title: Hemodynamic function during finger force production tasks in healthy adults.
abstract: Near-infrared spectroscopy (NIRS) is a noninvasive technique used to measure muscle hemodynamics. The focus of this study was to evaluate changes in muscle oxygenation during sustained maximal force production in young, healthy control individuals to establish baseline function in an ideal population.
  
  
  
  NIRS was used to monitor reduced hemoglobin (HbR) and oxygenated hemoglobin (HbO) in forearm muscles. Hemodynamic responses during force production tasks were monitored in real time.
  
  
  
  During handgrip exercises, maximal force production declined significantly. Increased HbR was found while HbO remained constant. The correlation between force production and HbO was positive (r = 0.18), while the correlation between force and HbR was negative (r = -0.48). The application of NIRS to monitor the correlation between force production and hemodynamic measures in the forearm was successful. These data set the foundation for future use of NIRS as a diagnostic tool for individuals with peripheral vascular disease: Muscle Nerve 56: 472-478, 2017.
authors.affiliation: Department of Engineering Technology, University of Houston, Houston, Texas, USA.|Abramson Center for the Future of Health, University of Houston, Houston, Texas, USA.
authors.forename: Luca
authors.initials: L
authors.lastname: Pollonini
authors.affiliation: Center for Neuromotor and Biomechanics Research, University of Houston, Houston, Texas, USA.
authors.forename: Lena
authors.initials: L
authors.lastname: Younes
authors.affiliation: Center for Neuromotor and Biomechanics Research, University of Houston, Houston, Texas, USA.|Department of Health and Human Performance, University of Houston, 3855 Holman Street, Garrison 104N, Houston, Texas, 77204-6015, USA.
authors.forename: Stacey L
authors.initials: SL
authors.lastname: Gorniak
mesh_terms: D000293:Adolescent; D005260:Female; D005385:Fingers / Q000502:physiology*; D018737:Hand Strength / Q000502:physiology*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D019265:Spectroscopy, Near-Infrared / Q000379:methods; D055815:Young Adult
keywords: finger; forearm; hand; hemodynamic function; muscle; near infrared spectroscopy