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Related Experiment Video

Updated: Jun 9, 2025

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Muscle Oxygen Saturation Dynamics During Upper-Body Resistance Exercise.

Adam M Gonzalez1, Gerald T Mangine2, Anthony G Pinzone3

  • 1Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA.

Sensors (Basel, Switzerland)
|October 26, 2024
PubMed
Summary
This summary is machine-generated.

Muscle oxygen saturation (SmO2) dynamics during resistance exercise showed slight declines in re-saturation rate and peak values across sets. Body mass and blood pressure influenced these muscle oxygenation responses.

Keywords:
SmO2bench pressmuscle oxygen re-saturationmuscle oxygenationnear-infrared spectroscopy

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biomedical Engineering

Background:

  • Limited research exists on muscle oxygen saturation changes during multiple sets of resistance exercise.
  • Understanding these dynamics is crucial for optimizing training protocols and performance.

Purpose of the Study:

  • To investigate muscle oxygenation parameters during upper-body resistance exercise.
  • To examine how participant characteristics influence resistance training performance and muscle oxygen saturation dynamics.

Main Methods:

  • Sixty-one recreationally trained men and women performed 5 sets of barbell bench presses at 75% of their one-repetition maximum.
  • Muscle oxygen saturation (SmO2) in the anterior deltoid was monitored using near-infrared spectroscopy.
  • Muscle oxygen saturation change (∆%SmO2), re-saturation rate (SmO2RecSlope), and peak recovery values (SmO2Peak) were analyzed across sets.

Main Results:

  • No significant differences in ∆%SmO2 were observed across the five sets.
  • A decline in SmO2RecSlope was noted on sets 4 and 5 compared to set 1.
  • SmO2Peak was lowest on set 5 compared to all other sets.
  • Body mass, diastolic blood pressure, and mean arterial pressure were identified as significant covariates influencing ∆%SmO2.

Conclusions:

  • Muscle oxygen saturation dynamics show minimal changes across sets without covariates.
  • A decrease in muscle oxygen re-saturation and peak values occurs in later sets.
  • Factors like body mass and blood pressure can modulate muscle oxygenation responses during resistance exercise.