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Exploring the effects of L-carnitine supplementation on CrossFit® performance

The effects of acute L-carnitine supplementation on CrossFit® performance: a randomized, double-blind, placebo-controlled crossover study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN14089170
Enrollment
20
Registered
2025-01-29
Start date
2023-11-27
Completion date
Unknown
Last updated
2025-03-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

The acute effects of L-carnitine supplementation on exercise performance in recreational CrossFit® practitioners Other

Interventions

In this randomized, double-blind, placebo-controlled crossover study, a free online randomisation tool (randomiser.org) was used to assign CrossFit practitioners to groups. They participated in two wo

Sponsors

Universidad Nacional Autónoma de México
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1. Trained adult males aged 18-35 years old 2. A minimum of six months of CrossFit® experience 3. Required to have previously completed the “Cindy” workout routine

Exclusion criteria

Exclusion criteria: 1. Diagnosed illnesses 2. Smoking 3. Recent use of medications or supplements (within the last three months) 4. Family history of seizures 5. Musculoskeletal injuries

Design outcomes

Primary

MeasureTime frame
Exercise performance was measured using the total number of repetitions completed during the "Cindy" workout, a high-intensity CrossFit® protocol immediately after the workout in each session

Secondary

MeasureTime frame
1. Ratings of Perceived Exertion (RPE) were measured using a standard Borg scale at the end of the workout 2. Blood Pressure (BP) was measured using a standard sphygmomanometer before and after the workout session 3. Gastrointestinal issues were measured using participant self-reporting at the end of the workout

Countries

Mexico

Contacts

Public ContactAsli Devrim Lanpir
aslidevrimlanpir@gmail.com+353 (1) 700 5000

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026