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Related Concept Videos

Exercise and Muscle Performance01:27

Exercise and Muscle Performance

Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
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Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis
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A school-based exercise intervention program increases muscle strength in prepubertal boys.

Susanna Stenevi-Lundgren1, Robin M Daly, Magnus K Karlsson

  • 1Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, 22100 Lund, Sweden.

International Journal of Pediatrics
|July 24, 2010
PubMed
Summary
This summary is machine-generated.

Increased school physical education significantly boosts lean body mass and muscle strength in young boys. More exercise time enhances physical development in pre-pubertal children.

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Published on: July 5, 2017

Area of Science:

  • Pediatric Exercise Science
  • Sports Medicine
  • Human Physiology

Background:

  • Childhood obesity and sedentary lifestyles are growing concerns.
  • Optimizing physical activity in schools is crucial for child development.
  • Understanding the impact of increased physical education on pre-pubertal boys is important.

Purpose of the Study:

  • To evaluate the effects of an enhanced school-based exercise program on muscular function, physical ability, and body composition.
  • To compare outcomes between pre-pubertal boys in an intensive exercise program versus a standard physical education curriculum.

Main Methods:

  • Prospective controlled intervention study over 12 months.
  • Participants: 68 boys (6-8 years) in an exercise program (200 min/week) vs. 46 controls (60 min/week).
  • Measurements: Dual energy X-ray absorptiometry (DXA) for body composition, isokinetic dynamometry for muscle strength, and vertical jump height.

Main Results:

  • The exercise group showed significantly greater gains in lean mass and fat mass (P < .001).
  • Body mass-adjusted knee extensor and flexor peak torque increased significantly more in the intervention group (P < .01).
  • No significant difference in vertical jump height was observed between groups.

Conclusions:

  • Increasing school physical education from 60 to 200 minutes per week positively impacts lean body mass and muscle strength development.
  • Enhanced physical education programs can be effective in improving key physical attributes in pre-pubertal boys.
  • This study highlights the benefits of structured, increased physical activity during early developmental stages.