer, 1987) representing 10 critically ill individuals (27-79 y) with APACHE II score of 12-34, and a sepsis score of 0-23 indicates that during the first 30 minutes after patient activities (such as patient weighing, repositioning, and chest physiotherapy), a group mean RMR increase of 5.8±4.3% occurred. Shorter times were not reported. Two narrative reviews are most frequently cited for identifying rest period lengths provide the foundation for the currently accepted 30-minute rest length for adult patients in critical illness settings.
  
  Consensus of expert panel members recommend further research to determine if RMR measures following shorter rest periods (i.e., 5, 10, or 15 minutes) are statistically or clinically significant than RMR measures following a 30 minute rest period in all types of ill adults in the acute care settings.
- Grade: IV
  - Grade I means there is Good/Strong evidence supporting the statement;
  - Grade II is Fair;
  - Grade III is Limited/Weak;
  - Grade IV is Expert Opinion Only;
  - Grade V is Not Assignable.
- Evidence Summary: What are the effects of different length rest periods on resting metabolic rate?
In stable, acute care adult patients, what are the energy measurement differences if rest period lengths vary before measuring energy expenditure?
- Conclusion
  
  An international study of negative research quality design (Schols, 1992) indicates individual RMR differences between a measurements performed on 12 older adult COPD patients after awakening, being transported in a wheelchair to the measurement site and allowing a 7-minute acclimatization period compared to a RMR measure taken after light physical activities and allowing a 20-minute rest were les than 70 kcals/day.
- Grade: V
  - Grade I means there is Good/Strong evidence supporting the statement;
  - Grade II is Fair;
  - Grade III is Limited/Weak;
  - Grade IV is Expert Opinion Only;
  - Grade V is Not Assignable.
- Evidence Summary: What are the effects of different length rest periods on resting metabolic rate?