The Effect of Fatigue on Static and Dynamic Balance in Healthy Young Male Athletes

Participants were randomized into control and experimental groups. They were examined on static and dynamic balance (pre- & post-tests). Then, the experimental group went through a fatigue protocol, in which speed and incline increase one unit each minute passing, and stopped when rate of perceived exertion level reached ≥ 18, and the plasma lactate level differed from the baseline by ≥ 4mmol/L.

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Key information

Conditions

Fatigue Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–24 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Kuwait University

Safat, 13060, Kuwait

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

male and aged between 18-24 years old,
physically active (i.e. exercised ≥ 3 times weekly during the past three months).

Exclusion criteria

reported a minor injury in the past two months,
major injury in the past 12 months, and/or underwent a major primary surgery in their lower limb.

Treatment and study plan

Running Fatigue Protocol

Behavioral

The experimental group went through a fatigue protocol, in which speed and incline increase one unit each minute passing, and stopped when rate of perceived exertion level reached ≥ 18, and the plasma lactate level differed from the baseline by ≥ 4mmol/L.

Primary outcomes

Dynamic Balance

Time frame: Baseline and immediately after the protocol

Dynamic postural balance was measured using Y-balance (YB). A test designed to examine the ability to maintain postural stability in dynamic conditions. In this test, participants would single-leg stand on a block (start with left) and were instructed to push another block with their other leg as far as they can without losing their balance (i.e. placing their leg on the ground), while having their hands on their hips. The free blocks are placed anteriorly and posterolaterally of the participant in both directions, creating a Y shape with the stable block on the intersection of these lines. Distance reached was recorded for each direction. The directions of the test were anterior, posteromedial, posterolateral (pushing on the contralateral side). Then, the participants were asked to switch their feet and preform the task again; six trials in total were recorded to minimize learning effect.
Static balance

Time frame: Baseline and immediately after the protocol

Static balance (SB) testing was performed using virtual reality interactive gaming system (Wii balance board (WBB) [Nintendo, Kyoto, Japan]). The WBB contains four strain gauge-based load sensors, qualified to obtain center of pressure movement, which makes it valid and reliable to measure posture stability5. The participants were asked to perform stand quietly with their hand on their sides with both legs with equal weight-bearing and on a single-leg stance on the right leg, then on the left leg. All postures were performed under two conditions: open eyes and closed eyes.

Sponsors and collaborators

Lead sponsor

Kuwait University

Other

Registry information

Important dates

Study start: 2022
Primary completion: 2023
Study completion: 2023
First posted: Mar 28, 2025
Registry last updated: Mar 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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