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Related Concept Videos

Knee Joint01:23

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
Ankle Joint01:10

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
Muscles that Move the Leg01:23

Muscles that Move the Leg

The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...
Social Facilitation01:04

Social Facilitation

Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.

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The Lower Body Positive Pressure Treadmill for Knee Osteoarthritis Rehabilitation
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Warming-up before sporting activity improves knee position sense.

Tiago Magalhães1, Fernando Ribeiro, Ana Pinheiro

  • 1Polytechnic Health Institute of the North, Vale do Sousa Higher School of Health, Department of Physiotherapy, R. Central de Gandra, 1317, 4585-116 Gandra PRD, Portugal. tiago.magalhaes86@gmail.com

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
|August 3, 2010
PubMed
Summary
This summary is machine-generated.

A warm-up program improved knee joint position sense in karatekas, specifically during closed kinetic chain (CKC) movements. Open kinetic chain (OKC) movements did not show significant improvements, highlighting the importance of CKC evaluation.

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Area of Science:

  • Sports Medicine
  • Biomechanics
  • Kinesiology

Background:

  • Knee joint position sense is crucial for athletic performance and injury prevention.
  • Warm-up routines are commonly used in sports to prepare athletes physically.
  • The specific effects of warm-up on joint position sense in different kinetic chains are not fully understood.

Purpose of the Study:

  • To investigate the impact of a standardized warm-up program on knee joint position sense in amateur karatekas.
  • To compare the effects of warm-up on joint position sense in open kinetic chain (OKC) versus closed kinetic chain (CKC) movements.

Main Methods:

  • A repeated measures design was employed in a research laboratory setting.
  • Ten young amateur karatekas participated in the study.
  • Knee joint position sense was assessed before and after a warm-up using active repositioning in both OKC and CKC.

Main Results:

  • No significant baseline differences in angular errors were found between OKC and CKC.
  • Following the warm-up, a significant reduction in absolute angular error was observed exclusively in the CKC condition (p < 0.05).
  • In CKC, participants demonstrated improved accuracy and reduced response variability after the warm-up.

Conclusions:

  • The warm-up program effectively enhanced knee joint position sense, but only in the closed kinetic chain (CKC) context.
  • Evaluating warm-up effects solely through open kinetic chain (OKC) methods may lead to an underestimation of its benefits.
  • These findings underscore the importance of considering the kinetic chain when assessing proprioceptive adaptations to warm-up protocols in athletes.