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Understanding the Reactive Strength Index (RSI)
Learn how to calculate the Reactive Strength Index with three different jump testing methods. Reactive strength is an essential physical...
Jo Clubb
4 min read


Integrating VALD's Training Mode with ForceFrame and NordBord Technology
In this post, I delve into VALD's new training mode feature, and how it can be applied with NordBord and ForceFrame.
Jo Clubb
5 min read


The Eccentric Utilization Ratio (EUR) Explained
This post explains how to calculate and use the Eccentric Utilization Ratio (EUR) from squat jump and countermovement jump data.
Jo Clubb
4 min read


Hamstring Strength Testing: Beyond the Nordic Hamstring Exercise
Here we delve into different ways to test hamstring muscle strength.
Jo Clubb
3 min read


Measuring Athlete Asymmetries: The 'Calculation Conundrum'
In this video, I discuss calculating athlete asymmetries, including all the 'Calculation Conundrum' equations.
Jo Clubb
3 min read


Force Plates in Sport Explained
Force plate technology is widely used across sports & biomechanics labs to test athletic capacities. Go inside the technology in this video.
Jo Clubb
4 min read


Measuring Shoulder Strength with VALD's ForceFrame
This post discusses how to use the VALD Performance ForceFrame to measure shoulder strength in internal and external rotation.
Jo Clubb
4 min read


Isometric Mid Thigh Pull Strength Test: The Ultimate Guide
This YouTube video discusses everything you need to know about using the isometric mid thigh pull strength test with your athletes.
Jo Clubb
1 min read


Measuring Hip & Groin Strength: A Guide to Using VALD's ForceFrame
This video will show you how to use the VALD Performance ForceFrame to measure strength in the hip and groin area.
Jo Clubb
4 min read


Measuring Hamstring Strength: A Guide to Using VALD's NordBord
In this video, we're going to discuss hamstring testing, and specifically the Nordic Hamstring Exercise (Russian Leans) strength test.
Jo Clubb
3 min read
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