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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.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Mass and Weight01:19

Mass and Weight

Mass and weight are often used interchangeably in everyday conversation. For example,  medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the acceleration due to...
Mass and Weight01:19

Mass and Weight

Mass and weight are often used interchangeably in everyday conversation. For example,  medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the acceleration due to...
Isotonic and Isometric Muscle Contractions01:22

Isotonic and Isometric Muscle Contractions

Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
Isotonic contractions
Isotonic contractions occur when a muscle changes length while the...
Apparent Weight01:09

Apparent Weight

True weight is the measure of the gravitational force acting on an object. However, if the object accelerates, its measured weight is different from its true weight. Similar observations can be made when the object is submerged in water. An object's weight in water is its apparent weight, which is equal to the difference between its true weight and the buoyant forces.
Consider a person standing on a bathroom scale inside an elevator. If the scale is accurate at rest, its reading equals the...
Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...

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Multidisciplinary Approach to Obesity Management: A Case Report
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Online weight training.

John M McNamara1, Ricky L Swalm, David J Stearne

  • 1Department of Physical Education, St. Francis College, Brooklyn Heights, New York, USA. jmcnamara@stfranciscollege.edu

Journal of Strength and Conditioning Research
|June 12, 2008
PubMed
Summary

Online weight training courses can improve knowledge but not physical strength. Lack of accountability in online settings may hinder strength gains, suggesting technology limits in fitness education.

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Area of Science:

  • Exercise Science
  • Educational Technology
  • Sports Medicine

Background:

  • Traditional weight training classes are a common method for teaching resistance exercises.
  • Emerging technologies offer new modalities for distance learning in physical education.
  • The efficacy of online learning for practical skills like weight training requires investigation.

Purpose of the Study:

  • To compare the effectiveness of a traditional weight training class with technology-enhanced (hybrid and online) formats.
  • To determine if students can acquire resistance exercise knowledge and skills through online video demonstrations.
  • To assess the impact of different learning environments on strength gains and knowledge acquisition.

Main Methods:

  • Three groups of university students (n=79) participated in 16-week weight training courses: traditional, hybrid, and online.
  • All groups had identical curricula and workout requirements.
  • Assessments included pre/post measures of upper-body strength (bench press), lower-body strength (back squat), and written knowledge tests.

Main Results:

  • All groups demonstrated significant improvements in knowledge (p < 0.05).
  • The online group, which lacked mandatory attendance, showed significantly lower gains in bench press and squat strength (p < 0.05).
  • Self-reported workout accuracy and student motivation/accountability may have influenced online group outcomes.

Conclusions:

  • Online weight training courses can effectively enhance theoretical knowledge but are less effective for improving muscular strength.
  • A lack of direct supervision and accountability in online settings may impede practical skill development and strength progression.
  • Integrating technology in physical education requires careful consideration of its limitations and the potential need for monitoring systems to ensure adherence and efficacy.