Tags

Type your tag names separated by a space and hit enter

Function of mono- and biarticular muscles in running.
Med Sci Sports Exerc. 1993 Oct; 25(10):1163-73.MS

Abstract

In this study the function of leg muscles during stretch-shortening cycles in fast running (6 m.s-1) was investigated. For a single stance phase, kinematics, ground reaction forces, and EMG were recorded. First, rough estimates of muscle force, obtained by shifting the EMG curves +90 ms, were correlated with origin-to-insertion velocity (VOI). Second, active state and internal muscle behavior were estimated by using a muscle model that was applied for soleus and gastrocnemius. High correlations were found between estimates of muscle force and VOI time curves for mono-articular hip, knee, and ankle extensor muscles. The correlation coefficients for biarticular muscles were low. The model results showed that active state of gastrocnemius was high during increase of origin-to-insertion length (LOI), whereas active state of soleus was low during the start of increase of LOI and rose to a plateau at the time lengthening ended and shortening started. It seems that the difference in stimulation between gastrocnemius and soleus is a compromise between minimizing energy dissipation and using the stretch-shortening cycle optimally. Furthermore, it was found that the net plantar flexion moment during running reached a value of 302 Nm, which was 158% and 127% higher than the peak values reached in maximal jump and sprint push-offs, respectively. It was argued that the higher mechanical output in running than in jumping could be ascribed to the utilization of the stretch-shortening cycle in running. The higher values in running compared with sprinting, however, may lie in a difference in muscle stimulation.

Links

Publisher Full Text
Aggregator Full Text

Authors+Show Affiliations

Jacobs R
Department of Functional Anatomy, Faculty of Human Movement Sciences, Vrije Universiteit, Amsterdam, The Netherlands.
Bobbert MF
No affiliation info available
van Ingen Schenau GJ
No affiliation info available

MeSH

AdultBiomechanical PhenomenaElasticityElectromyographyHumansJointsLegMaleModels, BiologicalMovementMuscle ContractionMusclesRunning

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8231762

Citation

Jacobs, R, et al. "Function of Mono- and Biarticular Muscles in Running." Medicine and Science in Sports and Exercise, vol. 25, no. 10, 1993, pp. 1163-73.
Jacobs R, Bobbert MF, van Ingen Schenau GJ. Function of mono- and biarticular muscles in running. Med Sci Sports Exerc. 1993;25(10):1163-73.
Jacobs, R., Bobbert, M. F., & van Ingen Schenau, G. J. (1993). Function of mono- and biarticular muscles in running. Medicine and Science in Sports and Exercise, 25(10), 1163-73.
Jacobs R, Bobbert MF, van Ingen Schenau GJ. Function of Mono- and Biarticular Muscles in Running. Med Sci Sports Exerc. 1993;25(10):1163-73. PubMed PMID: 8231762.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Function of mono- and biarticular muscles in running. AU - Jacobs,R, AU - Bobbert,M F, AU - van Ingen Schenau,G J, PY - 1993/10/1/pubmed PY - 1993/10/1/medline PY - 1993/10/1/entrez SP - 1163 EP - 73 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 25 IS - 10 N2 - In this study the function of leg muscles during stretch-shortening cycles in fast running (6 m.s-1) was investigated. For a single stance phase, kinematics, ground reaction forces, and EMG were recorded. First, rough estimates of muscle force, obtained by shifting the EMG curves +90 ms, were correlated with origin-to-insertion velocity (VOI). Second, active state and internal muscle behavior were estimated by using a muscle model that was applied for soleus and gastrocnemius. High correlations were found between estimates of muscle force and VOI time curves for mono-articular hip, knee, and ankle extensor muscles. The correlation coefficients for biarticular muscles were low. The model results showed that active state of gastrocnemius was high during increase of origin-to-insertion length (LOI), whereas active state of soleus was low during the start of increase of LOI and rose to a plateau at the time lengthening ended and shortening started. It seems that the difference in stimulation between gastrocnemius and soleus is a compromise between minimizing energy dissipation and using the stretch-shortening cycle optimally. Furthermore, it was found that the net plantar flexion moment during running reached a value of 302 Nm, which was 158% and 127% higher than the peak values reached in maximal jump and sprint push-offs, respectively. It was argued that the higher mechanical output in running than in jumping could be ascribed to the utilization of the stretch-shortening cycle in running. The higher values in running compared with sprinting, however, may lie in a difference in muscle stimulation. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/8231762/Function_of_mono__and_biarticular_muscles_in_running_ L2 - https://Insights.ovid.com/pubmed?pmid=8231762 DB - PRIME DP - Unbound Medicine ER -