Clinical trial NCT06089681: Comparison of Trunk Muscle Performance Between Sprinters With and Without Hamstring Strain Injury History
Official title: Comparison of Trunk Muscle Activity, Muscle Strength, Muscle Endurance Between Sprinters With and Without Hamstring Strain Injury History
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Hamstring Injury
Keywords: Hamstring Strain Injury
Trunk Muscle Performance
Hip Muscle Performance
Sprinter
Lead sponsor: National Yang Ming Chiao Tung University
Sponsor class: OTHER
First posted: 2023-10-18
Enrollment: 32
Sex: ALL
Minimum age (years): 16
Maximum age (years): 30
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: * Age between 16 to 30 years old
* Sprinters who specialize in 100, 200, 400 meters, or 100, 400 metres hurdles
* Participates in sprint training ≥ three times a week
* Without any pain when participation in sporting activity

Brief summary: The aim of this study is to:

1. Compare trunk muscle performance between sprinters with and without HSI history
2. Investigate whether running speed influences the differences on trunk muscle activity between these two groups

Detailed description: Hamstring strain injury is one of the most common injuries in the lower extremities. As running speed increases, the force and load on the hamstring muscles significantly increase, thereby increasing the risk of injury. Trunk muscles are connected thigh muscles through the pelvis, and poor trunk muscle capacity of maintaining stability affect the muscle length of the lower limbs during movement, reducing their contractile tension and increasing the risk of injury. Earlier literature also indicated that poor trunk muscle performance is related to the occurrence of lower extremity sport injuries. However, literature on the relationship between trunk muscle performance and hamstring strain injury is scarce. Testing methods of existing research have failed to fully reflect the actual circumstances of sprinting. Moreover, previous studies have predominantly focused on soccer players. However, the running mechanics of soccer player and sprinter are slightly different. Currently, there is lack of research investigate the relationship between trunk muscle performance and hamstring strain injury in sprinters.Therefore, the aim of this study is to: (1) Compare trunk muscle performance between sprinters with and without HSI history, (2) nvestigate whether running speed influences the differences on trunk muscle activity between these two groups

Eligibility criteria: Inclusion Criteria of HSI history group:

* Have ≥ twice hamstring strain injury occurrence in the past year

Inclusion Criteria of control group:

* Without any hamstring strain injury occurrence in the past year
* Match gender, age, BMI, dominant side, training experience, training frequency, Personal best record in 100m with HSI history group

Exclusion Criteria of all subjects:

* Neurological, cardiorespiratory or systemic disorder
* Have low back pain history in the past year
* Scoliosis
* Sacroiliac joint dysfunction
* Complaints of pain on trunk \& lower extremity
* Leg length difference \> 2cm
* History of lower extremity surgery

Primary outcomes:
measure: Surface electromyography (Noraxon TeleMyo sEMG System, Noraxon USA Inc, Scottdale, Ariz)
timeFrame: Immediately during the experiment
measure: Isometric trunk flexor muscle strength (Pro 4, Biodex Medical Systems, Inc., Shirley, NY, United States)
timeFrame: Immediately during the experiment
measure: Isometric trunk extensor muscle strength (Pro 4, Biodex Medical Systems, Inc., Shirley, NY, United States)
timeFrame: Immediately during the experiment
measure: Isometric trunk rotator muscle strength (microFET®2 Digital Handheld Dynamometer)
timeFrame: Immediately during the experiment
measure: Trunk flexor muscle endurance
timeFrame: Immediately during the experiment
measure: Trunk extensor muscle endurance
timeFrame: Immediately during the experiment
measure: Trunk lateral flexor muscle endurance
timeFrame: Immediately during the experiment
Secondary outcomes:
Other outcomes:
measure: Isokinetic lower extremity muscle strength ratio (Pro 4, Biodex Medical Systems, Inc., Shirley, NY, United States)
timeFrame: Immediately during the experiment
measure: Hamstring flexibility
timeFrame: Immediately during the experiment
Locations:
city: Taipei
country: Taiwan
facility: National Yang Ming Chiao Tung University
state: Beitou
Study officials:
References: