HealthyNCT03133078
Impact of Fatigue on Jumping Performance
A study testing Step-Down Test (2 min) and Side hop test (30 s) in people with Healthy, run by Creighton University at 1 site in United States.
Trial summary
The purpose of this study will be to determine the effects of a 2-minute single limb lateral step-down fatigue test versus a 30 second side hop test on single limb forward hop distance. Read more about this study
- Who is it for?
- Ages 19 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- Step-Down Test (2 min) and Side hop test (30 s)
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteUnited States
- Study dates
- Nov 2016to Apr 2017
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 19 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- No history of knee surgery
- Tegner score >5
Who cannot join
- Participants with traumatic spine or lower extremity injury within past 6 months
- Participants who are unable to give consent or are unable to understand procedures of experiment
Trial locations and contacts
1 site in 1 country.
About this study
The purpose of this study will be to determine the effects of a 2-minute single limb lateral step-down fatigue test versus a 30 second side hop test on single limb forward hop distance.
Read the detailed description
Current methods to induce fatigue often incorporate equipment not available in all clinical settings or include tasks that are difficult to standardize. One of the tests to fatigue the leg muscles is the leg extensor fatigue test using a unilateral weight machine. There are drawbacks to this testing including the clinician having access to the equipment, testing only fatigued a single muscle group, and it is less sport/task specific compared to jump testing. Our previous work has incorporated the use of a side hop task that is performed by hopping over two lines 40 cm apart for 30 seconds. While this does induce fatigue and decreases single leg forward hop performance the overall decrease was relatively small (<10 cm). It is likely necessary to induce a greater amount of fatigue; thus further limiting single leg forward hop performance.
- Conditions
- Healthy
- Being tested
- Step-Down Test (2 min), Side hop test (30 s)
- Keywords
- Side Hop, Forward Hop, Step test, Vertical Jump
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Step-Down Test (2 min)Other
The 2-minute single limb lateral-step down test will be used to induce lower extremity muscle fatigue. Participants will be instructed to perform a single limb lateral step-down test on a 31 cm box (12-inches), touching their heel to the floor each time as many times as possible in 2 minutes. The number of lateral step-downs will be recorded.
Side hop test (30 s)Other
The 30 second side hop test will be used to induce lower extremity muscle fatigue. Participants will be instructed to jump as many times as possible over two parallel strips of tape placed 40 cm apart, but must initiate approximately 30 degrees of knee flexion each jump. The number of successful jumps performed within 30 seconds will be recorded and used for data analysis. An unsuccessful jump will be defined as touching the tape or the area inside the tape. We will record the number of successful trials.
| Study group | Role | What they receive |
|---|---|---|
| Exercise: step-down test (2 min) | Experimental | The 2-minute single limb lateral-step down test will be used to induce lower extremity muscle fatigue. Participants will be instructed to perform a single limb lateral step-down test on a 31 cm box (12-inches), touching their heel to the floor each time as many times as possible in 2 minutes. The number of lateral step-downs will be recorded. Receives: Other: Step-Down Test (2 min) |
| Exercise: side hop test (30 s) | Experimental | The 30 second side hop test will be used to induce lower extremity muscle fatigue. Participants will be instructed to jump as many times as possible over two parallel strips of tape placed 40 cm apart, but must initiate approximately 30 degrees of knee flexion each jump. The number of successful jumps performed within 30 seconds will be recorded and used for data analysis. An unsuccessful jump will be defined as touching the tape or the area inside the tape. We will record the number of successful trials. Receives: Other: Side hop test (30 s) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Single limb hop distance (cm)
While standing on one leg participants will be instructed to hop as far forward as possible with a controlled single limb landing.
