Intramuscular Oxygenation and Muscle Activity of Extensor Carpi Radialis Brevis During Piano Performance: An...

Area of Science:

• Physiology
• Sports Medicine
• Music Performance Science

Background:

• Repetitive piano playing is linked to musculoskeletal disorders in pianists.
• The physiological mechanisms, particularly intramuscular oxygenation, are poorly understood.
• This study investigates the impact of piano repertoire variability on extensor carpi radialis brevis (ECRB) oxygenation.

Purpose of the Study:

• To examine the effect of playing piano repertoire on the intramuscular oxygenation of the ECRB.
• To explore the relationship between muscle oxygenation, electromyography (EMG) activity, and piano playing.
• To provide insights into the physiological underpinnings of playing-related musculoskeletal disorders (PRMDs) in pianists.

Main Methods:

• Observational study involving 13 conservatory piano students.
• Recorded surface EMG and intramuscular oxygenation (NIRS) of the left and right ECRB during 20 minutes of piano playing.
• Calculated relative changes in oxygenation compared to baseline resting values.

Main Results:

• Piano playing induced an average decline in oxygenated hemoglobin in both left (-7.48%) and right (-11.88%) ECRB muscles.
• Significant variability in oxygenation changes was observed, ranging from -15.53% to -2.00% (left) and -19.12% to -3.93% (right).
• EMG activity showed moderate negative correlations with oxygenated hemoglobin, suggesting a link between muscle effort and oxygen levels.

Conclusions:

• Piano performance leads to reduced oxygen supply in the ECRB, potentially contributing to PRMDs.
• Differences in oxygenation decline are influenced by the specific piano pieces played and EMG activity.
• Further research is recommended to investigate a 'dynamic index' incorporating piece characteristics and individual oxygenation patterns.