Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Reliability and Validity

Reliability and Validity

Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Associations between internal training load and changes in sprint endurance and aerobic fitness during a 4 - week off-season HIIT program in adolescent female football players.

Scientific reports·2026

Same author

Disability profiles in progressive multiple sclerosis reflect pathology distribution, independent of clinical phenotype.

Brain communications·2026

Same author

Combined jump rope and elastic resistance band training improves agility, body balance and neuromuscular performance in young male basketball players.

Scientific reports·2026

Same author

Walking handball as an exercise alternative to conventional walking and recreational team handball.

Frontiers in sports and active living·2026

Same author

Small-Sided Games vs. Running-Based High-Intensity Interval Training: An Exploratory Study of the Effects on Physical Performance and Internal Load in Under-11 Male Football Players.

Sports (Basel, Switzerland)·2026

Same author

Monitoring readiness in Italian amateur female volleyball players: combined use of the Countermovement Jump Test and Subjective Wellness Questionnaires.

The Journal of sports medicine and physical fitness·2026

Search research articles

Related Experiment Video

Updated: May 21, 2026

Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players

Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players

Published on: June 10, 2025

Concurrent validity of vertical jump performance assessment systems.

Carlo Castagna¹, Marco Ganzetti, Massimiliano Ditroilo

¹Football Training and Biomechanics Laboratory, Italian Football Federation (FIGC), Technical Department, Coverciano (Florence), Italy. castagnac@libero.it

Journal of Strength and Conditioning Research

|June 1, 2012

Summary

Portable systems like Optojump and Myotest show good validity for vertical jump (VJ) assessment in field settings. While both correlate well with force platforms, users should note differences in flight time measurements between systems.

More Related Videos

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Published on: June 8, 2017

Related Experiment Videos

Last Updated: May 21, 2026

Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players

Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players

Published on: June 10, 2025

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Published on: June 8, 2017

Area of Science:

Sports Science
Biomechanics
Human Movement Analysis

Background:

Accurate vertical jump (VJ) assessment is crucial for evaluating athletic performance.
Portable measurement systems offer convenience for field-based testing.
Validating these portable systems against gold-standard methods is essential.

Purpose of the Study:

To assess the concurrent validity of two portable VJ assessment systems: an optical mat (Optojump) and an accelerometer-based system (Myotest).
To compare the VJ flight times measured by these portable systems against a force platform under field conditions.

Main Methods:

Twenty rugby players performed countermovement jumps (CMJ) while their VJ flight times were concurrently measured using a force platform, Optojump, and Myotest.
Statistical analyses, including bias and correlation, were used to compare the data from the three systems.

Main Results:

Both Optojump and Myotest demonstrated convergent validity when compared to the force platform, with high correlations observed (Optojump: r=0.99; Myotest: r=0.89).
A significant difference was found between Optojump and Myotest, with Myotest recording longer flight times (approx. 7.2% longer).
Both systems showed high association with each other (r=0.91).

Conclusions:

The Optojump and Myotest systems are valid for assessing VJ during CMJ in field conditions.
Researchers and practitioners should exercise caution when interpreting data from different portable VJ measurement systems due to observed discrepancies.