Comparison of hip muscles activity in subjects with and without patellofemoral pain syndrome
Poster Presentation
Paper ID : 1845-SSRC
Authors
fateme zare 1 , mohammad karimizadeh ardakani2 , yousof moghaddas tabrizi2 , Hooman Minoonejad3 , hamid abbasi bafghi4
1دانشجو دکتری دانشگاه تهران
2دانشگاه تهران
3گروه بهداشت و طب ورزشی دانشکده تربیت بدنی دانشگاه تهران
4دانشگاه یزد
Abstract
Purpose/Background: Patellofemoral pain syndrome (PFPS) is one of the most common lower limb disorders causing pain and dysfunction. Recent studies have suggested an association between hip muscle weakness and PFPS. Altered neuromuscular activity in the hip may also contribute to PFPS. The purpose of this study was to compare hip muscle activity in subjects with and without patellofemoral pain syndrome
Methods: In this comparative study, 11 women with PFPS and 10 healthy subjects who were matched for age and BMI selected in the study. Electromyographic (EMG) measurements of gluteus maximus and gluteus medius activation during stepping up and down were recorded. For analyzing the data and comparing the groups, independent sample t-test was used. All analyzes were performed using SPSS software version 25 and at significance level of α = 0.5.
Results: The results showed that during stepping up, the activity of the gluteus maximus muscle was significantly higher in PFPS subjects (t19, 10.86 = 3.34, p = 0.007). However in stepping down there was no significant differences between two groups. In contrast the activity of the gluteus medius muscle during stepping down, was significantly lower in subjects with patellofemoral pain syndrome (t19, 9.79 = 7.40, p < 0.001). Activity of the gluteus medius muscle in stepping up were not differences between the groups.
Conclusion: The activity of the gluteus maximus muscle in stepping up is greater and the activity of the gluteus medius muscle in stepping down was lower in women with patellofemoral pain syndrome. In order to improve the movement pattern, hip exercises should therefore be included in the rehabilitation program alongside knee exercises. The hip muscle, including the gluteus maximus and gluteus medius, plays an important role in the development of the movement pattern and needs to be further researched before and during the treatment of PFPS.
Methods: In this comparative study, 11 women with PFPS and 10 healthy subjects who were matched for age and BMI selected in the study. Electromyographic (EMG) measurements of gluteus maximus and gluteus medius activation during stepping up and down were recorded. For analyzing the data and comparing the groups, independent sample t-test was used. All analyzes were performed using SPSS software version 25 and at significance level of α = 0.5.
Results: The results showed that during stepping up, the activity of the gluteus maximus muscle was significantly higher in PFPS subjects (t19, 10.86 = 3.34, p = 0.007). However in stepping down there was no significant differences between two groups. In contrast the activity of the gluteus medius muscle during stepping down, was significantly lower in subjects with patellofemoral pain syndrome (t19, 9.79 = 7.40, p < 0.001). Activity of the gluteus medius muscle in stepping up were not differences between the groups.
Conclusion: The activity of the gluteus maximus muscle in stepping up is greater and the activity of the gluteus medius muscle in stepping down was lower in women with patellofemoral pain syndrome. In order to improve the movement pattern, hip exercises should therefore be included in the rehabilitation program alongside knee exercises. The hip muscle, including the gluteus maximus and gluteus medius, plays an important role in the development of the movement pattern and needs to be further researched before and during the treatment of PFPS.
Keywords