Strengthening Effect on Hamstring's Passive Mechanical Properties

Sports Physical Therapy Clinical Trial

Official title:

Effects Of Different Strengthening Methods On Hamstring Muscle Group's Passive Mechanical Properties in Healthy Individuals

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03884738
• Other study ID #: HacettepeSportsPhysio
• Status: Completed
• Phase: N/A
• Start date: March 21, 2019
• Est. completion date: December 1, 2019

Study information

• Verified date: April 2020
• Source: Hacettepe University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 42
• Est. completion date: December 1, 2019
• Est. primary completion date: December 1, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 30 Years

Eligibility

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)

Related Conditions & MeSH terms

• Sports Physical Therapy

Intervention

Other:
• Concentric Exercise
Leg Curl Machine: 1st week - 1st day is 10 maximum repeat test. 2nd week - 2 days of training - 2 sets of 6 repeats. %60 percent of maximum load. 3rd week - 3 days of training - 3 sets of 6-8 repeats. %60-80 of maximum load. 4th-8th week - 3 days of training - 3 sets of 8-12 repeats. when 3 sets of 12 achieved, load was increased with 2.5kg.
• Nordic Eccentric exercise
st week - 1 day - 2 sets of 5 repeats. nd week - 2 days - 2 sets of 6 repeats. rd week - 3 days - 3 sets of 6-8 repeats. th week - 3 days - 3 sets of 8-10 repeats. 5-8th weeks - 3 days - 3 sets of 12-8 repeats. When achieved 3 sets of 12 repeats with full range, speed was increased.
• Neuromuscular Electrical Stimulation
8 weeks, three times per week, 15 minutes of bilateral hamstring stimulation. 100 Hz. frequency, 600 microsecond duration rectangular current

Locations

Country	Name	City	State
Turkey	Hacettepe University	Ankara

Sponsors (1)

Lead Sponsor	Collaborator
Hacettepe University

Country where clinical trial is conducted

Turkey, 

References & Publications (6)

Amiri-Khorasani M, Sahebozamani M, Tabrizi KG, Yusof AB. Acute effect of different stretching methods on Illinois agility test in soccer players. J Strength Cond Res. 2010 Oct;24(10):2698-704. doi: 10.1519/JSC.0b013e3181bf049c. — View Citation

Ayala F, Sainz de Baranda P, De Ste Croix M, Santonja F. Reproducibility and criterion-related validity of the sit and reach test and toe touch test for estimating hamstring flexibility in recreationally active young adults. Phys Ther Sport. 2012 Nov;13(4):219-26. doi: 10.1016/j.ptsp.2011.11.001. Epub 2012 Jan 23. — View 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. — View Citation

Mentiplay BF, Perraton LG, Bower KJ, Adair B, Pua YH, Williams GP, McGaw R, Clark RA. Assessment of Lower Limb Muscle Strength and Power Using Hand-Held and Fixed Dynamometry: A Reliability and Validity Study. PLoS One. 2015 Oct 28;10(10):e0140822. doi: 10.1371/journal.pone.0140822. eCollection 2015. — View Citation

Mjølsnes R, Arnason A, Østhagen 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. — View Citation

Schwesig R, Koke A, Fischer D, Fieseler G, Jungermann P, Delank KS, Hermassi S. Validity and Reliability of the New Handball-Specific Complex Test. J Strength Cond Res. 2016 Feb;30(2):476-86. doi: 10.1519/JSC.0000000000001061. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Passive Mechanical Properties	Tone, Elasticity and Stiffness evaluation. Evaluated with Myotonometer-3	Change from baseline passive mechanical properties at 8 weeks
Secondary	Flexibility Measurement	Sit and reach test was used for hamstring flexibility	Change from baseline flexibility at 8 weeks
Secondary	Muscle Strength Measurement	Hamstring and Quadriceps strength were measured with LaFayette Manuel Muscle Tester	Change from baseline muscle strength at 8 weeks
Secondary	Agility Measurement	Illinois Agility Test was used for agility measurement	Change from baseline agility time at 8 weeks
Secondary	Anaerobic Explosive Power	Jump and Reach test was administered	Change from baseline anaerobic explosive power at 8 weeks
Secondary	Reaction Time	ruler drop test was used for reaction timing	Change from baseline reaction time at 8 weeks