Sports-Exercise Medicine & Sciences: Lifestyle & Performance Medicine, Dept. of Physiology, IMS, BHU
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About Sports-Exercise Medicine & Sciences: Lifestyle & Performance Medicine, Dept. of Physiology, IMS, BHU
Sports-Exercise Medicine & Sciences: Lifestyle & Performance Medicine (Health & Physiological Medicine: Clinical & Interventional Physiology), Department of Physiology, Institute of Medical Sciences (IMS), Banaras Hindu University (BHU), Varanasi, U.P., India.
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Drop jump
@Jo Clubb Countermovement jump by squat jump
https://www.facebook.com/share/p/19Pam6poz8/
Fig. Patellofemoral joint stress profiles of the 3 exercises evaluated in the current study. *Significant difference from EXT-VR. †Significant difference from EXT-CR. Abbreviations: EXT-CR, knee extension with constant resistance; EXT-VR, knee extension with variable resistance. 3 exercises 👇 "Ten healthy subjects participated in a study in which their lower extremity kinematics, kinetics, and electromyography of the knee musculature were obtained during a weight-bearing squatting exercise and 2 non-weight-bearing knee extension exercises: (1) knee extension with variable resistance, and (2) knee extension with constant resistance. A previously described biomechanical model was used to estimate PFJ stress at 0°, 15°, 30°, 45°, 60°, 75°, and 90° of knee flexion. PFJ stress was compared among the 3 exercises using a 2-way analysis of variance with repeated measures. Compared to the 2 non-weight-bearing exercises, the squat exercise produced significantly higher PFJ stress at 90°, 75°, and 60° of knee flexion. Conversely, the 2 non-weight-bearing exercises produced significantly higher PFJ stress at 30°, 15°, and 0° of knee flexion when compared to the squat exercise. The knee-extension-with-variable-resistance exercise produced significantly lower PFJ stress than the knee-extension-with-constant-resistance exercise at 90°, 75°, and 60° of knee flexion. To minimize PFJ stress while performing quadriceps exercises, the above data suggest that the squat exercise should be performed from 45° to 0° of knee flexion and the knee-extension-with-variable-resistance exercise should be performed from 90° to 45° of knee flexion [The subjects are all normal healthy, so for those with PF pain syndrome or knee arthritis, once need to apply this finding wisely with scientific reasoning] https://www.facebook.com/share/p/1F4KDhCd6E/
Counter movement jump
"...Clinical guidelines for persons with PFP (Patellofemoral pain) advocate for hip and knee extensor strengthening. During the acute phase of the rehabilitation process, hip biased squats should be considered to reduce the demand on the quadriceps. This is important as quadriceps force contributes directly to patellofemoral joint reaction force and patellofemoral joint stress. During the sub-acute or recovery phase, squats can be progressed as tolerated to be more neutral biased or even quadriceps biased by modifying the trunk-tibia relationship..... During the acute phase, gluteus maximus activation should be emphasized as this muscle controls hip adduction and internal rotation, motions known to contribute to patellofemoral joint stress and PFP. Increased gluteus maximus activation can be achieved through the use of wider stance squats as well as external band resistance around the thighs. However, a squat stance that exceeds 150% shoulder width may result in elevated knee valgus moments. During the sub-acute or recovery phase, transitioning to more narrow/medium stance squats will promote greater tibial inclination and a quadriceps bias. Regardless of phase, a toe out position should be considered as this will result in a decrease in the knee valgus moment..... Another important consideration for the patient with patellofemoral pain is squat depth. Patellofemoral joint stress steadily increases from partial to medium depth squatting (0° to 90°). The increase in patellofemoral joint stress is the result of a steadily increasing patellofemoral joint reaction force that is more pronounced than the increase in contact area as the knee flexes. Generally speaking, shallow-medium depth squats should be prescribed for the patient with patellofemoral pain to minimize joint stress. Furthermore, there is evidence that shallow squats may be more desirable for gluteus maximus activation compared to deep squats...." "......The squat can be a safe and effective exercise if properly executed for both rehabilitation and sport performance purposes. However, selection of specific squatting parameters requires a thorough understanding of their impact on muscle activity and joint loading. It is important for clinicians to prescribe appropriate squatting parameters based on the individual needs of the patient to maximize the effectiveness of the exercise. Many research works are being done to establish the appropriateness and effectiveness of squat exercise for patients with various musculoskeletal conditions..." https://www.facebook.com/share/p/19Pam6poz8/
@ Jo Clubb
A total of 13 talented players from Manipur proudly represented the nation at the Moscow Wushu Star Championship, making a significant contribution to Team India's outstanding performance. Team India clinched an impressive 9 Gold, 11 Silver and 7 Bronze medals at the prestigious international event. Heartiest congratulations to all the players, especially our Manipuri athletes, for showcasing excellence and bringing glory to the state and the country on the global stage. #GovernmentOfManipur #
@Dr.C.Burgess 👍 or 👎
Squat Jump
