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Related Experiment Video

Updated: Jun 27, 2026

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

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Mobile Jump Assessment (mJump): A Descriptive and Inferential Study.

Alvaro Mateos-Angulo¹, Alejandro Galán-Mercant¹, Antonio Cuesta-Vargas¹

¹Universidad de Malaga, Insituto de Investigación Biomedica de Malaga, Malaga, Spain.

JMIR Rehabilitation and Assistive Technologies

|June 6, 2017

Summary

Smartphone inertial sensors can measure vertical jump performance, including jump height and fly time, in healthy adults. Acceleration data from the iPhone 4S showed higher values in countermovement jumps compared to squat jumps.

Keywords:

countermovement jump inertial sensor smartphone squat jump

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Area of Science:

Biomechanics
Sports Science
Human Motion Analysis

Background:

Vertical jump tests are crucial for assessing physical performance in athletics and rehabilitation.
Traditional measurement devices are often limited to laboratory settings.
Smartphones offer accessible, portable kinematic data collection via inertial sensors.

Purpose of the Study:

To analyze kinematics using an iPhone 4S inertial sensor during vertical jump tests.
To compare smartphone-derived data with manual dynamometry and contact mat measurements.
To evaluate squat jump and countermovement jump performance in healthy adults.

Main Methods:

A cross-sectional study involving 27 healthy young adults.
Participants performed squat jump and countermovement jump tests (81 jumps total).
Acceleration variables were captured using a smartphone's inertial sensor; contact mat and dynamometer data were also collected.

Main Results:

Kinematic variables from the iPhone 4S inertial sensor, lower limb dynamometry, and contact mat were described for vertical jump tests.
Acceleration patterns were identified and analyzed for both squat jump and countermovement jump tests using smartphone data.
The study successfully described the execution of vertical jumps using smartphone-derived acceleration variables.

Conclusions:

The iPhone 4S's built-in inertial sensor effectively measures acceleration variables during vertical jump tests in healthy young adults.
Acceleration kinematics derived from the smartphone sensor are significantly higher in countermovement jumps than in squat jumps.