Elastic properties of muscle-tendon complex in long-distance runners

@article{Kubo2000ElasticPO,
  title={Elastic properties of muscle-tendon complex in long-distance runners},
  author={Keitaro Kubo and Hiroaki Kanehisa and Yasuo Kawakami and Tetsuo Fukunaga},
  journal={European Journal of Applied Physiology},
  year={2000},
  volume={81},
  pages={181-187}
}
Abstract The purpose of this study was to investigate the elastic properties of muscle-tendon complex (MTC) in knee extensor muscles and the capacity for elastic energy utilization in long-distance runners (LDR) by comparing with data obtained from untrained individuals (CON). The elongation (L) of the tendon and aponeurosis of vastus lateralis muscle during isometric knee extension was determined by real-time brightness mode ultrasonography, while the subjects developed a gradually increasing… 

Figures and Tables from this paper

Effects of mechanical properties of muscle and tendon on performance in long distance runners
TLDR
The tendon of long distance runners is less extensible than those of untrained subjects for knee extensors, but not for plantar flexors, for both sites, however, the lower tendon stiffness may be in favor of the running performance in long distance runner.
Effects of isometric squat training on the tendon stiffness and jump performance
TLDR
The results suggest that isometric squat training changes the stiffness of human tendon–aponeurosis complex in knee extensors to act negatively on the effects of pre-stretch during stretch-shortening cycle exercises.
Effects of transient muscle contractions and stretching on the tendon structures in vivo.
TLDR
It is suggested that the stretching and repeated contractions would make the tendon structures more complaint, and further decreased the hysteresis of the Achilles tendon structures.
Relationship between elastic properties of tendon structures and performance in long distance runners
TLDR
It is suggested that better long distance runners had stiffer tendon structures in the knee extensors and more compliant ones in the plantar flexors and contributed to running performance of long distance runner separately.
Muscle performance during maximal isometric and dynamic contractions is influenced by the stiffness of the tendinous structures.
TLDR
Data indicate that muscle output in high-force isometric and dynamic muscle actions is positively related to the stiffness of the tendinous structures, possibly by means of a more effective force transmission from the contractile elements to the bone.
Effects of isometric training on the elasticity of human tendon structures in vivo.
TLDR
The present results indicate that isometric training increases the stiffness and Young's modulus of human tendon structures as well as muscle strength and size.
Effects of viscoelastic properties of tendon structures on stretch – shortening cycle exercise in vivo
TLDR
The results of this study suggest that performance during stretch – shortening cycle exercise is significantly affected by the viscoelastic properties of the tendon structures.
Effect of habitual running on human Achilles tendon load-deformation properties and cross-sectional area.
TLDR
A total training stimulus of approximately 9 mo of running in previously untrained subjects was adequate to induce significant cardiovascular improvements, although it did not result in any changes in the mechanical properties of the triceps surea tendon-aponeurosis complex or in the dimensions of Achilles tendon.
Influences of repetitive muscle contractions with different modes on tendon elasticity in vivo.
TLDR
The results suggested that the repeated longer duration contractions would make the tendon structures more compliant and that the changes in the elasticity might be not be affected by either muscle action mode or force production level but by the duration of action.
In Vivo Elastic Properties of Human Tendon Structures in Lower Limb
TLDR
In human movements, the elastic properties of tendon structures had a favorable effects on stretch-shortening cycle exercises, possibly because of improved storage and release of elastic energy.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 30 REFERENCES
Nonisometric behavior of fascicles during isometric contractions of a human muscle.
TLDR
It can be concluded that, in isometric contractions of a human muscle, mechanical work, some of which is absorbed by the tendinous tissue, is generated by the shortening of muscle fibers and that ultrasonography can be used to determine the stiffness and Young's modulus for human tendons.
Estimation of active force-length characteristics of human vastus lateralis muscle.
TLDR
The relationship between muscle force and fascicle length indicated that the VL uses the ascending (knee < 70 degrees), plateau (70 degrees), and descending regions (> 70 degrees) of the force-length curve.
Muscle architecture and function in humans.
Storage and utilization of elastic strain energy during jumping.
Utilization of stored elastic energy in leg extensor muscles by men and women.
TLDR
The results suggest that although the leg extensor muscles of the men subjects could sustain much higher stretch loads, the females may be able to utilize a greater portion of the stored elastic energy in jumping activities.
Co-activation of sprinter and distance runner muscles in isokinetic exercise.
TLDR
The data suggest that the hamstrings are used to a much greater extent than quadriceps for limb deceleration and that the distraction of antagonist muscle tension should be considered when analyzing agonist isokinetic torques.
Voluntary strength and muscle characteristics in untrained men and women and male bodybuilders.
TLDR
Flexor CSA correlated negatively with the ratio of IT, PT, and W to CSA, and Muscle fiber composition failed to correlate with any measure of strength.
Effects of Speed and Extent of Stretching on the Elastic Properties of Active Frog Muscle
TLDR
The work done during fast recoil of active striated muscle was measured by making tetanized frog sartorii shorten from about 2 mm above slack length, l 0, at high speed during a state of isometric contraction and after stretching the muscle, while active, at different speeds and by different amounts.
Muscle strength and fiber composition in athletes and sedentary men.
Members of Swedish national teams in track and field events (sprinting and jumping), downhill skiing, race walking, orienteering, and a group of sedentary men were studied to examine the relationship
Stress-strain characteristics and tensile strength of unembalmed human tendon.
...
1
2
3
...