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- W2807396323 abstract "Changes in cortical activity are hypothesized to be related to the high incidence of ACL re-ruptures. Presumably, these differences are a result of the loss of somatosensory signals of the ligament and changes in nociceptor activity due to pain and swelling. PURPOSE: To investigate the differences in electrocortical activity between patients with an ACL-reconstruction and healthy controls. METHODS: 12 patients one year post ACL-reconstruction and 12 healthy controls were compared during the execution of functional hop tests and a force-reproduction task (without visual feedback and with visual disruption) at biomechanical function (force reproduction and EMG (Root-Mean-Square)) and electrocortical activity using a EEG power analysis (Alpha-1, Alpha-2, Beta-1 and Theta-activity frequency bands were determined). Between-group differences and differences between the study condition without visual feedback and the study condition with visual disruption were examined. RESULTS: No differences in functional outcomes and biomechanical function (p≥0.194) exist between ACL reconstructed patients and healthy controls. However, ACL reconstructed patients showed a significant higher Theta-power in the parietal cortex (p≤0.038) and pre-frontal cortex (F8, p=0.038) compared to healthy controls during force reproduction without visual feedback. Visual disruption leads to higher power values at Fz (Alpha-1: p=0.050, Beta-1: p=0.010, Theta: p=0.050), F8 (Beta-1: p=0.034), P3 (Alpha-1: p=0.023, Beta-1: p=0.002, Theta: p=0.034), P4 (Alpha-2: p=0.041, Beta-1: p=0.019) and P7 (Alpha-2: p=0.006) in the healthy control group, while in the ACL reconstructed group only Alpha-2 power at T4 was significantly higher (p=0.050). CONCLUSIONS: Differences in electrocortical activity seem to be present in patients one year after ACL-reconstruction, while patients in both groups tended to be equal in terms of biomechanical function. In line with previous research of Baumeister et al. (2011) ACL reconstructed patients probably more rely on their visual system for an adequate planning and control of motion. This could be a compensation mechanism for the loss of sensory input out of the affected ACL and could be a point of therapeutic entry in the prevention of re-ruptures in the future." @default.
- W2807396323 created "2018-06-13" @default.
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- W2807396323 date "2018-05-01" @default.
- W2807396323 modified "2023-09-26" @default.
- W2807396323 title "Differences In Electrocortical Activity Between ACL-reconstructed Patients And Healthy Controls During A Force- Reproduction Task" @default.
- W2807396323 doi "https://doi.org/10.1249/01.mss.0000535218.18852.bc" @default.
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