• Assessment
    How long is resting metabolic rate affected following walking, jogging or cycling in old, very old, obese or physically ill adults?
    • Conclusion

      Generalizability to old and very old individuals or to the obese or physically ill is not possible because no study participants were from these groups.

    • 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.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.
    How long is resting metabolic rate affected following cycling in healthy adults?
    • Conclusion

      One study of neutral quality design (Short, Wiest, Sedlock, 1996) with 10 adults, aged 22-32 years, and one study of high quality design (Short and Sedlock, 1997) with 22 adults aged 22-32 years, reported that the increase in energy expenditure associated with cycling at low, moderate, or high intensities (ranging between 35-70%VO2max) for 15 to 30 min returned to the group mean RMR levels between 6 to 60 minutes following exercise. In individuals who cycled for 30 min at 70%VO2max, the time to return to baseline RMR was shorter for the trained athletes (40 ± 15 min) than for the untrained subjects (50 ± 14 min), and all subjects returned to baseline RMR by 80 minutes following exercise (Short and Sedlock, 1997). In one meta-analysis (Bahr, 1992) combining data of 12 physically active men (but not engaged in regular endurance training and 20-26 years) that pedaled a bicycle at a constant 75 90 rotations (6 cycled for a group mean of 20-, 40- and 78 minutes corresponding to 69-73% VO2 max and 6 cycled at 29%, 50%, and 75% of VO2max for 80 minutes), group mean VO2 consumption was .05, .013, and .020 Liters/min at 4, 9 and 12-hours after exercise, respectively. A measure taken 9-hours after exercise (i.e., 5% oxygen consumption above baseline) and extrapolated to represent 24-hour RMR could be clinically significant.

       

    • 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.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.
    How long is resting metabolic rate affected following walking or jogging in healthy adults?
    • Conclusion

      Three studies of neutral quality design (Burleson et al. 1998; Willms and Plowman, 1991; Freedman-Akabas, et al., 1985) conducted with a total of 48 adults, aged 20-45 years, reported that the increase in energy expenditure associated with walking or jogging on a treadmill at low to moderate exercise intensities (45-65% VO2max) for 20-30 min returned to baseline RMR levels between 30 to 60 minutes following the end of the exercise period. Group mean RMR measured at 60-70 minutes following exercise was within ± 5% of the baseline RMR measured prior to exercise.

    • 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.
      • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
      • Moderate (B) means we are moderately confident in the effect estimate;
      • Low (C) means our confidence in the effect estimate is limited;
      • Very Low (D) means we have very little confidence in the effect estimate.
      • Ungraded means a grade is not assignable.