Biomechanical Analysis of Common Strength-Training Exercises
Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Physical activity has always been part of human nature. The human anatomy minimizes energy consumption and enables endurance and strength. Our bodiesare constructed for a life in motion, optimized for our survival. In recent times, the art of survival depends less on our physical ability to move. A more sedentary lifestyle has become the result of the changes made in society over the past decades and the amount of natural physical activity has become less. To compensate for the absence of activity, forced physical activity, training, has evolved in popularity. With a growing resistance training and fitness trend, focus lies on forcing our bodies into work. But, when attempting to replace natural exercise with forced movement and added weights, technique could suddenly become an important factor. This study was aimed to focus on the mechanical aspects of training, looking at squats and lunges to compare how dierent techniques affect the resulting muscle forces.
By tracking reflective body markers and measuring forces with force platforms, data for the dffierent exercises was obtained. Using software specialized within the musculoskeletal field enabled analysis of the data and computation of the muscle forces. In this study, focus lay on the muscle forces in the quadriceps muscle group and the sartorius muscle.
The computed forces showed no direct force dierence when letting the knees and feet point in the same direction, regardless of internal or external rotation of the knees in relation to the hips and feet. The largest force dierences occurred in exercises with little stability and when balance was lost.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:kth:diva-168089OAI: oai:DiVA.org:kth-168089DiVA: diva2:814324
Gutierrez Farewik, Elena, Lecturer