TY - JOUR AU - Hegedüs, Ádám AU - Kopper, Bence TI - A motoros egységek aktivitásának változása a biceps brachii izomban különböző intenzitású izometriás terhelések hatására [Changes in motor unit activity in the biceps brachii muscle under different intensities of isometric loading] JF - ORVOSI HETILAP J2 - ORV HETIL VL - 164 PY - 2023 IS - 10 SP - 376 EP - 382 PG - 7 SN - 0030-6002 DO - 10.1556/650.2023.32721 UR - https://m2.mtmt.hu/api/publication/33856626 ID - 33856626 AB - Introduction: In patients with cancer, loss of muscle mass is observed in many cases and tumour types. This can lead to a drastic deterioration in the patient's quality of life, with the inability to support themselves. Nowadays, in addi-tion to primary treatment of the tumour, physical training of patients has become a priority in order to maintain their quality of life. One key to this is resistance training to prevent sudden muscle loss, which the patient can do alongside primary treatment, and isometric training may be one option.Objective: Our aim was to measure the activation frequency characteristics of the biceps brachii muscle in our subjects during a fatigue protocol while creating a constant controlled isometric tension in the muscle.Method: 19 healthy university students participated in our study. After determining the dominant side, the subjects' single repetition maximum was assessed using the GymAware RS tool and then 65% and 85% of this was calculated. We placed electrodes on the biceps brachii muscle and had them hold the weight at 65% and 85% until full fatigue. Immediately afterwards, subjects performed an isometric maximal contraction (Imax). The measured electromyogra-phy recordings were divided into 3 equal parts, then the first, middle and last 3 s (W1, W2, W3) were analyzed.Results: Our results show that, consistent with fatigue, at both 1RM 65% and 1RM 85% load, the activity of the low -frequency motor units increases, while the activation of the high-frequency motor units decreases.Discussion: The present study is consistent with our previous study.Conclusion: Our test protocol is not suitable for prolonged activation of high-frequency motor units because the activity of high-frequency motor units decreases over time. LA - Hungarian DB - MTMT ER - TY - JOUR AU - Sonkodi, Balázs AU - Hegedüs, Ádám AU - Kopper, Bence AU - Berkes, István TI - Significantly Delayed Medium-Latency Response of the Stretch Reflex in Delayed-Onset Muscle Soreness of the Quadriceps Femoris Muscles Is Indicative of Sensory Neuronal Microdamage JF - JOURNAL OF FUNCTIONAL MORPHOLOGY AND KINESIOLOGY J2 - J FUNCT MORPH KINES VL - 7 PY - 2022 IS - 2 SN - 2411-5142 DO - 10.3390/jfmk7020043 UR - https://m2.mtmt.hu/api/publication/32863029 ID - 32863029 N1 - Hungary-TE-KEB/26/2021 LA - English DB - MTMT ER - TY - JOUR AU - Soldos, Péter AU - Besenyi, Zsuzsanna AU - Hideghéty, Katalin AU - Pávics, László AU - Hegedüs, Ádám AU - Rácz, Levente AU - Kopper, Bence TI - Comparison of Shear Wave Elastography and Dynamometer Test in Muscle Tissue Characterization for Potential Medical and Sport Application JF - PATHOLOGY AND ONCOLOGY RESEARCH J2 - PATHOL ONCOL RES VL - 27 PY - 2021 PG - 11 SN - 1219-4956 DO - 10.3389/pore.2021.1609798 UR - https://m2.mtmt.hu/api/publication/32086484 ID - 32086484 LA - English DB - MTMT ER - TY - CONF AU - Soldos, Péter AU - Hegedüs, Ádám AU - Rácz, Levente AU - Besenyi, Zsuzsanna AU - Pávics, László AU - Hideghéty, Katalin AU - Kopper, Bence TI - Shear wave elasztográfia és a dinamométeres vizsgálatok eredményei közötti kapcsolatok elit sportolók erőképességeinek függvényében T2 - V. Sporttudományi PHD Szimpózium, Program- és absztraktfüzet PB - Testnevelési Egyetem C1 - Budapest PY - 2020 SP - 56 EP - 56 PG - 1 UR - https://m2.mtmt.hu/api/publication/31604461 ID - 31604461 LA - Hungarian DB - MTMT ER - TY - CONF AU - Hegedüs, Ádám AU - Kopper, Bence TI - Izomaktiváció a könyökhajlító izmokban fáradás alatt 40 és 80%-os terhelésen pilot mérések T2 - V. Sporttudományi PHD Szimpózium, Program- és absztraktfüzet PB - Testnevelési Egyetem C1 - Budapest PY - 2020 SP - 32 EP - 32 PG - 1 UR - https://m2.mtmt.hu/api/publication/31604314 ID - 31604314 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hegedüs, Ádám AU - Trzaskoma, Lukasz AU - Soldos, Péter AU - Tuza, Kornélia AU - Katona, Péter AU - Greger, Zsolt AU - Zsarnóczky-Dulházi, Fanni AU - Kopper, Bence TI - Adaptation of Fatigue Affected Changes in Muscle EMG Frequency Characteristics for the Determination of Training Load in Physical Therapy for Cancer Patients JF - PATHOLOGY AND ONCOLOGY RESEARCH J2 - PATHOL ONCOL RES VL - 26 PY - 2020 IS - 2 SP - 1129 EP - 1135 PG - 7 SN - 1219-4956 DO - 10.1007/s12253-019-00668-3 UR - https://m2.mtmt.hu/api/publication/30712590 ID - 30712590 N1 - Published: 29 May 2019 LA - English DB - MTMT ER - TY - CONF AU - Hegedüs, Ádám AU - Tuza, Kornélia AU - Katona, Péter AU - Zsolt, Greger AU - Kopper, Bence TI - Fatigue affected changes in the emg frequency characteristics of the elbow flexor muscles in handball players and university students T2 - IV. Sporttudományi PhD Szimpózium PY - 2019 SP - 32 UR - https://m2.mtmt.hu/api/publication/30649116 ID - 30649116 LA - English DB - MTMT ER - TY - JOUR AU - Hegedüs, Ádám AU - Tuza, Kornélia AU - Katona, Péter AU - Kopper, Bence AU - Tihanyi, József TI - Szubmaximális izometrikus kontrakció alatt bekövetkező fáradás hatása a motoros egységek aktivációjára a könyökhajlító izmokban JF - BIOMECHANICA HUNGARICA J2 - BIOMECH HUNG VL - 11 PY - 2018 IS - 2 SP - 43 EP - 49 PG - 7 SN - 2060-0305 UR - https://m2.mtmt.hu/api/publication/31405678 ID - 31405678 LA - Hungarian DB - MTMT ER -