Analysis of Different Hip Adductors Exercises

2019-09-30 07:07:15 | BioPortfolio


Groin injuries present a major problem in sports due to its high frequency, long-lasting symptoms and high risk of re-injury. The most common groin injury is the adductor strain (around two thirds of all groin injuries), while the biggest risk factors are previous injury and lower hip adductors strength. The purpose of this study is to present and biomechanically evaluate several new strengthening exercises targeting hip adductors. Exercises will be performed with the use of our novelty device, which enables eccentric strengthening of the hip adductors in different hip and knee positions. We hypothesize that performing modified hip adductors exercises using the novelty device could enable participants to perform hip adduction throughout larger ROM during eccentric contractions, while changing hip and/or knee angle will differently affect muscle activity and produced joint torques. The latter could be helpful for preventive or rehabilitative training for hip adductors strain injuries, in which therapists want to target specific hip adductor muscle.


Following the general warm-up (light aerobic activity, dynamic stretching exercises and bodyweight strength exercises), the electromyographic (EMG) sensors and kinematic markers will be attached to the participant, who will then perform the maximal voluntary contractions for the purpose of EMG normalization. Then the participant will perform new hip adductor exercises using the novelty device, which enables hip adduction eccentric contractions in different hip and knee positions. The latter is important when trying to target specific hip adductor muscle, since different hip and/or knee angles differently affect individual muscle activity and joint torques. Exercises will be performed in randomized order, while the EMG and kinematic signals will be synchronously captured. EMG muscle activity and joint torques, produced during the exercises, will be analysed. Descriptive statistics will be calculated and reported as mean ± standard deviation. Shapiro-Wilk test will be used for testing of normality and Levene's test for equality of variances. Differences among corresponding variables will be obtained from different exercises and tested with the analysis of the variance for repeated measurements. For pair-wise comparisons, paired 2-tailed post-hoc t-tests with Bonferroni's correction will be used. The level of statistical significance will be set at p < 0.05.

Study Design


Injury of Hip and Thigh


Hip adductors exercise variations


Faculty of Health Sciences


Not yet recruiting


University of Primorska

Results (where available)

View Results


Published on BioPortfolio: 2019-09-30T07:07:15-0400

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The exercise capacity of an individual as measured by endurance (maximal exercise duration and/or maximal attained work load) during an EXERCISE TEST.

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A slender and most superficial muscle in the inner THIGH which originates at the ramus of the PUBIC BONE near the PUBIC SYMPHYSIS and inserts at the proximal medial TIBIA. Its function is to abduct thigh, flex knee, and rotate leg medially. It is a common source of a MYOCUTANEOUS FLAP.

A nerve originating in the lumbar spinal cord (usually L2 to L4) and traveling through the lumbar plexus to provide motor innervation to extensors of the thigh and sensory innervation to parts of the thigh, lower leg, and foot, and to the hip and knee joints.

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