Graduation Date
Spring 2024
Document Type
Thesis
Program
Master of Science degree with a major in Kinesiology, option Exercise Science
Committee Chair Name
Dr. Eli Lankford
Committee Chair Affiliation
Cal Poly Humboldt Faculty or Staff
Second Committee Member Name
Dr. Jill Anderson
Second Committee Member Affiliation
Cal Poly Humboldt Faculty or Staff
Third Committee Member Name
Dr. Lex Gidley
Keywords
Isocaloric, Gait, Hiking, Lunge, Lower limb accelerations
Subject Categories
Kinesiology
Abstract
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 18-31 completed the study. Participants (n=19) completed two isocaloric exercise trials (HIW and LGJ), each ten minutes in duration. EMG data was obtained from the Bicep Femoris (BF), Gluteus Maximus (GM), Lateral Gastrocnemius (LG), Tibialis Anterior (TA), Vastus Lateralis (VL), Anterior Deltoid (AD), Erector Spinae (ES) and Soleus (SOL). Resultant accelerations on the foot and sacrum were measured by IMU.
Results: When subjects were matched at isocaloric intensities between LGJ and HIW, the mean peak resultant acceleration was significantly higher in the LGJ than HIW for the foot (22.14 ± 8.44 m/s²) and sacrum (27.21 ± 7.92 m/s²). Peak EMG activation was significantly greater during LGJ in TA (40.9% ± 21.4), AD (21.9% ± 7.8), and VL (52.6% ± 39.8) when compared to HIW. The area under the curve was significantly greater in the LGJ for the TA (13.8% ± 5.0) and AD (1.4% ± 0.7) than HIW. Conclusion: Both activities burned the same amount of energy, but LGJ increased lower body muscles' peak activation and force with higher resultant accelerations of the foot and sacrum.
Citation Style
APA
Recommended Citation
Krieger, Taj, "Accelerations and EMG differences between isocaloric high-incline walking and level grade jogging" (2024). Cal Poly Humboldt theses and projects. 750.
https://digitalcommons.humboldt.edu/etd/750