Rowing Ergometer Reliability in Jiu Jitsu Practitioners

The purpose of this study is to assess the reliability of performance variables during a repeated interval anaerobic rowing protocol. Additionally, we will evaluate potential performance differences between jiu jitsu and non-jiu jitsu practitioners for measures such as handgrip strength, countermovement jump variables, and isometric mid-thigh pull variables.

This study will consist of two parts. All participants will complete part 1 consisting of 4 visits. Jiu jitsu practitioners will be invited back for part 2 consisting of 1 additional visit. Each visit will take approximately 30-60 minutes to complete. Visit 1 will consist of an informed consent and completion of three questionnaires. Visit 2 will consist of anthropometrics (height, weight, and body composition), test familiarization, and a 6-minute rowing test. Visit 3 and 4 will consist of the repeated interval anaerobic rowing protocol with assessments of handgrip strength, countermovement jump variables, and isometric mid-thigh pull variables before and immediately after the protocol. Jiu jitsu practitioners will be invited back for a 5th visit consisting of the Jiu Jitsu Anaerobic Performance Test with assessments of handgrip strength, countermovement jump variables, and isometric mid-thigh pull variables before and immediately after the test.

Visits 2-5 will be separated by at least 48 hours.

Inclusion Qualifications:

Part 1

Male between the ages of 18-45 years old
Healthy as determined by the PAR-Q+
At least recreationally active (3 or more days a week)
English speaking

Part 2

Male between the ages of 18-45 years old
Healthy as determined by the PAR-Q+
English speaking
At least recreationally active (3 or more days a week)
Jiu jitsu practitioners with greater than 2 years of jiu jitsu experience OR holding a blue belt or higher in jiu jitsu

Exclusion Qualifications:

You may not participate in this research opportunity if any of the following applies to you:

Physical limitations that prevent individuals from completing all testing procedures.
Concerns regarding health status indicated on the PAR-Q+.
Jiu jitsu experience of less than two years and below a blue belt
Non-binary gender identity or gender identity not consistent with biological sex
Use of hormone therapy within the past 6 months

Participate in this Research

Submitting this form will put you in contact with the main point of contact for this project. They will provide more information and determine if you meet all of the qualifications needed.