The Effect of NHE and KT on the Hamstring Strength and Sprint Performance in Collegiate Sprinters

Study Overview
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Brief Summary
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The invesitgators performed a randomized controlled trial on collegiate sprinters to explore the combined effect of the NHE and KT and randomly allocated the subjects into the experimental (NHE+KT) or control (NHE) group by an independent researcher using the sealed envelopes method. To calculate the sample size, a Cohen's d effect size of 0.4, an alpha level of 0.05, a test power of 0.95 were configured to G*Power software, at least 34 samples were computed. Considering the dropouts, 40 male collegiate sprinters were enrolled, explained the procedures of this study and voluntarily written informed consent. Inclusion criteria was that participants must be male, aged 18 years or older, training at the university level at least 4 times per week, with no history of lower limb injury within the last 6 months and no previous experience of the NHE or KT. Participants who had lower limb mobility limitation or injury especially HSI within 6 months and associated musculoskeletal, respiratory or cardiovascular diseases and was allergic to kinesio tape were excluded.

Official Title
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The Effect of the Nordic Hamstring Exercise and Kinesio Taping on the Hamstring Strength and Sprint Performance in Collegiate Sprinters

Conditions
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Hamstring Injury

Intervention / Treatment
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* Other: NHE+KT
* Other: NHE


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants must be male, aged 18 years or older, training at the university level at least 4 times per week, with no history of lower limb injury within the last 6 months and no previous experience of the NHE or KT. Exclusion Criteria: Participants who had lower limb mobility limitation or injury especially HSI within 6 months and associated musculoskeletal, respiratory or cardiovascular diseases and was allergic to kinesio tape were excluded.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 25 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: NHE+KT<br>the Nodic hamstring exercise plus the kinesio taping with tension during 4-week consisting 12 sessions | Other: NHE+KT<br>* the Nodic hamstring exercise plus the kinesio taping with tension during 4-week consisting 12 sessions<br>|
| Sham Comparator: NHE<br>the Nordic hamstring exercise plus taping wihout tension during 4-week consisting 12 sessions | Other: NHE<br>* the Nodic hamstring exercise plus the kinesio taping without tension during 4-week consisting 12 sessions<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| isokinetic hamstring eccentric peak torque | eccentric peak torque measured by Cybex | 4-week | 
| 30m sprint performance | 30m sprint time | 4-week | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Hecc/Qcon Ratio | hamstring eccentric peak torque/Quadriceps concentric peak torque | 4-week |