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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


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


Understanding the Role of Athlete Screening Tests in Sports Science
This post explores the potential for screening tests to predict sports injury and how they fit into an injury risk minimization framework.
Jo Clubb
5 min read


Practitioner's Guide to Shoulders
The following excerpt is taken from the VALD eBook 'Practitioner's Guide to Shoulders'.
Jo Clubb
3 min read


Understanding Rate of Force Development (RFD)
This post delve into the significance of RFD, explore how it is calculated, and discuss its practical applications.
Jo Clubb
4 min read


The Science Underpinning Isometric Exercises: 4 Reasons for Their Popularity
This post explains the science underpinning isometric strength training and four key reasons why they have become so popular.
Jo Clubb
4 min read


Understanding Impulse in the Nordic Hamstring Exercise
This blog post delves into the usefulness of impulse in the Nordic hamstring exercise, exploring its definition and how it can be used.
Jo Clubb
3 min read


Five Ways Sports Technology Enhances Team Training Environments
I discuss five key ways sports technology enhances team training, and their potential pitfalls.
Jo Clubb
5 min read


How to Calculate Jump Height: Flight Time vs Impulse Momentum
This post compares the two prevalent methods for calculating jump height: flight time and impulse momentum.
Jo Clubb
5 min read


Measures That Matter in Football
This article explores which sports science measures matter most in football (soccer).
Jo Clubb
4 min read


Preseason Testing Objectives in Team Sports
This excerpt is taken from the VALD eBook 'Practitioner's Guide to Preseason', which covers the fundamentals of planning preseason.
Jo Clubb
4 min read


Measures That Matter in American Football
With strictly one game a week, the remaining six days must be expertly managed to balance training load and recovery.
Jo Clubb
4 min read


Objective Muscle Fatigue Assessment: A Missing Puzzle Piece?
This article delves into the science behind Myocene and its potential application in athlete monitoring programmes.
Jo Clubb
5 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


Predicting Soccer Players’ Fitness Status Through a Machine-Learning Approach
Here we introduce our new publication in IJSPP: Predicting Soccer Players’ Fitness Status Through a Machine-Learning Approach
Jo Clubb
2 min read


Jump Testing with Force Plates Explained
This video delves into the methodology of various jump tests including the countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ).
Jo Clubb
4 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


Monitoring Readiness in Female Footballers
Our new publication Monitoring Readiness to Train and Perform in Female Football: Current Evidence and Recommendations for Practitioners
Jo Clubb
2 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


Timing Gates for Speed Testing: The Ultimate Guide
In this video, we discuss how to use timing gates, and the SmartSpeed system from VALD Performance.
Jo Clubb
3 min read
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