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Muscle strength and biomechanics of the lower limb and trunk during stop-jump in subjects with and without patellar tendinopathy

Grant number: 14/10506-1
Support type:Regular Research Grants
Duration: September 01, 2014 - August 31, 2016
Field of knowledge:Health Sciences - Physiotherapy and Occupational Therapy
Principal Investigator:Fábio Viadanna Serrão
Grantee:Fábio Viadanna Serrão
Home Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Assoc. researchers: José Eduardo Mourão Santos ; Theresa Helissa Nakagawa

Abstract

Patellar tendinopathy is a common musculoskeletal dysfunction in athletes and it is considered an important cause for physical disability. Several factors, local and distal to the knee joint, have been related to patellar tendinopathy. However, less attention has been given to verify alterations in the trunk and hip movements in subjects with this dysfunction. Moreover, it is not clear if subjects with patellar tendinopathy present strength deficits or muscle recruitment impairments in the hip and knee muscles in comparison to healthy subjects. Therefore, the purpose of this study is to compare the hip and knee isometric torque and the muscle activation and kinematics of the trunk and lower limb during stop-jumps between subjects with patellar tendinopathy, asymptomatic subjects with patellar tendon ultrasonographic abnormality and healthy controls. Thirty volunteers will be recruited for this study divided into 3 groups: group of subjects with patellar tendinopathy (n=10), group of asymptomatic subjects with patellar tendon ultrasonographic abnormality (n=10) and group of healthy subjects (n=10). The kinematic and electromyographic evaluations will be carried out with the Vicon (Vicon Motion Systems Ltd, Oxford) and Trigno" Wireless EMG (Delsys Inc., Boston, USA) systems, respectively. For measuring hip and knee isometric torque, the Lafayette Manual Muscle Test System (Lafayette Instruments, Lafayette, USA) will be used. For statistical analysis, group comparisons will be carried out with an analysis of variance (one-way ANOVA). The Bonferroni test will be conducted as a follow-up test for the identification of specific differences (alpha = 0,05). (AU)

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)
MARTINEZ, ADALBERTO F.; LESSI, GIOVANNA C.; CARVALHO, CRISTIANO; SERRAO, FABIO V. ASSOCIATION OF HIP AND TRUNK STRENGTH WITH THREE-DIMENSIONAL TRUNK, HIP, AND KNEE KINEMATICS DURING A SINGLE-LEG DROP VERTICAL JUMP. JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, v. 32, n. 7, p. 1902-1908, JUL 2018. Web of Science Citations: 0.
SILVA, RODRIGO SCATTONE; PURDAM, CRAIG R.; FEARON, ANGELA M.; SPRATFORD, WAYNE A.; KENNEALLY-DABROWSKI, CLAIRE; PRESTON, PETER; SERRAO, FABIO V.; GAIDA, JAMES E. Effects of Altering Trunk Position during Landings on Patellar Tendon Force and Pain. MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, v. 49, n. 12, p. 2517-2527, DEC 2017. Web of Science Citations: 5.
LESSI, GIOVANNA CAMPARIS; SERRAO, FABIO VIADANNA. Effects of fatigue on lower limb, pelvis and trunk kinematics and lower limb muscle activity during single-leg landing after anterior cruciate ligament reconstruction. KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, v. 25, n. 8, p. 2550-2558, AUG 2017. Web of Science Citations: 4.
LESSI, GIOVANNA CAMPARIS; DOS SANTOS, ANA FLAVIA; BATISTA, LUIS FYLIPE; DE OLIVEIRA, GABRIELA CLEMENTE; SERRAO, FABIO VIADANNA. Effects of fatigue on lower limb, pelvis and trunk kinematics and muscle activation: Gender differences. JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, v. 32, p. 9-14, FEB 2017. Web of Science Citations: 10.
SILVA, RODRIGO SCATTONE; NAKAGAWA, THERESA H.; FERREIRA, ANA LUISA G.; GARCIA, LUCCAS C.; SANTOS, JOSE E. M.; SERRAO, FABIO V. Lower limb strength and flexibility in athletes with and without patellar tendinopathy. PHYSICAL THERAPY IN SPORT, v. 20, p. 19-25, JUL 2016. Web of Science Citations: 20.

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