Impact of Fatigue on Jumping Performance

NCT03133078 | Completed

• 1 other identifier: 959318
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Healthy

Keywords

Side Hop; Forward Hop; Step test; Vertical Jump

Outcome Measures

Primary Outcomes (1)

• 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.

  Change from baseline single limb hop distance immediately after fatigue exercise

Study Arms (2)

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.

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.

Other: Side hop test (30 s)

Interventions

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.

Exercise: step-down test (2 min)

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.

Exercise: side hop test (30 s)

Eligibility Criteria

• Age: 19 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• No history of knee surgery
• Tegner score \>5

You may not qualify if:

• 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

Sponsors & Collaborators

• Creighton University: lead

Study Sites (1)

Creighton University

Omaha, Nebraska, 68178, United States

Location

Study Officials

• Terry L Grindstaff, PhD, PT, ATC

  Creighton University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 17, 2016
• First Posted: April 28, 2017
• Study Start: November 1, 2016
• Primary Completion: April 1, 2017
• Study Completion: April 1, 2017
• Last Updated: May 4, 2017

Record last verified: 2017-05

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)