Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles

Shinichirou Yamamoto, T. Kumagai, H. Obata, H. Koyama, T. Komeda, K. Nakazawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study examined the effect of different joint angle on the sensitivity of short- and long-latency stretch reflex responses in ankle flexor and ankle extensor muscles. The B-mode echo image of each muscle in individual subject was used to estimate the change of muscle fiber length. The stretch reflex sensitivity of short- and long-latency components was evaluated by the multiple linear regression analysis with two independent variables, muscle fiber stretching velocity (MSV) and background EMG activity (BGA). The reflex sensitivity of short-latency component (M1) in soleus (SOL) muscle is dependent on the ankle joint angle and initial muscle fiber length. However, the reflex sensitivity of short- and long-latency components (M1 and M2) in gastrocnemius (GAS) muscle is not always dependent on initial muscle fiber length. Moreover, the reflex sensitivity of Ml in SOL is dependent on knee joint angle. On the other hand, in all conditions the reflex sensitivity of ankle flexor muscle: tibialis anterior (TA) was significantly lower than that of ankle extensor muscles. These results indicated that the joint angle dependency of the standardized sensitivity of short- and long-latency stretch reflex responses was different in different muscles.

Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsR.S. Leder
Pages1483-1486
Number of pages4
Volume2
Publication statusPublished - 2003
EventA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
Duration: 2003 Sep 172003 Sep 21

Other

OtherA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryMexico
CityCancun
Period03/9/1703/9/21

Fingerprint

Muscle
Fibers
Linear regression
Regression analysis
Stretching

Keywords

  • Human
  • Long-latency stretch reflex
  • Muscle fiber length
  • Short-latency stretch reflex
  • Ultrasonography

ASJC Scopus subject areas

  • Bioengineering

Cite this

Yamamoto, S., Kumagai, T., Obata, H., Koyama, H., Komeda, T., & Nakazawa, K. (2003). Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles. In R. S. Leder (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2, pp. 1483-1486)

Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles. / Yamamoto, Shinichirou; Kumagai, T.; Obata, H.; Koyama, H.; Komeda, T.; Nakazawa, K.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. ed. / R.S. Leder. Vol. 2 2003. p. 1483-1486.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yamamoto, S, Kumagai, T, Obata, H, Koyama, H, Komeda, T & Nakazawa, K 2003, Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles. in RS Leder (ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 2, pp. 1483-1486, A New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Cancun, Mexico, 03/9/17.
Yamamoto S, Kumagai T, Obata H, Koyama H, Komeda T, Nakazawa K. Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles. In Leder RS, editor, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2. 2003. p. 1483-1486
Yamamoto, Shinichirou ; Kumagai, T. ; Obata, H. ; Koyama, H. ; Komeda, T. ; Nakazawa, K. / Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. editor / R.S. Leder. Vol. 2 2003. pp. 1483-1486
@inproceedings{cec707dc7604415799927d4e24b6e8b6,
title = "Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles",
abstract = "This study examined the effect of different joint angle on the sensitivity of short- and long-latency stretch reflex responses in ankle flexor and ankle extensor muscles. The B-mode echo image of each muscle in individual subject was used to estimate the change of muscle fiber length. The stretch reflex sensitivity of short- and long-latency components was evaluated by the multiple linear regression analysis with two independent variables, muscle fiber stretching velocity (MSV) and background EMG activity (BGA). The reflex sensitivity of short-latency component (M1) in soleus (SOL) muscle is dependent on the ankle joint angle and initial muscle fiber length. However, the reflex sensitivity of short- and long-latency components (M1 and M2) in gastrocnemius (GAS) muscle is not always dependent on initial muscle fiber length. Moreover, the reflex sensitivity of Ml in SOL is dependent on knee joint angle. On the other hand, in all conditions the reflex sensitivity of ankle flexor muscle: tibialis anterior (TA) was significantly lower than that of ankle extensor muscles. These results indicated that the joint angle dependency of the standardized sensitivity of short- and long-latency stretch reflex responses was different in different muscles.",
keywords = "Human, Long-latency stretch reflex, Muscle fiber length, Short-latency stretch reflex, Ultrasonography",
author = "Shinichirou Yamamoto and T. Kumagai and H. Obata and H. Koyama and T. Komeda and K. Nakazawa",
year = "2003",
language = "English",
volume = "2",
pages = "1483--1486",
editor = "R.S. Leder",
booktitle = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",

}

TY - GEN

T1 - Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles

AU - Yamamoto, Shinichirou

AU - Kumagai, T.

AU - Obata, H.

AU - Koyama, H.

AU - Komeda, T.

AU - Nakazawa, K.

PY - 2003

Y1 - 2003

N2 - This study examined the effect of different joint angle on the sensitivity of short- and long-latency stretch reflex responses in ankle flexor and ankle extensor muscles. The B-mode echo image of each muscle in individual subject was used to estimate the change of muscle fiber length. The stretch reflex sensitivity of short- and long-latency components was evaluated by the multiple linear regression analysis with two independent variables, muscle fiber stretching velocity (MSV) and background EMG activity (BGA). The reflex sensitivity of short-latency component (M1) in soleus (SOL) muscle is dependent on the ankle joint angle and initial muscle fiber length. However, the reflex sensitivity of short- and long-latency components (M1 and M2) in gastrocnemius (GAS) muscle is not always dependent on initial muscle fiber length. Moreover, the reflex sensitivity of Ml in SOL is dependent on knee joint angle. On the other hand, in all conditions the reflex sensitivity of ankle flexor muscle: tibialis anterior (TA) was significantly lower than that of ankle extensor muscles. These results indicated that the joint angle dependency of the standardized sensitivity of short- and long-latency stretch reflex responses was different in different muscles.

AB - This study examined the effect of different joint angle on the sensitivity of short- and long-latency stretch reflex responses in ankle flexor and ankle extensor muscles. The B-mode echo image of each muscle in individual subject was used to estimate the change of muscle fiber length. The stretch reflex sensitivity of short- and long-latency components was evaluated by the multiple linear regression analysis with two independent variables, muscle fiber stretching velocity (MSV) and background EMG activity (BGA). The reflex sensitivity of short-latency component (M1) in soleus (SOL) muscle is dependent on the ankle joint angle and initial muscle fiber length. However, the reflex sensitivity of short- and long-latency components (M1 and M2) in gastrocnemius (GAS) muscle is not always dependent on initial muscle fiber length. Moreover, the reflex sensitivity of Ml in SOL is dependent on knee joint angle. On the other hand, in all conditions the reflex sensitivity of ankle flexor muscle: tibialis anterior (TA) was significantly lower than that of ankle extensor muscles. These results indicated that the joint angle dependency of the standardized sensitivity of short- and long-latency stretch reflex responses was different in different muscles.

KW - Human

KW - Long-latency stretch reflex

KW - Muscle fiber length

KW - Short-latency stretch reflex

KW - Ultrasonography

UR - http://www.scopus.com/inward/record.url?scp=1542331693&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1542331693&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 1483

EP - 1486

BT - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

A2 - Leder, R.S.

ER -