📐 What Is Motion Analysis?
Motion analysis is the systematic observation, measurement and assessment of athletes’ movements in order to understand movement quality, efficiency and potential directions for improvement. It is one of the most important sports science tools helping athletes and coaches make data-driven decisions.
🔬 Types of Motion Analysis
👁️ Qualitative Analysis
Visual assessment of movement by a coach or specialist. Fast, requires no equipment, but subjective. Used in daily training practice.
📊 Quantitative Analysis
Collection of precise measurements: angles, velocities, forces. Objective and precise, requires equipment. Used in scientific research and elite sport.
🎥 2D Video Analysis
Single-camera video analysis in a plane. Sufficient for many sports — running, swimming, throwing.
🌐 3D Motion Capture
A multi-camera system that captures movements in three-dimensional space. The most accurate method, used in professional sport.
📋 Stages of Analysis
- Preparation: Positioning and calibration of cameras, attachment of reflective markers to anatomical landmarks.
- Data collection: The athlete performs the movement — cameras record from 100 to 1000+ frames per second.
- Processing: Software identifies the markers, creates a 3D model, and calculates angles, velocities and accelerations.
- Analysis: The obtained data are compared with norms, previous results or exemplary athlete models.
- Feedback: The results are presented to the athlete and coach, and technique corrections are suggested.
📏 Key Measured Parameters
| Parameter | Definition | Typical Example |
|---|---|---|
| Joint angle | Angle between two body segments | Knee joint angle during landing |
| Angular velocity | Rate of change of angle (°/sek.) | Heel rise velocity during sprinting |
| Center of mass (CoM) | Position of the body's center of mass | CoM trajectory during a jump |
| Base of support | Area between the foot contact points with the ground | Assessment of squat stability |
| Range of motion (ROM) | Maximum joint movement | Shoulder ROM during throwing |
| Symmetry | Similarity of left/right side movements | Leg symmetry in the running cycle |
💻 Technologies
Modern motion analysis technologies are rapidly advancing. In addition to traditional optical systems (Vicon, Qualisys), inertial sensors (IMU), smartphones with AI-based analysis (e.g., Coachs Eye), and deep learning models capable of marker-free movement recognition are increasingly used. These technologies make motion analysis more accessible not only to elite but also to amateur sport.
🙋 Frequently Asked Questions
Yes! Understanding motion analysis in sport helps you train more effectively, avoid injuries and achieve better results even at amateur level.
We recommend PubMed, Google Scholar, and Sports Medicine journals. It is also worth following publications from the Lithuanian Sports University.
It depends on the specific study. Some methods require laboratory equipment, while others can be performed with portable devices.
Coaches who understand motion analysis in sport can individualize training programs, monitor progress and adjust workloads in a timely manner.
📚 Additional Resources and Sources
To deepen your knowledge of motion analysis in sport, we recommend:
- Scientific publications and conferences of the Lithuanian Sports University (LSU)
- International journals: Journal of Sports Sciences, Medicine and Science in Sports and Exercise
- Annual congresses of the European College of Sport Science (ECSS)
- Sports science podcasts: Science of Sport, The Real Science of Sport
- Sports science programs of the Lithuanian National Olympic Committee (LTOK)
⚡ Pro Tip
Sports science is constantly evolving. What was considered true 10 years ago may be refuted today by new research. Be curious, read the latest literature, and don't be afraid to experiment — of course, while following safety principles.