Title

The effect of leg muscle activation state and localized muscle fatigue on tibial response during impact.

Date of Award

2005

Degree Type

Thesis

Degree Name

M.H.K.

Department

Kinesiology

Keywords

Health Sciences, Recreation.

Rights

CC BY-NC-ND 4.0

Abstract

The purpose of this study was to examine the effects of activation state, localized muscle fatigue (LMF), gender, and muscle on the tibial response parameters (TRPs) measured at the knee during heel impacts. A human pendulum apparatus delivered consistent impacts to the unshod, right (dominant) heel of 15 females and 15 males (m age 22.6 +/- 1.4 years, body mass 71.7 +/- 15.1 kg, and height 1.74 +/- 0.11 m). The tibialis anterior (TA: Session 1) and lateral gastrocnemius (LG: Session 2) muscles were examined using electromyography to allow voluntary contraction of various activation states [baseline, 15%, 30%, 45%, 60% of the maximum activation state (MAS)], and to assess LMF. Subjects were successfully able to voluntarily contract their muscle to the required activation states. (Abstract shortened by UMI.) Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .H65. Source: Masters Abstracts International, Volume: 44-03, page: 1354. Thesis (M.H.K.)--University of Windsor (Canada), 2005.