• Muslim khan
• Abdulkarim Muteb Alshammari, Nadia Ahmed Abo Shreea
• Mohammed Abdullah alamri
• Rakan Abdullah Alwabel,
• Amal Saleem Al Dalhan,Alanoud Othman K Almasoudi

Abstract Introduction; Strengthening exercise is routinely used to maximize muscular power and endurance and reduce muscle imbalance and joint injuries in musculoskeletal patients and athletes. Isometric exercise has been shown to rapidly increase quadriceps muscle strength. Objective; This study compared the effects of isometric strengthening exercise on quadriceps muscle strength at different angles of the knee joint between treatment and experimental groups of healthy adult participants and examined its effectiveness at the 450-900 angle. Methodology; Connivance sampling selected 40 Institute adults for the study. Participants were randomly assigned to the Control (N=20) and Treatment (N=20) groups based on inclusion criteria. The control group squatted while the treatment group did isometric strengthening for eight weeks. Before and after treatment, knee quadriceps muscle strength was measured at 450-900. Result; This pre-to-post experimental study showed a statistically significant increase in quadriceps muscle strength at the 45-90 knee joint with a P0.0001 value, while the control group showed no such effect with P0.083 and P0.055, respectively. The experimental group significantly strengthened quadriceps at 45 knee joints compared to the control group. (P 0.0001). Conclusion; Isometric exercises can strengthen the quadriceps at the 450-900 knee angle in healthy adults. The quadriceps' 90-degree strength has increased more than 450-degree strength. Keywords; Muscle strength, muscle imbalance, Quadriceps strength, Isometric exercise, squatting exercise, multi-angle exercise

Muscle strength, muscle imbalance, Quadriceps strength, Isometric exercise, squatting exercise, multi-angle exercise

"The Effects of Isometric Quadriceps Exercise at Different Angles in Healthy Adult Knee The Effects of Isometric Quadriceps Exercise at Different Angles in Healthy Adult Knee", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 8, page no.b664-b670, August-2023, Available :http://www.jetir.org/papers/JETIR2308181.pdf

"The Effects of Isometric Quadriceps Exercise at Different Angles in Healthy Adult Knee The Effects of Isometric Quadriceps Exercise at Different Angles in Healthy Adult Knee", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 8, page no. ppb664-b670, August-2023, Available at : http://www.jetir.org/papers/JETIR2308181.pdf