Jump-specific mechanical load and perceived exertion during collegiate dance training

Area of Science:

• Sports Science
• Dance Biomechanics
• Occupational Health

Background:

• Jumping is a key element in collegiate dance, contributing significantly to mechanical loading.
• Objective, style-specific measures of training load in dance are not well-defined.
• Understanding jump-related loads is crucial for managing training and preventing injuries.

Purpose of the Study:

• To examine jump-related external and internal training loads during real-world ballet and modern dance classes.
• To evaluate jump landing impact, jump height, and perceived exertion as indicators of training load.
• To identify style-specific differences in training load between ballet and modern dance.

Main Methods:

• Eighteen female collegiate dancers wore waist-mounted inertial measurement units (IMUs) during standardized ballet and modern dance classes.
• Jump landing impact and jump height were measured for various jump types.
• Session rating of perceived exertion (sRPE) was collected after each dance segment.

Main Results:

• Jump landing impact and jump height showed good-to-excellent reliability for monitoring external mechanical load.
• Most jump metrics were stable, but some jumps showed day-to-day variations.
• Modern dance resulted in significantly higher landing impacts, jump heights, and sRPE compared to ballet.
• Perceived exertion (sRPE) did not significantly correlate with jump metrics, indicating a dissociation between external and internal loads.

Conclusions:

• Jump-specific, style-specific mechanical metrics are valuable for monitoring external training load in collegiate dance.
• Perceived exertion alone may not accurately reflect the mechanical demands of jumping in dance.
• Wearable IMUs offer a practical method for assessing training load in real-world dance settings, aiding in training management and injury risk reduction.