Rapid Research Defense
Purpose: To examine muscle activation and biomechanical differences between high incline walking (HIW) at 20% grade and level grade jogging (LGJ) at isocaloric intensity on a treadmill. Methods: Physically inactive men and women between the ages of 18-59 years of age completed the study. Participants (n=22) completed two isocaloric exercise trials (HIW and LGJ) ten minutes in duration. EMG data was obtained from the Bicep Femoris (BF), Glute (GT), Lateral Gastrocnemius (LG), Tibialis Anterior (TA), Vastus Lateralis (VL), Anterior Deltoid (AD), Erector Spinae (ES) and Soleus (SOL). Axial acceleration was determined by IMU data from the shank. Results: When subjects were matched at isocaloric intensities between LGJ and HIW, mean peak axial acceleration was significantly higher in the run than in the walk (p<.001). Peak EMG activation was significantly greater during LGJ in BF (p=.02), GT (p=.01), LG (p=.006), TA (p=.001), VL (p=.003) when compared to HIW. ES and SOL peak EMG activation did not differ between trials. Conclusion: Isocaloric LGJ results in predominantly greater peak muscle activation and an increase in axial acceleration.
AXIAL ACCELERATION OF THE SHANK AND EMG DIFFERENCES BETWEEN ISOCALORIC HIGH-INCLINE WALKING AND LEVEL GRADE JOGGING
Purpose: To examine muscle activation and biomechanical differences between high incline walking (HIW) at 20% grade and level grade jogging (LGJ) at isocaloric intensity on a treadmill. Methods: Physically inactive men and women between the ages of 18-59 years of age completed the study. Participants (n=22) completed two isocaloric exercise trials (HIW and LGJ) ten minutes in duration. EMG data was obtained from the Bicep Femoris (BF), Glute (GT), Lateral Gastrocnemius (LG), Tibialis Anterior (TA), Vastus Lateralis (VL), Anterior Deltoid (AD), Erector Spinae (ES) and Soleus (SOL). Axial acceleration was determined by IMU data from the shank. Results: When subjects were matched at isocaloric intensities between LGJ and HIW, mean peak axial acceleration was significantly higher in the run than in the walk (p<.001). Peak EMG activation was significantly greater during LGJ in BF (p=.02), GT (p=.01), LG (p=.006), TA (p=.001), VL (p=.003) when compared to HIW. ES and SOL peak EMG activation did not differ between trials. Conclusion: Isocaloric LGJ results in predominantly greater peak muscle activation and an increase in axial acceleration.
The primary aim of the International Journal of Exercise Science (IJES) is to engage undergraduate and graduate students in scholarly activity as authors and reviewers as they develop into professionals. The scope of the journal includes...
View More
Topics in Exercise Science and Kinesiology is a new method of disseminating knowledge in the area of kinesiology and exercise science. The field of kinesiology has a number of scientific-based journals, but a relative dearth of...
View More
Welcome to the ICSK sponsored Student Research Week! We are excited that you want to engage in continuing your education with leaders in our field. We have many opportunities for professionals and students to participate in this virtual...
View More
