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Area of Science:

  • Exercise Physiology
  • Pediatric Exercise Science
  • Sports Medicine

Background:

  • Accurate exercise intensity monitoring is crucial for effective training and health outcomes.
  • The Borg 6-20 rating of perceived exertion (RPE) scale is commonly used to self-monitor exercise intensity.
  • Understanding age-related differences in RPE perception is important for tailored exercise prescriptions.

Purpose of the Study:

  • To compare children's and adults' ability to execute prescriptive exercise using the Borg 6-20 RPE scale.
  • To evaluate exercise intensity reproduction during both controlled and self-paced activities in children and adults.
  • To inform exercise prescription guidelines for pediatric populations.

Main Methods:

  • Seventeen children (ages 8-14) and 19 adults performed 2-minute cycling or a 400m walk/run at four target RPE levels (7, 10, 13, 16).
  • Pace-controlled cycling involved setting resistance, while walk/run was self-paced.
  • Laboratory-determined criteria were used for comparison.

Main Results:

  • Children and adults showed similar ability in reproducing incremental intensities during pace-controlled cycling.
  • Adults' performance was closer to the laboratory criterion than children's during cycling.
  • Both groups overexerted during self-paced walk/run tasks.
  • Children could only differentiate RPE 7 from other levels in self-paced activities.

Conclusions:

  • Children's ability to accurately perceive and reproduce exercise intensity using the Borg RPE scale differs from adults, particularly in self-paced activities.
  • Exercise prescriptions for children relying on self-monitored intensity require adequate practice or adjustments for different activity modes.
  • Further research is needed to refine RPE-based exercise guidelines for pediatric populations.