Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Variability: Analysis01:11

Variability: Analysis

Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
Random and Systematic Errors01:20

Random and Systematic Errors

Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
Random and Systematic Errors01:20

Random and Systematic Errors

Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
Uncertainty in Measurement: Accuracy and Precision03:37

Uncertainty in Measurement: Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.
Fatigue01:21

Fatigue

Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...

You might also read

Related Articles

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

Sort by
Same author

Characterizing thunderstorm asthma emergency department presentations using natural language processing for improved real-time surveillance.

American journal of epidemiology·2026
Same author

Ankle Joint Biomechanics in Recreational Runners with Resolved and Incident Plantar Fasciitis: A One-Year Prospective 4HAIE Cohort Study.

Scandinavian journal of medicine & science in sports·2026
Same author

Biomechanical insights into Achilles tendinopathy risk and protection in runners: a large prospective study 4HAIE.

British journal of sports medicine·2026
Same author

The influence of sex on shoulder and hip joint resting position and mobility in elite golfers.

Scientific reports·2026
Same author

Integration of coordination and kinetic analysis reveals mechanisms of upper limb joint loading and technique-specific strategies in female gymnastics.

Sports biomechanics·2026
Same author

Head stability and coordination variability during locomotion under different visual task constraints as a function of repetitive head impact exposure.

Sports biomechanics·2026
Same journal

Treatment of stress fracture of the olecranon in throwing athletes with internal fixation through a small incision.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
Same journal

Management of degenerative rotator cuff tears: a review and treatment strategy.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
Same journal

A variant of a type V lateral clavicle fracture involving a posteriorly displaced medial segment. A case report.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
Same journal

Contralateral anterior cruciate ligament injury after anterior cruciate ligament reconstruction: a case controlled study.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
Same journal

Simple method for confirming tibial osteotomy during total knee arthroplasty.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
Same journal

Arthroscopic resection of multiple ossifying tumors in the infrapatellar fat pad.

Sports medicine, arthroscopy, rehabilitation, therapy & technology : SMARTT·2012
See all related articles

Related Experiment Video

Updated: May 16, 2026

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy
04:37

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

Published on: March 1, 2024

Coordinative variability and overuse injury.

Joseph Hamill1, Christopher Palmer, Richard E A Van Emmerik

  • 1Department of Kinesiology, Biomechanics Laboratory, University of Massachusetts Amherst, 30 Eastman Lane, Amherst, 01003, MA, USA. jhamill@kin.umass.edu.

Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology : SMARTT
|November 29, 2012
PubMed
Summary
This summary is machine-generated.

Higher coordinative variability in movement indicates a healthy state, while lower variability is linked to overuse injuries like patella-femoral pain syndrome. Understanding joint interaction is key to injury prevention.

More Related Videos

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
06:52

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

Published on: May 26, 2020

Related Experiment Videos

Last Updated: May 16, 2026

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy
04:37

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

Published on: March 1, 2024

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
06:52

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

Published on: May 26, 2020

Area of Science:

  • Biomechanics
  • Dynamical Systems Theory
  • Sports Medicine

Background:

  • Overuse injuries result from repetitive micro-trauma, with biomechanical parameters often cited but difficult to verify as causative.
  • Existing research often struggles to establish a definitive link between specific biomechanical parameters and the causation of overuse injuries.

Purpose of the Study:

  • To investigate overuse injuries, such as patella-femoral pain syndrome, through a dynamical systems approach.
  • To explore the functional role of coordinative variability in movement and its relationship to injury states.

Main Methods:

  • Utilized a dynamical systems approach to analyze overuse injuries.
  • Employed continuous relative phase and modified vector coding methods, inspired by Bernstein's work, to assess coordinative variability.

Main Results:

  • A higher state of coordinative variability was consistently found to be associated with healthy movement.
  • A lower state of coordinative variability was identified as indicative of unhealthy or pathological movement patterns, characteristic of overuse injuries.

Conclusions:

  • Coordinative variability plays a functional role in movement, with a specific range of higher variability being optimal for non-injured athletes.
  • While reduced variability is linked to injury, further research is needed to determine if it is a cause or a result of the injury.