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Morphological analysis, isometric peak torque and rate of torque development of hip muscles and their relations with the kinematics and kinetics of the lower limb, pelvis and trunk in women with and without patellofemoral pain

Grant number: 15/01704-7
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): October 01, 2015
Effective date (End): February 28, 2018
Field of knowledge:Health Sciences - Physiotherapy and Occupational Therapy
Principal Investigator:Fábio Viadanna Serrão
Grantee:Guilherme Silva Nunes
Host Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):16/09438-7 - The effect of foot orthotics on biomechanics of lower limbs, pelvis and trunk during single legged squats of individuals with and without patellofemoral pain, BE.EP.DR


Although the etiology of patellofemoral pain (PFP) is not yet fully understood, recently factors proximal to the knee joint, such as the weakness of the extensor and abductor hip muscles, have been linked to the PFP. While studies show that subjects with PFP have weakness of the hip muscles, the possible causes of this weakness have not been studied, such as muscle atrophy. In addition to muscle strength, other elements of muscle function, such as rate of force (torque) development, they may be related to PFP. Finally, it is unclear whether the strength and rate of force development of the hip muscles are related to kinematics of the trunk, pelvis and lower limb and lower limb kinetics (joint moments and patellofemoral stress) in subjects with PFP. Thus, the main objectives of this study are to compare the thickness of the gluteus medium and maximum muscles between women with and without PFP; to compare rate of force development of the abductor and extensor muscles of the hip among women with and without PFP; to evaluate the relationship of the maximum isometric torque and rate of force development of the abductor and extensor muscles of the hip with the kinematics of the hip, knee, pelvis and trunk and the kinetics of the lower limb (hip and knee moments, and the patellofemoral stress) during the single-leg squat. Participate in the study 70 women, aged between 18 and 35 years, divided into two groups: group with PFP (n = 35) and control group (n = 35). The thickness and the non-contractile tissue content are measured by means of ultrasound. The lower limb kinematics, pelvis and trunk and lower limb kinetics will be evaluated during single-leg squat using Qualisys system and a Bertec force plate. The maximum isometric torque and the rate of force development will be measured in isokinetic dynamometer Biodex System 3. Multivariate analysis of variance tests will be used to compare the variables measured between groups and correlation statistical tests will be used to assess the relationship between the variables independent and dependent. (AU)

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Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
NUNES, GUILHERME S.; SILVA, RODRIGO SCATTONE; DOS SANTOS, ANA FLAVIA; FERNANDES, RICARDO A. S.; SERRAO, FABIO VIADANNA; DE NORONHA, MARCOS. Methods to assess patellofemoral joint stress: A systematic review. GAIT & POSTURE, v. 61, p. 188-196, . (16/09438-7, 15/01704-7)
NUNES, GUILHERME S.; BARTON, CHRISTIAN JOHN; SERRAO, FABIO VIADANNA. Hip rate of force development and strength are impaired in females with patellofemoral pain without signs of altered gluteus medius and maximus morphology. JOURNAL OF SCIENCE AND MEDICINE IN SPORT, v. 21, n. 2, p. 123-128, . (16/09438-7, 15/01704-7)
NUNES, GUILHERME S.; BARTON, CHRISTIAN J.; SERRAO, FABIO V.. Impaired Knee Muscle Capacity Is Correlated With Impaired Sagittal Kinematics During Jump Landing in Women With Patellofemoral Pain. JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, v. 36, n. 5, p. 7-pg., . (15/01704-7, 16/09438-7)
NUNES, GUILHERME S.; BARTON, CHRISTIAN JOHN; SERRAO, FABIO VIADANNA. Females with patellofemoral pain have impaired impact absorption during a single-legged drop vertical jump. GAIT & POSTURE, v. 68, p. 346-351, . (16/09438-7, 15/01704-7)
NUNES, GUILHERME S.; WOLF, DEBORA FARIA; DOS SANTOS, DANIEL AUGUSTO; DE NORONHA, MARCOS; SERRAO, FABIO VIADANNA. Acute Effects of Hip Mobilization With Movement Technique on Pain and Biomechanics in Females With Patellofemoral Pain: A Randomized, Placebo-Controlled Trial. JOURNAL OF SPORT REHABILITATION, v. 29, n. 6, p. 707-715, . (15/15391-0, 15/01704-7)

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