Surface EMG and torsion measurements during snow skiing

Laboratory and field tests

J. K. Louie, Chen-Yuan Kuo, M. D. Gutierrez, C. D. Mote

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The relationship between mean rectified EMG (MREMG) measured with surface electrodes and the longitudinal torsion of the lower extremity was investigated in laboratory and snow skiing experiments. Linear regression of the MREMG from the gluteus medius and the peroneus longus with the torsion measured at the foot in the laboratory tests showed that torsion can be predicted with correlation coefficients greater than 0.95 and with a standard deviation less than 5 Nm over all knee flexions and weight bearing. A similar correspondence between MREMG and torsion during skiing does not exist. MREMG is dominantly correlated to posture and body position control functions in skiing. During falling, during ski binding release, and during possible injury sustaining situations, the MREMG was always relatively large, but it was not distinguishable from that associated with smaller torsion of the lower extremity.

Original languageEnglish (US)
JournalJournal of Biomechanics
Volume17
Issue number10
DOIs
StatePublished - 1984
Externally publishedYes

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Skiing
Snow
Torsional stress
Lower Extremity
Weight-Bearing
Posture
Bearings (structural)
Foot
Linear Models
Knee
Electrodes
Position control
Linear regression
Wounds and Injuries
Experiments

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Surface EMG and torsion measurements during snow skiing : Laboratory and field tests. / Louie, J. K.; Kuo, Chen-Yuan; Gutierrez, M. D.; Mote, C. D.

In: Journal of Biomechanics, Vol. 17, No. 10, 1984.

Research output: Contribution to journalArticle

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