Children have less variable postures and muscle activities when using new electronic information technology compared...

Area of Science:

• Pediatrics
• Ergonomics
• Human-Computer Interaction

Background:

• Children's increasing exposure to new information technologies (IT) raises concerns about potential musculoskeletal stresses.
• Limited data exists on children's postures and muscle activity during reading and writing tasks with IT.

Purpose of the Study:

• To investigate and compare spinal and upper limb postures and muscle activity in children using new IT (computers) versus traditional methods (books/pen).
• To assess the impact of display height on posture and muscle activity variation during IT use.

Main Methods:

• Twenty-four children (10-12 years old) performed reading and writing tasks using computers and traditional materials.
• Three-dimensional posture and muscle activity were recorded and analyzed for mean values and variation.

Main Results:

• Computer use resulted in more neutral mean postures and lower mean muscle activity compared to traditional methods.
• IT use led to less variable, more monotonous postures and muscle activity.
• Minor variations in computer display height showed minimal effect on posture and muscle activity variation.

Conclusions:

• While computers offer more neutral postures and lower muscle activity, the monotony of posture and muscle activity during IT use is a concern.
• Children should be encouraged to incorporate task variety when using IT to mitigate risks associated with monotonous musculoskeletal stress.