Clinical trial NCT04002206: Comparison of Muscle Energy Technique vs Static Stretch in Vertical Jump of Basketball and Volleyball Player
Official title: Immediate Effects of Post-isometric Relaxation and Static Stretching on Quadriceps Muscle During Vertical Jump in Volley Ball and Basketball Players
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Healthy
Keywords: Muscle Energy Technique
Post isometric relaxation technique.
Lead sponsor: Riphah International University
Sponsor class: OTHER
First posted: 2019-06-28
Enrollment: 29
Sex: MALE
Minimum age (years): 18
Maximum age (years): 35
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SUPPORTIVE_CARE

Brief summary: A randomized control trial study was conducted in Islamic International University Islamabad from 1st August 2017 to 31st January 2018 according to the set criteria. A total number of 29 athletes age between 18-35 and playing as part time/ domestic level included in this study. Data were divided into experimental group (n=15) and control group (n=14) by random sampling technique. Post isometric relaxation technique was used in experimental group and static stretching was given in control group. Baseline reading was taken before intervention and post intervention reading taken immediately after application of intervention. Data analyzed through SPSS 20.

Detailed description: Vertical jump is defined as the ability of athlete to elevate off the ground from standstill.There are two types of vertical jump which re squat vertical jump and vertical stop jump. There was a strong correlation between maximal strength in half squats and sprint performance and jumping height.

Muscle energy technique(METS) is the procedure which involves voluntary contraction of muscle in specific direction with different angles against a counterforce applied by clincian.METS is used to enhance strength of group of muscle, increase afferent input to facilitate reflexive stabilization and increase endurance in coordinated movement patterns.

Athletes perform dynamic stretching before sports involvement. Study shows that three 30 seconds stretch enhance muscle length immediatley after stretching.

A study conducted in 2003 to see the effects of muscle energy technique on hamstring extensibility, the conclusion of this study that muscle energy technique produced an immediate increase in passive knee extension.

A study conducted on immediate effect of two muscle energy techniques on quadriceps muscle during vertical jump. The study suggests concentric muscle energy technique on quadriceps muscle is the most appropriate technique to potentiate height jump performance and stretch-shorten cycle function in counter-movement jump.

Athletes ususully perfrom stretching exercises in warm up before involvement to sports.Study suggest that dynamic stretching is more suitable for use as part of warmup in young athletes. Athletes invlve in high intensity exercise demand stretch shorten cycle, stretching may be important for injury prevention. Stretching also reduce the peak torque and mean power output.

Eligibility criteria: Inclusion Criteria:

* Athletes (volley ball and basketball players) playing at part time/domestic level.
* Athletes age between 18-35 Years.

Exclusion Criteria:

* Athletes having history of sprain or strain in lower limbs within last 6 months.
* Athletes having any neuro-musculoskeletal, cardiovascular pathology

Primary outcomes:
measure: Vertical Jump - Force Plates
timeFrame: Day 1
measure: Muscle Recruitment: through Electromyography
timeFrame: Day 1
measure: 30 Meter sprint
timeFrame: Day 1
measure: Ground Reaction force (flight time):- through Force plates
timeFrame: Day 1
Secondary outcomes:
Other outcomes:
Locations:
city: Islamabad
country: Pakistan
facility: Riphah International University
state: Federal
Study officials:
affiliation: Riphah International University Islamabad
name: Imran Amjad, PHD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Wisloff U, Castagna C, Helgerud J, Jones R, Hoff J. Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players. Br J Sports Med. 2004 Jun;38(3):285-8. doi: 10.1136/bjsm.2002.002071.
citation: de Weijer VC, Gorniak GC, Shamus E. The effect of static stretch and warm-up exercise on hamstring length over the course of 24 hours. J Orthop Sports Phys Ther. 2003 Dec;33(12):727-33. doi: 10.2519/jospt.2003.33.12.727.
citation: Ballantyne F, Fryer G, McLaughlin P. The effect of muscle energy technique on hamstring extensibility: the mechanism of altered flexibility. Journal of Osteopathic Medicine. 2003 Oct 1;6(2):59-63
citation: 4. Gentil-Bécoz J, Royal S, Locatelli M, Perez GM. The immediate effects of two muscle energy techniques on quadriceps muscle during vertical jumps: A pilot Study. Journal of Bodywork and Movement Therapies. 2015 Oct 1;19(4):672-3
citation: Carvalho FL, Carvalho MC, Simao R, Gomes TM, Costa PB, Neto LB, Carvalho RL, Dantas EH. Acute effects of a warm-up including active, passive, and dynamic stretching on vertical jump performance. J Strength Cond Res. 2012 Sep;26(9):2447-52. doi: 10.1519/JSC.0b013e31823f2b36.
citation: Witvrouw E, Mahieu N, Danneels L, McNair P. Stretching and injury prevention: an obscure relationship. Sports Med. 2004;34(7):443-9. doi: 10.2165/00007256-200434070-00003.
citation: Cramer JT, Housh TJ, Weir JP, Johnson GO, Coburn JW, Beck TW. The acute effects of static stretching on peak torque, mean power output, electromyography, and mechanomyography. Eur J Appl Physiol. 2005 Mar;93(5-6):530-9. doi: 10.1007/s00421-004-1199-x. Epub 2004 Dec 15.