Clinical trial NCT03884738: Strengthening Effect on Hamstring's Passive Mechanical Properties
Official title: Effects Of Different Strengthening Methods On Hamstring Muscle Group's Passive Mechanical Properties in Healthy Individuals
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Sports Physical Therapy
Keywords: Muscle Tonus
Elasticity
Electric Stimulation Therapy
Physical Conditioning, Human
Lead sponsor: Hacettepe University
Sponsor class: OTHER
First posted: 2019-03-21
Enrollment: 42
Sex: MALE
Minimum age (years): 18
Maximum age (years): 30
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: randomization into three groups and measurement before and after intervention
Primary purpose: BASIC_SCIENCE

Brief summary: The purpose of this study was to investigate effects of different strengthening methods on hamstring muscle group's passive mechanical properties and to investigate this effect's relation with performance changes in healthy individuals. 42 healthy sedentary male participated in this study. Passive mechanical properties and strength of hamstring and quadriceps muscles, flexibility of hamstring muscles, anaerobic explosive strength, reaction time, agility were measured. Participants randomized evenly into one of three groups; eccentric, concentric and neuromuscular electrical stimulation (NMES). After 8 weeks training period, participants were measured again.


Eligibility criteria: Inclusion Criteria:

* being sedentary

Exclusion Criteria:

* Having knee, hip and/or back pain
* Having a cardiovascular condition/disease
* History of previous knee and/or hip surgery
* Having a diagnose of any systemic disease
* History of previous hamstring injury
* Being physically active within last year ( Regular activity at least 3 days a week and continuity of at least 2 months was accepted as being physically active)

Primary outcomes:
measure: Passive Mechanical Properties
timeFrame: Change from baseline passive mechanical properties at 8 weeks
Secondary outcomes:
measure: Flexibility Measurement
timeFrame: Change from baseline flexibility at 8 weeks
measure: Muscle Strength Measurement
timeFrame: Change from baseline muscle strength at 8 weeks
measure: Agility Measurement
timeFrame: Change from baseline agility time at 8 weeks
measure: Anaerobic Explosive Power
timeFrame: Change from baseline anaerobic explosive power at 8 weeks
measure: Reaction Time
timeFrame: Change from baseline reaction time at 8 weeks
Other outcomes:
Locations:
city: Ankara
country: Turkey
facility: Hacettepe University
Study officials:
affiliation: Hacettepe University
name: tuzun fırat, Assoc. Prof.
role: STUDY_DIRECTOR
References:
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citation: Mjolsnes R, Arnason A, Osthagen T, Raastad T, Bahr R. A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players. Scand J Med Sci Sports. 2004 Oct;14(5):311-7. doi: 10.1046/j.1600-0838.2003.367.x.
citation: Glaviano NR, Langston WT, Hart JM, Saliba S. Influence of patterned electrical neuromuscular stimulation on quadriceps activation in individuals with knee joint injury. Int J Sports Phys Ther. 2014 Dec;9(7):915-23.