Associations Between Low Frequency Fatigue, Jump Height and Perceptual Measures of Muscle Soreness, Fatigue and Recovery

NCT06458166 | Recruiting

• 1 other identifier: ST_S_
• Study Type: observational
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

Over the recent years, the increased competitive demands in elite competitive athletes has sparked a heightened interest in monitoring fatigue. Given the nature of the soccer game, athletes may experience low-frequency fatigue. Until recently, this assessment was restricted to in-lab. However, the emergence of new instruments aiming to allow low-frequency assessment to be carried out on a daily basis, in the context of professional teams. This study aimed to analyze the recovery of low-frequency fatigue, jump height and perceptual responses following competition and investigate possible associations between the objective and subjective parameters.

Conditions

Fatigue; Physical Exercise

Keywords

sports; soccer; low frequency fatigue

Outcome Measures

Primary Outcomes (1)

• Differences in Low frequency fatigue measured using Myocene (eletrical stimulus and force measurement)

  Assessment using myocene. Muscles are stimulated with low-frequency electrical pulses. The response of the muscle (force or torque) output, is recorded. A decrease in force output compared to baseline levels indicates fatigue.

  2 hours before the match; 30 minutes following the match, 24 hours following the match; 48 hours following the match

Interventions

Assessment of low frequency fatigue using low frequency eletrical stimulation OTHER

Pre-programmed muscle electrical stimuli will be applied via Myocene® software using 3 electrodes: 1 cathode (5 x 10 cm) placed transversely over the proximal quadriceps femoris, and 2 anodes (5 x 5 cm) over the distal vastus medialis and vastus lateralis. Sixteen sets of stimuli will be administered with 5 seconds between sets. Each set consists of a single pulse, a train of 5 stimuli at 20 Hz, and a train of 18 stimuli at 120 Hz, with 1-second intervals between. The stimulation intensity starts at 25 mA and increases by 1 mA per set, reaching 40 mA in the final set. The Myocene® software calculates the ratio of low- to high-frequency evoked forces within each set. The outcome (Powerdex) is the median value of these 16 ratios for each leg. This evaluation will be conducted on both legs, taking 2 minutes per leg.

Eligibility Criteria

• Age: 16 Years - 21 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Players at the highest division of the portuguese national championships in their respective age group.

You may qualify if:

• Elite level youth soccer players, competing in the highest portuguese division

You may not qualify if:

• Older adults
• none elite soccer player
• Play less than 70 minutes of match

Sponsors & Collaborators

• University of Maia: lead

Study Sites (1)

University of Maia

Maia, Porto District, Portugal

RECRUITING

MeSH Terms

Conditions

Fatigue; Motor Activity

Condition Hierarchy (Ancestors)

Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Behavior

Central Study Contacts

Filipe Maia

CONTACT

22 986 6000; FMAIA.dcd@umaia.pt

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: June 1, 2024
• First Posted: June 13, 2024
• Study Start: July 1, 2024
• Primary Completion: August 21, 2024
• Study Completion: September 30, 2024
• Last Updated: June 13, 2024

Record last verified: 2024-06

Locations

PT (1)