Person: ŞEKİR, UFUK
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ŞEKİR
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UFUK
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Publication The effect of static stretching of peroneal and tibialis anterior muscles on reaction time a randomized controlled study(Lippincott Williams & Wilkins, 2019-02-01) Arslan, Gufat; Şekir, Ufuk; ŞEKİR, UFUK; İlhan, Osman; Akova, Bedrettin; AKOVA, BEDRETTİN; Bursa Uludağ Üniversitesi/Tıp Fakültesi; 0000-0003-2735-8697; 0000-0003-1044-8805; AAM-4348-2020; AAI-4550-2021; ABC-8182-2021Objective: The aim of this study was to investigate the acute and chronic effects of static stretching on peroneal and tibialis anterior reaction characteristics.Design: All 23 participants who volunteered for this study were randomly divided into static (n = 12) and control (n = 11) groups. The subjects in the static stretching group performed stretching exercises for the ankle evertor and dorsiflexor muscles 5 days a week for 6 wks. Peroneal and tibialis anterior muscle reaction characteristics were evaluated at the beginning (2 times for acute effect) and end of this period. Electromyographic activity parameters of the muscles were measured using an ankle inversion tilting platform that simulated a sudden ankle inversion. The following were the four different ankle inversion conditions: (a) ankle-neutral, 15-degree inversion; (b) ankle-neutral, 30-degree inversion; (c) ankle-20-degree plantarflexion, 15-degree inversion; and (d) ankle-20-degree plantarflexion, 30-degree inversion.Results: Either in terms of acute or chronic effects, no significant differences were found after static stretching exercises for peroneal and tibialis anterior muscle reaction time, reaction duration, and muscle activity evaluated in four positions on the ankle inversion simulation platform (P > 0.05).Conclusions: In light of these results, it is possible to state that the short duration of static stretching exercises can still be applied before sports activities.Publication The effects of basketball and soccer training on arterial stiffness(Soc Brasileira Med Esporte, 2021-01-01) Saka, Tolga; Dogan, Ali; Akkurt, Soner; Karakus, Mehmet; Sekir, Ufuk; ŞEKİR, UFUK; Bursa Uludağ Üniversitesi/Spor Bilimleri Fakültesi.; 0000-0003-2735-8697; AAM-4348-2020Objective: The purpose of this study was to examine arterial stiffness in elite basketball and soccer athletes by pulse wave velocity. Methods: The cohort comprised 35 healthy male volunteers aged 17 to 26 years. All the subjects were either basketball players (n=9), soccer players (n=12) or sedentary controls (n=14). Arterial stiffness was measured by the Pulse Trace System (Micro Medical Ltd., Rochester, UK) and echocardiographic images were taken using a commercially available machine (Vivid 7 GE-Vingmed, Horten, Norway) with a 2.5 MHz transducer. Results: The basketball players had significantly higher heights and body weights as compared to both the soccer players and the controls. The aortic elastic properties derived from the echocardiographic measurements did not differ between the groups. The peripheral pulse wave velocity measurements showed significantly lower values both in the basketball and soccer players compared to the controls, whereas the central pulse wave velocity measurement was significantly lower only in the basketball players as compared to the controls. No significant difference was seen between the basketball and soccer players. Conclusions: The results of this study show that football and basketball exercises comprised of aerobic, anaerobic, endurance balance-coordination and sport-specific training play a role in reducing arterial stiffness.Publication Effects of muscle architecture on eccentric exercise induced muscle damage responses(Uludağ Üiversitesi, Spor Tıp Bölümü, 2021-12-01) Senisik, Seher Cagdas; Akova, Bedrettin; Şekir, Ufuk; Gür, Hakan; AKOVA, BEDRETTİN; ŞEKİR, UFUK; GÜR, HAKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı; 0000-0003-1044-8805; 0000-0003-2735-8697; AAI-4550-2021; AAM-4348-2020; JQZ-4279-2023There is a need to investigate the role of muscle architecture on muscle damage responses induced by exercise. The aim of this study was to determine the effect of muscle architecture and muscle length on eccentric exercise-induced muscle damage responses. Eccentric exercise-induced muscle damage was performed randomly to the elbow flexor (EF), knee extensor (KE), and knee flexor (KF) muscle groups with two week intervals in 12 sedentary male subjects. Before and after each eccentric exercise (immediately after, on the 1st, 2nd, 3rd, and 7th days) range of motion, delayed onset muscle soreness, creatine kinase activity, myoglobin concentration and isometric peak torque in short and long muscle positions were evaluated. Furthermore, muscle volume and pennation angle of each muscle group was evaluated before initiating the eccentric exercise protocol. Pennation angle and muscle volume was significantly higher and the workload per unit muscle volume was significantly lower in the