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Related Concept Videos

Behavior Modification01:21

Behavior Modification

Behavioral approaches have often been criticized for ignoring mental processes and focusing solely on observable behavior. However, these approaches provide an optimistic perspective for individuals seeking to change their behaviors. Rather than concentrating on intrinsic personality traits, behavioral approaches suggest that even longstanding habits can be modified by changing the reward contingencies that maintain them.
A real-world application of operant conditioning principles is applied...
Exercise and Cardiac Output01:17

Exercise and Cardiac Output

Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be met...

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Related Experiment Video

Updated: Jun 3, 2026

Physical Activity Measurement in Children Accepting Table Tennis Training
06:51

Physical Activity Measurement in Children Accepting Table Tennis Training

Published on: July 27, 2022

Can we modulate physical activity in children?

J J Reilly1

  • 1University of Strathclyde, Physical Activity for Health Research Group, School of Psychological Sciences and Health, Jordanhill Campus, Southbrae Drive, Glasgow, Scotland, UK. John.Reilly@glasgow.ac.uk

International Journal of Obesity (2005)
|March 17, 2011
PubMed
Summary
This summary is machine-generated.

The

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Area of Science:

  • Pediatric obesity prevention
  • Childhood physical activity research
  • Behavioral science in public health

Background:

  • Concerns exist regarding the 'Activitystat' hypothesis potentially limiting the effectiveness of physical activity interventions for childhood obesity.
  • The 'Activitystat' proposes a biological mechanism to maintain a low set point for physical activity, potentially counteracting obesity prevention efforts.

Purpose of the Study:

  • To critically evaluate the 'Activitystat' hypothesis in the context of childhood obesity prevention.
  • To synthesize evidence regarding the influence of physical activity on pediatric obesity and the validity of the 'Activitystat' concept.

Main Methods:

  • Systematic review of intervention studies targeting childhood obesity through physical activity.
  • Analysis of empirical research testing the 'Activitystat' hypothesis.
  • Examination of studies on the heritability of physical activity in children and adolescents.
  • Review of physical activity levels across diverse global environments.

Main Results:

  • The evidence reviewed is not consistent with the 'Activitystat' hypothesis as currently formulated.
  • Studies on physical activity heritability and cross-cultural variations do not support a fixed low set point for activity.
  • Existing data suggests physical activity interventions for childhood obesity are not inherently undermined by such a mechanism.

Conclusions:

  • The 'Activitystat' hypothesis, in its present form, is not supported by the current body of evidence.
  • Childhood obesity prevention strategies should increase, not decrease, their emphasis on promoting physical activity.
  • Further research should explore factors influencing physical activity in children beyond the proposed 'Activitystat' mechanism.