Abstract
Human gait has been extensively investigated, although
less is reported about trunk muscle activation during gait.
The study aim was to determine internal oblique (IO) and
external oblique (EO) muscle activity during walking and
running, using a quartile method of analysis. Kinematic
data were collected using 10 high speed cameras to
identify reflective markers positioned over the left and
right lateral malleoli in 12 healthy participants. Surface
electromyography (EMG) electrodes were attached to EO
and IO (left and right sides). EMG signals were transmitted via telemetry and synchronised with the kinematic data collected during treadmill walk and run (three trials each). Surface EMG data were full-wave rectified and re-sampled to match kinematic data. Data were cut into motion cycles based on the right malleolus. From each motion cycle, the stride parameters of height and length based on the left and right malleoli were calculated. EMG data were expressed as a percentage of the Maximal Observed EMG (%MOE) and the first (Q1), second (Q2), third (Q3) and interquartile range (IQR) were calculated. For Q2 during walk, OI left was significantly greater than OE left (p=0.038), but no statistical significance between any muscles for Q2 was found during running. There were no statistically significant IQR differences found between any of the muscles during
walking or running. In conclusion, OI and OE are similar
in their phasic activity during walking and running.
less is reported about trunk muscle activation during gait.
The study aim was to determine internal oblique (IO) and
external oblique (EO) muscle activity during walking and
running, using a quartile method of analysis. Kinematic
data were collected using 10 high speed cameras to
identify reflective markers positioned over the left and
right lateral malleoli in 12 healthy participants. Surface
electromyography (EMG) electrodes were attached to EO
and IO (left and right sides). EMG signals were transmitted via telemetry and synchronised with the kinematic data collected during treadmill walk and run (three trials each). Surface EMG data were full-wave rectified and re-sampled to match kinematic data. Data were cut into motion cycles based on the right malleolus. From each motion cycle, the stride parameters of height and length based on the left and right malleoli were calculated. EMG data were expressed as a percentage of the Maximal Observed EMG (%MOE) and the first (Q1), second (Q2), third (Q3) and interquartile range (IQR) were calculated. For Q2 during walk, OI left was significantly greater than OE left (p=0.038), but no statistical significance between any muscles for Q2 was found during running. There were no statistically significant IQR differences found between any of the muscles during
walking or running. In conclusion, OI and OE are similar
in their phasic activity during walking and running.
| Original language | English |
|---|---|
| Pages | 1-2 |
| Number of pages | 2 |
| Publication status | Published - 9 Aug 2013 |
| Externally published | Yes |
| Event | XXIV Congress of the International Society of Biomechanics: XV Brazilian Congress of Biomechanics - Natal, Brazil Duration: 4 Aug 2013 → 9 Aug 2013 https://isbweb.org/activities/congresses (Conference details) |
Conference
| Conference | XXIV Congress of the International Society of Biomechanics |
|---|---|
| Abbreviated title | ISB 2013 Brazil |
| Country/Territory | Brazil |
| City | Natal |
| Period | 4/08/13 → 9/08/13 |
| Internet address |
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