KE muscles compared with the KF and EF muscles (p < 0.01). EF muscles showed significantly higher pain levels at post-exercise days 1 and 3 compared with the KE (p < 0.01 -0.001) and KF (p < 0.01) muscles. The deficits in range of motion were higher in the EF muscles compared to the KE and KF muscles immediately after (day 0, p < 0.01), day 1 (p < 0.05 -0.01), and day 3 (p < 0.05) evaluations. The EF muscles represented significantly greater increases in CK and Mb levels at day 1, 3, and 7 than the KE muscles (p < 0.05 -0.01). The CK and Mb levels were also significantly higher in the KF muscles compared with the KE muscles (p < 0.05, p < 0.01 respectively). The KF and EF muscles represented higher isometric peak torque deficits in all the post -exercise evaluations at muscle short position (p < 0.05 -0.001) compared with the KE muscle after eccentric exercise. Isometric peak torque deficits in muscle lengthened position was significantly higher in EF in all the post-exercise evaluations compared with the KE muscle (p < 0.05 -0.01). According to the results of this study it can be concluded that muscle structural differences may be one of the responsible factors for the different muscle damage responses following eccentric exercise in various muscle groups.Publication The effectiveness of exercise programme and radioisotope synovectomy: In hemophilic patients(Wiley, 2015-06-01) Evim, Melike Sezgin; Şekir, Ufuk; Baytan, Birol; Güneş, Adalet Meral; SEZGİN EVİM, MELİKE; ŞEKİR, UFUK; Baytan, Birol; MERAL GÜNEŞ, ADALET; Uludağ Üniversitesi/Tıp Fakültesi; 0000-0003-2735-8697; 0000-0002-9375-2855; AAM-4348-2020; AAH-1452-2021; R-5044-2018; DVW-8108-2022; JGX-6145-2023Publication Muscle latency and proprioception in non-dominant and dominant legs of healthy sedentary individuals(Bayçınar Tıbbi Yayıncılık, 2015-03-01) Şekir, Ufuk; Keleş, Banu Seher; Gür, Hakan; ŞEKİR, UFUK; GÜR, HAKAN; Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı.; 0000-0003-2735-8697; AAM-4348-2020; I-9594-2017; R-5044-2018Objective: The effects of lower extremity dominance on response latency and proprioceptive ability have been reported for physically active individuals, but not for sedentary individuals. The aim of this research was to explore the differences in muscle latency and proprioceptive ability between the non-dominant and dominant legs of healthy sedentary individuals. Material andMethods: Nineteen healthy male subjects without a history of any physical training practice for a minimum of 12 months were enrolled in this study. An ankle inversion tilting platform was used to measure the reaction times of the tibialis anterior and peroneus longus muscles. Joint position sense measured actively and passively and kinesthesia were used to evaluate proprioception of the ankle joint.Results: Neither the latency times of the tibialis anterior and peroneus longus muscles nor the proprioceptive ability score measurements exhibited significant differences between the non-dominant and dominant legs (p>0.05).Conclusion: The results of this investigation indicates that there is no side differences between the limbs with the evaluation of the peroneus longus or tibialis anterior muscle reaction times, ankle joint position sense, and ankle kinesthesia for healthy sedentary individuals.Publication Investigation of the thermal comfort of the sportswear by standing thermal manikin and thermal imaging techniques(Sage Publications Ltd, 2023-06-01) Özkan, Esra Taştan; Kaplangiray, Binnaz; Şekir, Ufuk; Şahin, Şenay; KAPLANGİRAY, BİNNAZ; ŞEKİR, UFUK; ŞAHİN, ŞENAY; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı.; Bursa Uludağ Üniversitesi/Spor Bilimleri Fakültesi/Antrenörlük Eğitimi Bölümü.; 0000-0002-1296-9092 ; 0000-0003-2735-8697 ; AAM-4348-2020; FDE-4794-2022; AAD-9210-2019Garments should not overload the body during activity and should be chosen in accordance with the ambient conditions. Especially in active sports, sportswear should make a person feel comfortable and increase performance by easily removing excess heat and moisture from the body without interrupting physical activity. In this study, five T-shirts with the same size and weight characteristics, but in different yarn types were produced and analysed. The thermal and water vapour resistance properties of these garments were measured using a thermal manikin system. In addition, thermal camera images were taken at 10-minute intervals during the 50-minute wear trial programme, and skin temperatures were measured from the upper front body and the upper back body with two sensors. The results showed that POS and PM-coded garments made of polyester with low clothing insulation (clo) values were statistically different from CS and CPS coded cotton-containing garments in terms of front and back surface thermal camera images. It was observed that cotton-containing garments were more uncomfortable than polyester and Tencel owing to their higher thermal resistance, garment surface temperature, and skin temperature values. The Tencel garment was measured similarly to the CS and CPS coded garments at