| Autor: |
Garza-Borjón AE; Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey 64700, Mexico.; Institute of Orthopedics and Traumatology, Tecnológico de Monterrey, San Pedro Garza García 66278, Mexico., González-González M; Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey 64700, Mexico., de la Garza-Salazar JF; Institute of Orthopedics and Traumatology, Tecnológico de Monterrey, San Pedro Garza García 66278, Mexico., Simental-Mendía M; Service of Orthopedics and Traumatology, Hospital Universitario 'Dr. José E. González', Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico., Acosta-Olivo C; Institute of Orthopedics and Traumatology, Tecnológico de Monterrey, San Pedro Garza García 66278, Mexico.; Service of Orthopedics and Traumatology, Hospital Universitario 'Dr. José E. González', Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico. |
| Abstrakt: |
Background and Objectives: Patellofemoral pain (PFP) is frequent in the young and active population. The effect of muscle strength in the lower extremities after aerobic activity in patients with this condition has yet to be detailed. Our objective was to determine if patients with PFP show alterations in lower extremity muscle strength measurements after performing a session of ten minutes of aerobic activity on a treadmill compared to people without patellofemoral pain. Materials and Methods: We conducted a prospective experimental study with a stratified, non-randomized, and non-blinded population sample with group matching, including an experimental group with PFP and a control group with no pain. Subjects completed self-reported functional questionnaires (IKDC, Kujala, KOOS, SF-12), underwent radiographic studies, and were evaluated by measuring the strength of hip and knee muscles and the Single-Leg Triple-Hop (SLTH) test before and after ten minutes of exercise on a treadmill. Results: Seventeen subjects diagnosed with PFP and seventeen control subjects were evaluated. Both groups were homogeneous and had no significant differences in the demographic variables. A wider sulcus angle at 30° (136.8 ± 3.8° vs. 132.5 ± 5.6°, p = 0.0140), a decrease strength post-exercise in the hip abductor (37.9 ± 7.1 N⋅m vs. 45.6 ± 7.7 N⋅m, p < 0.05) and knee extensor (36.0 ± 9.1 N⋅m vs. 47.7 ± 14.0 N⋅m, p < 0.05), and a shorter distance in the SLTH test (337.9 ± 74.9 cm vs. 438.6 ± 65.8 cm, p < 0.01) was recorded in subjects with patellofemoral pain. Conclusions: Subjects with PFP had an overall lower strength of hip and knee muscles, showing significant differences in the hip abductors and knee extensors between people with PFP and healthy matched controls after aerobic exercise. |