Measured: Change from baseline single limb hop distance immediately after fatigue exercise
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Apr 2017
- Study startNov 2016
- Primary completionApr 2017
- Study completionApr 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Creighton University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Terry L Grindstaff, PhD, PT, ATC, Principal investigator, Creighton University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03133078
- Sponsor's protocol ID
- 959318
- Status last verified
- May 2017
- First submitted
- 17 Nov 2016
- Last updated
- 4 May 2017
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 4 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Impact of Fatigue on Jumping Performance
- ClinicalTrials.gov ID
- NCT03133078
- Acronym / sponsor ID
- 959318
- Conditions
- Healthy
- Keywords
- Side Hop, Forward Hop, Step test, Vertical Jump
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Creighton UniversityUniversity, hospital or other
- Study start
- Nov 2016
- Primary completion
- Apr 2017 (actual)
- Study completion
- Apr 2017 (actual)
- First posted
- 28 Apr 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study will be to determine the effects of a 2-minute single limb lateral step-down fatigue test versus a 30 second side hop test on single limb forward hop distance.
Detailed description
Current methods to induce fatigue often incorporate equipment not available in all clinical settings or include tasks that are difficult to standardize. One of the tests to fatigue the leg muscles is the leg extensor fatigue test using a unilateral weight machine. There are drawbacks to this testing including the clinician having access to the equipment, testing only fatigued a single muscle group, and it is less sport/task specific compared to jump testing. Our previous work has incorporated the use of a side hop task that is performed by hopping over two lines 40 cm apart for 30 seconds. While this does induce fatigue and decreases single leg forward hop performance the overall decrease was relatively small (<10 cm). It is likely necessary to induce a greater amount of fatigue; thus further limiting single leg forward hop performance.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Exercise: step-down test (2 min) | Experimental | Other: Step-Down Test (2 min)The 2-minute single limb lateral-step down test will be used to induce lower extremity muscle fatigue. Participants will be instructed to perform a single limb lateral step-down test on a 31 cm box (12-inches), touching their heel to the floor each time as many times as possible in 2 minutes. The number of lateral step-downs will be recorded. |
| Exercise: side hop test (30 s) | Experimental | Other: Side hop test (30 s)The 30 second side hop test will be used to induce lower extremity muscle fatigue. Participants will be instructed to jump as many times as possible over two parallel strips of tape placed 40 cm apart, but must initiate approximately 30 degrees of knee flexion each jump. The number of successful jumps performed within 30 seconds will be recorded and used for data analysis. An unsuccessful jump will be defined as touching the tape or the area inside the tape. We will record the number of successful trials. |
Who may qualify
- Ages
- 19 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- No history of knee surgery
- Tegner score >5
Key exclusion criteria (2 listed)
- Participants with traumatic spine or lower extremity injury within past 6 months
- Participants who are unable to give consent or are unable to understand procedures of experiment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Step-Down Test (2 min)The 2-minute single limb lateral-step down test will be used to induce lower extremity muscle fatigue. Participants will be instructed to perform a single limb lateral step-down test on a 31 cm box (12-inches), touching their heel to the floor each time as many times as possible in 2 minutes. The number of lateral step-downs will be recorded. | Other | Exercise: step-down test (2 min) |
| Side hop test (30 s)The 30 second side hop test will be used to induce lower extremity muscle fatigue. Participants will be instructed to jump as many times as possible over two parallel strips of tape placed 40 cm apart, but must initiate approximately 30 degrees of knee flexion each jump. The number of successful jumps performed within 30 seconds will be recorded and used for data analysis. An unsuccessful jump will be defined as touching the tape or the area inside the tape. We will record the number of successful trials. | Other | Exercise: side hop test (30 s) |
Primary outcome
Single limb hop distance (cm)
Time frame: Change from baseline single limb hop distance immediately after fatigue exercise
While standing on one leg participants will be instructed to hop as far forward as possible with a controlled single limb landing.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 May 2017.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Terry L Grindstaff, PhD, PT, ATC principal investigator
Creighton University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Step-Down Test (2 min) and Side hop test (30 s) in people with Healthy, run by Creighton University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Single limb hop distance (cm) (time frame: Change from baseline single limb hop distance immediately after fatigue exercise). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 May 2017.