Healthy Adolescents
Conditions
Brief summary
This cross-sectional study aims to determine the test-retest reliability of surface electromyography (sEMG) outcomes in detecting levels of fatigue among healthy adolescents engaged in physical activities. It seeks to evaluate the consistency of sEMG parameters across two test sessions and correlate these measurements with both performance metrics and subjective fatigue assessments. Participants will perform repetitive squatting until volitional exhaustion while their muscular activity is recorded. They will do so on two different test sessions with an interval of one week in between.
Interventions
DIAGNOSTIC_TESTSurface Electromyography
The primary lower limb muscles to be monitored include the gluteus medius, rectus femoris, vastus lateralis (quadriceps ), biceps femoris (hamstrings), tibialis anterior, and gastrocnemius medialis (calves). This setup fully utilizes a 16-channel sEMG system by monitoring each muscle group bilaterally to capture comprehensive data on muscle activity and fatigue.
Sponsors
Universiteit Antwerpen
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
13 Years to 19 Years
Healthy volunteers
Yes
Inclusion criteria
* engage in regular physical activity, such as sports or dance
Exclusion criteria
* neuromuscular disorders * conditions that affect muscle function
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| sEMG median power frequency (MPF) - test | first test session at day 1 | A parameter used to analyze the frequency content of the electrical signals generated by muscle activity. Changes in the MPF can indicate alterations in muscle fiber recruitment and metabolic changes during sustained muscle contractions |
| sEMG RMS amplitude - retest | second test session after 1 week | A single value that represents the magnitude of the sEMG signal over a specified period of time, higher RMS values indicate greater muscle activation. |
| sEMG RMS amplitude - test | first test session at day 1 | A single value that represents the magnitude of the sEMG signal over a specified period of time, higher RMS values indicate greater muscle activation. |
| sEMG median power frequency - retest | second test session after 1 week | A parameter used to analyze the frequency content of the electrical signals generated by muscle activity. Changes in the MPF can indicate alterations in muscle fiber recruitment and metabolic changes during sustained muscle contractions |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| VAS score - test | first test session at day 1 | subjective fatigue score |
| VAS score - retest | second session after 1 week | subjective fatigue score |
Other
| Measure | Time frame | Description |
|---|---|---|
| Weight | first test session at day 1 | body weight in kilograms |
| Leg length | first test session at day 1 | Length measured from trochanter major to the ground in centimeters |
| Height | first test session at day 1 | body height in centimeters |
| Gender | first session | male/female/other |
| Age | first test session at day 1 | age in years |
| Physical Activity | first test session at day 1 | PAQ-A (physical activity questionaire for adolescents): a self-administered, 7-day recall instrument. It was developed to assess general levels of physical activity for high school students in grades 9 to 12 and approximately 14 to 19 years of age. |
Countries
Belgium
Contacts
Primary ContactAnn Hallemans, Associate Professor, PhD
Outcome results
None listed