Carbon Sprinting Spiked-Shoes Trial

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

21 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-06-03

Study Completion Date

2023-08-06

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Objectives :

To determine intra and inter-subject sprinting performance modifications with trademarked Carbon-made spiked-Shoes (CS) compared to usual carbon-free ones (Standard spiked-Shoes-SS).

Methods :

Design. Multiple N-of-1 trial (Alternating Treatments Design), with block randomisation and double blind procedure. For each participants, sixteen repetitions of 30m-sprint are applied either with CS or SS, in random order for each repetition, during a 3h session a day. Blind procedures are reached by applying a dark sleeve cover on each shoes, and by separating raters from investigators.

Patients. Regional to National healthy sprinting athletes (750 IAAF/WA points), affiliated to the French Athletics Federation among the South Regional Athletic League (Comité du Var-FFA), are recruited as volunteers, with their own CS (from the same brand for homogeneity and generalisation concerns) and SS.

Main criteria. Time on a 30-meters sprint, with Force-Velocity Profiling (FVP) procedure, using Stalker Sport radar.

Secondary outcome measures. F0, V0, Vmax, Pmax , DRP and other standard FVP parameters, also measured with MySprint software; morphometric and cinematic data ; mean price difference between the two models.

Statistical analyses. A block randomisation model will be applied to check for the randoms size; variance analysis with a mixt linear model will be applied for group and confounding factors analysis. Student-T test and NAP will be applied for intra-individuals analysis.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Comparison of Trunk Muscle Performance Between Sprinters With and Without Hamstring Strain Injury History

NCT06089681

Hamstring Injury

COMPLETED

Effects of Foot Strengthening on the Incidence of Injuries in Long Distance Runners

NCT02306148

Leg Injuries

COMPLETED NA

Effect of an Unsupervised Multi-domain Intervention on Injury Risk Reduction in Athletics (I-ReductAI).

NCT06805162

Injury

ACTIVE_NOT_RECRUITING NA

Resisted Training in Runners

NCT06729138

Performance Enhancing

RECRUITING NA

Recovery Kinetics After Different Sprint Training Protocols (STRecovery)

NCT04766411

Sprint Training

COMPLETED NA

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Setting. The medical commission of the Var Athletics Committee (VAC), composed by medicine doctors, physiotherapists, universitary sport-scientists and FFA coaches, was in charge of the project, at Toulon conurbation and Draguignan, France.

Design. N-of-1 Trials is the usual term for randomized, double-blind SCEDs. This one has been designed as an Alternating Treatment Design (ATD), one of the four SCEDs types 25.

Due to the strict " on-off " intervention effect, no potential interference was expected between phases, and a " best treatment " final phase seems not necessary in the absence of carry-over or interaction effects. After discussion with coaches and athletes, the main constraint was to respect a single day " standard " short-sprint training session (i.e commonly 5 to 15 repetitions, up to 500m total volume). Respecting these conditions and the preference of athletes, ATD method seemed the more appropriate, allowing the most cycle comparisons in the same time span.

Procedure. For each participants, sixteen repetitions (2 sets of 8) of maximal 30m-sprint are applied, on the same track, either with " carbon super-spikes " (CS) or standard spikes (SS), in random order for each repetition, during a 3h total session a day. Repetitions are preceded by a full warm-up, and followed by a cool-down phase. Rest time between sets and repetitions is standardised (20 and 8-10 minutes).

Block starting can't be choosen in order to limit bias (reaction time, adjustment…) and to allow radar records at the pelvis height (1-m high), as recommended, so that a split-stance starting position was adopted, without any starter (" as soon as ready ").

A path is created between a " polling booth " zone, and the start- and finish lines. In this blinding zone, athletes are sitted on a wheelchair, blindfolded, and putted on with their shoes, which are already covered by dark socks allowing spikes free (athletes' visual blinding). Footwear management by the investigators avoid athletes to have tactile information (athletes'somesthesic blinding). Shoes can not be seen by raters (assessors' visual blinding) or other athletes in that zone. They are then driven to the start-line with the wheelchair, in order to limit gait sensation due to important differences in foams ± air-pods between CS and SS (athletes' proprioceptive blinding). This last point was added after athletes' contribution to the method.

At the start-line, they are asked for their belief between CS or SS, so that a " doubt " rate can be assessed to check for the blind paradigm. Then the blindfold is removed, and the subject stand-up in the starting position.

After the finish-line, a 20m deceleration zone is ended by a wheelchair, where athletes are blindfolded again, shoes tooken off and bringed back to the polling booth zone, as athletes enter the rest zone.

The wind is controlled with the official WA/FFA method and anemometer. The shoes weight is assessed, and standardised, when needed, with the addition of 20g ballasts glued at the heel, so that weight difference is decreased (\<50g).

Data are collected and examined by two assessors blinded from the randomisation list.

Subjects. Healthy ≥ 15 years-old athletes presenting with a 750 IAAF/World Athletics points level in sprinting (60-400m), and affiliated to the VAC, are screened with the SIFFA software (Système d'Information-FFA). Fourty-six athletes are eligible, and are contacted by email, as their coaches, for information letter. Due to homogeneity and generalisation concerns, they have to have their own or lended Nike Zoom Maxfly or Victory style. Twenty-five respond positively, and N=21 are availables for one of the half-day-proposed sessions and are included.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Sprint Performance Carbon Spiked-shoe Force-velocity Profile N of 1 Study Design

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Multiple N-of-1 Trial: within-subjects repetitive blinded randomized crossovers

Primary Study Purpose

OTHER

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Each participant is self-blinded, but also blinded to other participants ' alternative order

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Carbon sprinting Super-spikes

Trademarked Carbon Spiked-Shoes, from one Trademark only to ensure generalization concerns, is used alternatively with standard carbon-free spiked-shoes, for 8 repetitions of 30m-sprint each, separated by 10 minutes rest each.

Group Type EXPERIMENTAL

Carbon sprinting spiked-shoes

Intervention Type OTHER

Trademarked Carbon Spiked-Shoes, from one Trademark only to ensure generalization concerns, is used alternatively with standard carbon-free spiked-shoes, for 8 repetitions of 30m-sprint each, separated by 10 minutes rest each.

Standard sprinting carbon-free spiked-shoe

Group Type ACTIVE_COMPARATOR

Standard carbon-free sprinting spiked-shoes

Intervention Type OTHER

cf

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.