Influence of Lower Leg Rotation on Knee Joint Extension Torque and Work Load

[Purpose] To clarify the effect of lower leg rotation on knee joint extension torque and work load in knee extension exercise. [Subjects and Methods] The subjects were 20 healthy male adults. Knee extension torque was measured using a Biodex System 3. Maximum isokinetic knee extension exercise was p...

Full description

Saved in:
Bibliographic Details
Published in:Rigaku ryoho kagaku 2017, Vol.32(1), pp.17-20
Main Authors: SUGAI, Takuya, SOMA, Toshio
Format: Article
Language:jpn ; eng
Subjects:
lower leg rotation
peak torque
work load
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Purpose] To clarify the effect of lower leg rotation on knee joint extension torque and work load in knee extension exercise. [Subjects and Methods] The subjects were 20 healthy male adults. Knee extension torque was measured using a Biodex System 3. Maximum isokinetic knee extension exercise was performed from knee flexion of 90 to 30° at angular velocities of 60, 180 and 300°/sec. The value, time and angle of peak torque, and the initial and final work loads were compared among the neutral, and externally and internally rotated positions of the lower leg. [Results] At an angular velocity of 60°/sec, the neutral position elicited significantly greater average values of peak torque, and both the initial and final work loads than either the externally or internally rotated leg positions. [Conclusion] These results suggest that strengthening knee extension torque with the lower leg internally and externally rotated might help to prevent injury.
ISSN:1341-1667
2434-2807
DOI:10.1589/rika.32.17