Force, work and power output of lower limb muscles during human maximal-effort countermovement jumping

Lower limb force, power and performance in skateboarding: an exploratory study

“…In spite of, our results are in accordance with other studies in which knee extensor muscle force was shown to contribute 50% towards the performance of the vertical jump (NAGANO, 2005), while in the present study the correlation was 50.6% for this muscular group in the Ollie maneuver. The force values of the knee and hip extensors of the non-dominant leg presented a lower correlation to the height achieved in the Ollie maneuver, and the knee extensor force values were insignificant.…”

“…This suggests that the force that the athlete applies to the skateboard is greater in the dominant leg and that the hip extensor muscles make a greater contribution to the performance achieved in the Ollie maneuver than the knee extensor muscles. The results obtained for power seem to be in accordance with other studies (BOBBERT et al, 1986;FUKASHIRO;KOMI, 1987;NAGANO, 2005).…”

“…Although some authors have shown that the development of maximum strength in the quadriceps can also contribute to increased muscle power assessed by tests without countermovement jump (YOUNG; JENNER; GRIFFITHS, 1998;NAGANO et al, 2005), the results of this study showed that the dynamic maximum force was not correlated with the height reached in Ollie maneuver. Here, it can be speculated that as it involves the action of several joints, performance during the jump depends on many specific independent interrelated variables, such as motor control, intramuscular coordination, strength levels, the degree of muscle power and the execution technique, among others (WEISS et al, 1997).…”

A Six-Link Kinematic Chain Model of Human Body Using Kane's Method

“…Kane's method has been applied in research into robotic movement [1][2] , modelling surgical repairs of hip joints 3 , and sports fields [4][5] . We construct a two-dimensional six-link kinematic chain model of the human body.…”

Development and Validation of a Three-Dimensional Biomechanical Model of the Lower Extremity

“…Also, the information generated from the gait analysis of patients with total joint replacements has been utilized as a tool for assessing recovery following these procedures, where the key to the analysis of functionality following joint replacement is the ability to identify the adaptations corresponding to the joint design features. It is very difficult to determine muscle force/power output from multiple muscles simultaneously without affecting the pattern of normal movements (Naganoa, et al, 2005). Fortunately, computer modeling can provide useful insights for human biomechanics.…”