Rui Torres1, João Ferreira, Diogo Silva, Elisa Rodrigues, Isabel M Bessa, Fernando Ribeiro. 1. *CESPU, Department of Physiotherapy, North Polytechnic Institute of Health, Paredes, Portugal; †CEMAH, Activity and Human Movement Study Center, Polytechnic Institute of Oporto, Oporto, Portugal; ‡Department of Physiotherapy, High School for Allied Health Technologies of Oporto, Polytechnic Institute of Oporto, Oporto, Portugal; §School of Health Sciences and Institute of Biomedicine - iBiMED, University of Aveiro, Aveiro, Portugal.
Abstract
OBJECTIVE: To determine whether high-level athletes with patellar tendinopathy have diminished knee proprioceptive acuity. DESIGN: Cross-sectional study. SETTING: University research laboratory (institutional). PARTICIPANTS: Twenty-one basketball and volleyball players with patellar tendinopathy (13 men and 8 women; mean age 24.5 ± 3.6; body mass index = 22.5 ± 2.0 kg/m) and an equal number of athletes without symptoms of patellar tendinopathy injury were included in this study. ASSESSMENTS: Participants underwent knee proprioception assessments on a single day. Furthermore, age, sex, height, weight, VISA-P (Victorian Institute of Sport Assessment) questionnaire sports participation, medical history, knee injuries, previous treatment, and medication were obtained. MAIN OUTCOME MEASURES: Knee proprioception was evaluated by assessing sense of resistance, using a weight discrimination protocol, and joint position sense (JPS). RESULTS: No significant differences were observed in JPS at 30 and 60 degrees of knee flexion between groups (P = 0.165 and 0.481, respectively). In regard to the ability to discriminate weight, significant differences between the 2 groups were found with the tendinopathy group showing a higher percentage of error (P = 0.009), namely when the set of incremental weights varied by 10% from the standard weight. CONCLUSIONS: Athletes with patellar tendinopathy have a diminished perception of force signals required for weight discrimination, whereas JPS remains unaffected in these athletes.
OBJECTIVE: To determine whether high-level athletes with patellar tendinopathy have diminished knee proprioceptive acuity. DESIGN: Cross-sectional study. SETTING: University research laboratory (institutional). PARTICIPANTS: Twenty-one basketball and volleyball players with patellar tendinopathy (13 men and 8 women; mean age 24.5 ± 3.6; body mass index = 22.5 ± 2.0 kg/m) and an equal number of athletes without symptoms of patellar tendinopathy injury were included in this study. ASSESSMENTS: Participants underwent knee proprioception assessments on a single day. Furthermore, age, sex, height, weight, VISA-P (Victorian Institute of Sport Assessment) questionnaire sports participation, medical history, knee injuries, previous treatment, and medication were obtained. MAIN OUTCOME MEASURES: Knee proprioception was evaluated by assessing sense of resistance, using a weight discrimination protocol, and joint position sense (JPS). RESULTS: No significant differences were observed in JPS at 30 and 60 degrees of knee flexion between groups (P = 0.165 and 0.481, respectively). In regard to the ability to discriminate weight, significant differences between the 2 groups were found with the tendinopathy group showing a higher percentage of error (P = 0.009), namely when the set of incremental weights varied by 10% from the standard weight. CONCLUSIONS: Athletes with patellar tendinopathy have a diminished perception of force signals required for weight discrimination, whereas JPS remains unaffected in these athletes.
Authors: Lei Zhang; Yi-Kai Li; Ji Qi; Shao-Qun Zhang; Rui-Yue Ping; Xin Zhou; Lin Yu; Rui-Feng Liu; Shi-Jie Fu Journal: Nan Fang Yi Ke Da Xue Xue Bao Date: 2017-09-20
Authors: Andrew L Sprague; Angela H Smith; Patrick Knox; Ryan T Pohlig; Karin Grävare Silbernagel Journal: Br J Sports Med Date: 2018-07-27 Impact factor: 13.800