CClinicalTrials.gg
RecruitingNCT07589231Updated May 15, 2026

Effects of Carbon Fiber Insoles on CMJ and Sprint Performance

An interventional study of VKTRY Insoles in Healthy, Sportsman and Prevention, sponsored by Benjamín Cuenca Valero. Recruiting at 1 site in Spain. Open to male participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-15.

Sponsored by Benjamín Cuenca Valero · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Jun 2026, 3 months ago, but the record still lists the study as recruiting.
  • Started Oct 2025; still recruiting 11 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
38
Allocation
Randomized
Ages
18 Years to 30 Years
Sex
Male
01

Study summary

This study evaluates the effects of VKTRY carbon fiber insoles on vertical jump and sprint performance in moderately active men. Participants will perform tests with and without insoles, assessing both objective performance and subjective perception using a Likert-type scale.

Read the detailed description

This study aims to analyze the effects of using carbon fiber insoles (VKTRY) on physical performance in explosive tasks, specifically vertical jump (countermovement jump - CMJ) and sprinting, in moderately active young adults. The increasing use of ergonomic technologies in sports has sparked interest in devices such as these insoles, which promise to increase mechanical efficiency and propulsion during athletic movements, thanks to the rigidity and energy return capacity of carbon fiber.

Study Design: The study design is descriptive, observational, cross-sectional, and comparative. The sample will consist of men aged 18 to 30 years with regular sports participation (2-4 days per week). Each participant will perform vertical jump and sprint tests under two conditions: with and without carbon fiber insoles.

Measured Variables: The variables evaluated will include jump height (cm), flight time (ms), sprint time (s), maximum speed (km/h), and subjective perception via an adapted Likert-type survey. Objective evaluation will be conducted using the validated My Jump Lab application.

Expected Implications: The study seeks to determine whether these insoles significantly influence immediate sports performance, both in terms of physical parameters and athletes' perception. Results could have practical implications for training, injury prevention, and the use of ergonomic aids in amateur athletes.

02

Conditions studied

  • Healthy
  • Sportsman
  • Prevention
  • Performance
  • Healthy Adult Man
  • Sports Performance
  • Athletic Performance and Injury Risk

Keywords

  • sprint
  • insoles
  • carbon fiber insoles
  • vertical jump
  • biomechanics
  • sports performance
  • my jump lab
03

In context

Lead sponsor

Benjamín Cuenca Valero is the lead sponsor of 2 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 30 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Inclusion criteria

  • Men aged 18-30 years
  • Moderate physical activity (2-4 times/week)
  • No injuries in the last 6 months

Exclusion criteria

Exclusion Criteria:

  • Use of orthoses or podiatric pathologies
  • Neurological or cardiovascular disease
  • Refusal to sign informed consent
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
38 participants (estimated)

Study arms

  • Experimental
    With insoles

    Use of VKTRY insoles during CMJ and sprint

    Device: VKTRY Insoles

  • No intervention
    Without insoles

    CMJ and sprint without VKTRY insoles

Interventions

  • DeviceVKTRY Insoles

    Carbon fiber insoles (VKTRY)

06

What researchers measure

Primary outcomes

  1. Jump height difference (CMJ)

    Measurement with the My Jump Lab app

    Time frame: Day 1

Secondary outcomes

  1. Flight time (ms)

    Time frame: Day 1

  2. Sprint time (s)

    Time frame: Day 1

  3. Maximum speed (km/h)

    Time frame: Day 1

  4. Subjective assessment on Likert scale

    Time frame: Day 1

07

Study locations

1 of 1 sites recruiting
  • Universidad Católica de Valencia
    Valencia, Valencia 46001, Spain
    Recruiting
08

References and documents

Publications

  • Dierickx EE, Butler CR, Huggins RA, Zuk EF, Mason LC, Distefano LJ, Casa DJ. Carbon Fiber Insoles Enhance Perception of Performance Despite Variable Objective Outcomes: Specific to the Moderately Active Individual. Int J Exerc Sci. 2023 Jul 1;16(4):885-897. doi: 10.70252/EGDU7320. eCollection 2023. PubMed 37637238 ↗
  • Tokutake G, Kuramochi R, Murata Y, Enoki S, Koto Y, Shimizu T. The Risk Factors of Hamstring Strain Injury Induced by High-Speed Running. J Sports Sci Med. 2018 Nov 20;17(4):650-655. eCollection 2018 Dec. PubMed 30479534 ↗

Individual participant data

Plan to share: Yes — All underlying IPDs result in a publication

Supporting information: Study protocol, Sap, Icf, Csr, Analytic code

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 15, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07589231
Lead sponsor
Benjamín Cuenca Valero
Responsible party
Benjamín Cuenca Valero (Doctor, Fundación Universidad Católica de Valencia San Vicente Mártir) — Sponsor-investigator
First posted
May 15, 2026
Start date
Oct 30, 2025
Primary completion
Jun 15, 2026 (estimated)
Completion
Jun 30, 2026 (estimated)
Last update
May 15, 2026

Study contacts

Benjamín Cuenca Valero
Contact
benjamin.cuenca@ucv.es
+34636695885
David Cárcel Martínez
Contact
dacarmar@mail.ucv.es
+34601315992
Benjamín Cuenca Valero
study director · Universidad Católica de Valencia (UCV) Facultad de Medicina y Ciencias de la Salud. C/ Quevedo, 2 - 46001 Valencia
David Cárcel Martínez
principal investigator · Universidad Católica de Valencia (UCV) Facultad de Medicina y Ciencias de la Salud. C/ Quevedo, 2 - 46001 Valencia

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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