the beginning of the activity and measured similarly to the POS and PM coded garments at the end of the activity on both surfaces.Publication Effect of different garments on thermophysiological and psychological comfort properties of athletes in a wear trial test(Nature Portfolio, 2023-09-09) Özkan, Esra Tastan; KAPLANGİRAY, BİNNAZ; Kaplangiray, Binnaz; Şekir, Ufuk; ŞEKİR, UFUK; Şahin, Şenay; ŞAHİN, ŞENAY; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Tekstil Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı.; 0000-0002-1296-9092; AAD-9210-2019; AEE-5817-2022; JHT-0825-2023This paper reports on an experimental investigation of thermophysiological and psychological responses during and after an incremental low- to high-intensity exercise at 27 degrees C and 45% humidity. Five t-shirt garments were produced from different yarn types, their weights and yarn counts were close to each other. During the wear trials, heat and humidity sensors were placed at four body locations (the chest, back, abdomen, and waist). In addition, dynamic comfort measurements of the upper body were examined using a datalogger and subjective rating scales. This study aimed to investigate the effects of garment type on aerobic performance, microclimate temperature and humidity values, and psychological comfort. It was observed that the relative humidity and temperature of the microclimate were low in fabrics with high air permeability and low thermal resistance values of the Tencel single jersey and polyester mesh knitted fabrics. There was a significant difference in microclimate temperature results of TS coded Tencel single jersey t-shirt sample and other t-shirt samples according to statistical analysis results. On the other hand, the statistical results of the PM coded fabric sample measured at lower humidity in the three body regions were found to be a significantly different from those of the other samples (except TS). Although not statistically significant, the VO2 values and heart rates of these fabrics were lower than those of other fabrics. It was concluded that garments made from Tencel single jersey (TS) and polyester mesh (PM) fabrics affected the performance of athletes positively. Athletes were less forced during the training, and the activity could be maintained more than the others when wearing these clothes.Publication Acute effects of static stretching on peak and end-range hamstring-to-quadriceps functional ratios(Baishideng Publishing Group Inc, 2015-10-18) Şekir, Ufuk; Arabacı, Ramiz; Akova, Bedrettin; ŞEKİR, UFUK; ARABACI, RAMİZ; AKOVA, BEDRETTİN; Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı; Uludağ Üniversitesi/Spor Bilimleri Fakültesi/Beden Eğitimi ve Spor Bölümü; 0000-0003-2735-8697; 0000-0003-1044-8805; R-5044-2018; ABI-4831-2020; AAI-4550-2021; AAM-4348-2020AIM: To evaluate if static stretching influences peak and end-range functional hamstring-to-quadriceps (H/Q) strength ratios in elite women athletes.METHODS: Eleven healthy female athletes in an elite competitive level participated to the study. All the participants fulfilled the static stretching or non-stretching (control) intervention protocol in a randomized design on different days. Two static unassisted stretching exercises, one in standing and one in sitting position, were used to stretch both the hamstring and quadriceps muscles during these protocols. The total time for the static stretching was 6 +/- 1 min. The isokinetic peak torque measurements for the hamstring and quadriceps muscles in eccentric and concentric modes and the calculations for the functional H/Q strength ratios at angular velocities of 60 degrees/s and 180 degrees/s were made before (pre) and after (post) the control or stretching intervention. The strength measurements and functional strength ratio calculations were based during the entire-and end-range of knee extension.RESULTS: The pre-test scores for quadriceps and hamstring peak torque and end range values were not significantly different between the groups (P > 0.05). Subsequently, although the control group did not exhibit significant changes in quadriceps and hamstring muscle strength (P > 0.05), static stretching decreased eccentric and concentric quadriceps muscle strength at both the 60 degrees/s and 180 degrees/s test speeds (P < 0.01). Similarly, static stretching also decreased eccentric and concentric hamstring muscle strength at both the 60 degrees/s and 180 degrees/s test speeds (P < 0.01). On the other hand, when the functional H/Q strength ratios were taken into consideration, the pre-intervention values were not significant different between the groups both during the entire and end range of knee extension (P > 0.05). Furthermore, the functional H/Q strength ratios exhibited no significant alterations during the entire and end ranges of knee extension both in the static stretching or the control intervention (P > 0.05).CONCLUSION: According to our results, static stretching routine does not influence functional H/Q ratio. Athletes can confidently perform static stretching during their warm-up routines.