METs in adults while playing active video games: a metabolic chamber study

Area of Science:

• Exercise Physiology
• Sports Science
• Human Movement Analysis

Background:

• Motion-controlled video games (Nintendo Wii Sports) and force plate games (Wii Fit Plus) are increasingly popular.
• Understanding the energy expenditure (EE) of these activities is crucial for assessing their health benefits.

Purpose of the Study:

• To quantify the energy expenditure (EE) of various activities within Wii Sports and Wii Fit Plus.
• To determine the intensity levels of these exergames.

Main Methods:

• Twelve adults participated in all Wii Sports (5 activities) and Wii Fit Plus (63 activities) exercises.
• Energy expenditure was measured using indirect calorimetry in a metabolic chamber to allow for free movement.
• Metabolic Equivalent of Task (MET) values were calculated for each activity.

Main Results:

• A wide range of MET values were observed, from 1.3 (Lotus Focus) to 5.6 (single-arm stand).
• Mean MET values for Wii Fit Plus categories were: yoga (2.1), balance (2.0), resistance (3.2), aerobic (3.4). Wii Sports averaged 3.0 METs.
• 67% of activities were light intensity (<3 METs), and 33% were moderate intensity (3.0-6.0 METs); none were vigorous.

Conclusions:

• A significant portion of motion-controlled video game activities provide light to moderate intensity exercise.
• Approximately one-third of the activities meet the criteria for moderate-intensity physical activity recommended by health organizations.
• These exergames can contribute to achieving daily physical activity targets.