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International journal of exercise science
2023;16 (4): 885-897.

Carbon Fiber Insoles Enhance Perception of Performance Despite Variable Objective Outcomes: Specific to the Moderately Active Individual.

Erin E Dierickx, Cody R Butler, Robert A Huggins, Emma F Zuk, Lea C Mason, Lindsay J Distefano, Douglas J Casa
Author Information
  1. Erin E Dierickx: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  2. Cody R Butler: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  3. Robert A Huggins: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  4. Emma F Zuk: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  5. Lea C Mason: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  6. Lindsay J Distefano: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
  7. Douglas J Casa: Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
PMID: 37637238

Abstract

Carbon fiber insoles (CFIs) may benefit performance in elite athletes, however, their use in moderately active individuals has been adopted without evidence supporting such enhancements in this population. Fifteen male subjects performed vertical jump (VJ) and repeat treadmill sprint tests before and after a VO while wearing 1) CFIs and 2) control insoles (CON). Subjects completed a subjective survey regarding their perceived performance abilities for both conditions. There were no significant differences between CFIs and CON in VJ height, sprint distance, heart rate following sprints; and rate of oxygen consumption, perceived fatigue, and perceived exertion at 85% of maximal speed ( > 0.05) during the VO. At maximal speed, although there was no difference between conditions in peak rate of oxygen consumption (95%CI [-4.85, 0.21]) and respiratory exchange ratio (95%CI [-0.01, 0.03]), CFIs resulted in a reduced level of perceived fatigue (95%CI [-1, 0]) and perceived exertion (95%CI [-2, 0]) compared to CON. Subjects subjectively reported increased feelings of "" ( = 0.026) and being able to "" ( = 0.029) while wearing CFIs. Heightened perceptions of performance enhancements when wearing CFIs indicate, in the moderately active, perceptual benefits could be more influential for determining CFI use.

Keywords

VO2peak Vertical jump repeated treadmill sprint shoe insole subjective response

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