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280 results on '"Georgoulis, Anastasios D."'

1. ACL Augmentation

Author

Ochi, Mitsuo, Georgoulis, Anastasios D., Nakamae, Atsuo, Nakamura, Norimasa, editor, Zaffagnini, Stefano, editor, Marx, Robert G., editor, and Musahl, Volker, editor

Published
2017
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2. Effect of laterality and fatigue in peroneal electromechanical delay

Author

Flevas Dimitrios A., Pappas Evangelos, Ristanis Stavros, Giakas Giannis, Vekris Marios, and Georgoulis Anastasios D.

Subjects
iii, Orthopedic surgery, RD701-811
Abstract

Introduction: Extremity dominance is one of the intrinsic factors that have been identified for ankle sprains. Electromechanical delay (EMD) is an integral part of the peroneal motor response and, therefore, substantial in preventing ankle sprains. This study aimed to investigate the effect of laterality on EMD times before and after fatigue. Methods: Fifteen healthy male volunteers participated in the study. Measurements were taken with the ankle in a neutral (0°) position, and all subjects followed an isokinetic fatigue protocol. Repeated ANOVA was used for statistical analysis, and the α level was set a priori at p ≤ 0.05. Results: No significant difference was noted in EMD times between the dominant and non-dominant legs of the volunteers (p = 0.940). Fatigue caused a significant increase in EMD by 10–15 ms (p = 0.003), while the leg × fatigue interaction was not significant (p = 0.893). Conclusions: In a non-injured athlete, both ankles seem to be under the same protection of the reactive response of the peroneal muscles. Therefore, athletes should be aware that both their extremities are equally exposed to the danger of an ankle injury. Also, fatigued ankles demonstrate longer EMD times, implying that improving resistance to fatigue may add another layer of protection that has the potential to prevent ankle sprain recurrence.

Published
2022
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24. Electromechanical delay of the knee flexor muscle is impaired after harvesting hamstring tendons for anterior cruciate ligament reconstruction

Author

Ristanis, Stavros, Tsepis, Elias, Giotis, Dimitrios, Stergiou, Nicholas, Cerulli, Guiliano, and Georgoulis, Anastasios D.

Subjects
Knee -- Physiological aspects, Knee -- Research, Orthopedic surgery -- Research, Hamstring muscles -- Physiological aspects, Hamstring muscles -- Research, Joints -- Range of motion, Joints -- Research, Health, Sports and fitness
Published
2009

48. Thigh muscle weakness in ACL-deficient knees persists without structured rehabilitation

Author

Tsepis, Elias Vagenas, George Ristanis, Stavros Georgoulis, Anastasios D.

Abstract

We evaluated whether quadriceps and hamstrings weakness depended on chronicity in amateur athletes with anterior cruciate ligament deficiencies. We hypothesized that the weakness would not recover to the level of healthy control subjects without structured rehabilitation. Secondarily, we asked whether quadriceps and hamstrings side-to-side percent asymmetry in strength was consistent at different stages of, chronicity. Thirty-six male amateur athletes forming equal groups of short, intermediate, and long chronicity (mean, 4, 12, and 56 months, respectively) were tested isokinetically against control subjects at 60 degrees per second. Weakness was. substantial in both muscle groups and at all times ranging from 32% to 21% compared with the control subjects. However, side-to-side deficits revealed a linear trend of lessening with time. The quadriceps had greater side-to-side asymmetry that ranged from 23% to 10%, whereas the hamstrings asymmetry ranged from 14% to almost 0%. Acquiring symmetric strength earlier than 1 year after injury only occurred in the hamstrings. It can be inferred that participation in organized rehabilitation would minimize the detrimental effects of anterior cruciate ligament rupture on thigh muscle, strength.

Published
2006

49. Authors' Reply

Author

Georgoulis, Anastasios D., primary, Triantafyllidi, Eleni, additional, and Paschos, Nikolaos K., additional

Published
2014
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