Shoulder Isokinetic Performance in Healthy Professional Judo Athletes: Normative Data

Marcondes, Freddy Beretta; Castropil, Wagner; Schor, Breno; Miana, Andreia; Vasconcelos, Rodrigo Antunes de; Etchebehere, Maurício

doi:10.1590/1413-785220192706223708

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…Bu sonuç, sporcularda add kuvvetinin abd kuvvetinden daha yüksek olduğunu göstermektedir. 17 Judocuların pik tork değerlerinin voleybol ve basketbolculardan daha yüksek olması judoda hareketlerin ardı ardına, tüm kasların katıldığı çabuklukta, maksimal, patlayıcı güç ve dayanıklılık ortaya koyarak yapılmasıdır. 18 Tuzak nöropatilerinin patofizyolojisinde traksiyon, kompresyon ve bunun sonucunda sinirde meydana gelen iskemik süreç yer alır.…”

Section: Discussionunclassified

Between Trap Neuropathy and Force in the Shoulder in Basketball and Volleyball Players: Experimental Research

İŞLER¹,

Ağaoğlu²,

Tural³

et al. 2023

Turkiye Klinikleri J Sports Sci

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Tenis, voleybol, beyzbol, basketbol gibi farklı hareket mekaniğine sahip sporlar, omuz eklemindeki statik ve dinamik yapıları önemli ölçüde zorlar. Bu çalışmada, basketbol ve voleybolcularda tekrarlayan omuz elevasyonu sonrası aksiller sinir ve deltoid kasta oluşabilecek elektrofizyolojik değişiklikler ve bunların kuvvete yansımasının incelenmesi amaçlanmıştır. Tek bir kökten (C5) inerve olan rhomboid kası dışında tüm kaslar birbirine komşu birkaç kökten inerve olmaktadır. Kök basısını bertaraf etmek için C5 ten inerve olan rhomboid kasa da iğne elektromiyografi (EMG) yapılmıştır. Gereç ve Yöntemler: Toplam 35 sporcu [8'i (%22,9) kadın, 27'si (%77,1) erkek, 13'ü (%37,1) voleybol, 22'si (%62,9) basketbol] ve 35 sedanter [21'i (%60) kadın, 14'ü (%40) erkek] çalışmaya dâhil edildi. Tüm katılımcıların omuz abdüksiyon ve addüksiyon kuvveti izokinetik olarak ölçüldü. Deltoid ve rhomboid kasların kantitatif EMG analizi ve aksiller sinire bilateral motor sinir iletimi ölçümleri sadece sporcularda yapıldı. Bulgular: Sporcular, tüm hareketlerde kontrol grubuna göre daha yüksek pik tork değerleri gösterdi (p<0,05). Tüm deneklerde, abdüksiyon pik torku addüksiyona göre daha düşük bulundu. Basketbolcularda ve voleybolcularda aksiller sinir lezyonu ile uyumlu olabilecek elektronörografi bulgusuna rastlanmadı. 7 (%20) sporcuda (2 kadın voleybol, 5 erkek basketbol) sağ rhomboid ve deltoid kaslarda nörojenik tutulum saptandı. 2 sporcuda (1 bayan voleybol, 1 erkek basketbol) sağ dorsal skapular sinirin kronik parsiyel aksonal lezyonu rapor edildi. Nörojenik tutulumu olan ve olmayan sporcuların pik tork değerleri arasındaki fark istatistiksel olarak anlamlı değildi. Sonuç: Bu çalışmada, baş üstü aktivite yapan sporcularda aksiller sinirin yanı sıra skapula dorsal sinirin de tuzaklanabileceğini görmüş olduk. Spesifik risk faktörlerinin belirlenmesi, sporcuların ve antrenörlerin antrenman programlarını düzenlemelerine ve bu yaralanmaları azaltmalarına yardımcı olacaktır.

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Section: Discussionunclassified

Between Trap Neuropathy and Force in the Shoulder in Basketball and Volleyball Players: Experimental Research

İŞLER¹,

Ağaoğlu²,

Tural³

et al. 2023

Turkiye Klinikleri J Sports Sci

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“…It was reported that isokinetic dynamometry could provide beneficial information regarding the detection of the strength of a particular muscle group as well as the timely detection of imbalance between muscle groups in judo [ 11 ] and as an injury prevention tool [ 12 ]. Isokinetic testing has been used in judo mainly to test knee [ 13 , 14 , 15 , 16 , 17 , 18 ], shoulder [ 19 ], elbow [ 20 ], trunk [ 21 ], hip [ 17 ] and ankle [ 14 ] muscle strength and strength ratios. However, the problem of these studies is that the sampling included judo athletes from multiple weight categories.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Eccentric Hamstring Strength and Eccentric Derived Strength Ratios in Judokas from a Single Weight Category

Šimenko

Karpljuk

Hadžić

2022

IJERPH

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Background: This study was designed to perform isokinetic knee testing of male judokas competing in the under 73 kg category. The main aims were: to establish the concentric (CON) and eccentric (ECC) strength profile of hamstrings (H) and CON profile of quadriceps (Q) muscles; to evaluate the differences in CON and ECC peak torques (PT) with various strength ratios and their bilateral asymmetries; the calculation of the dynamic control ratio (DCR) and H ECC to CON ratio (HEC); Methods: 12 judokas competing on a national and international levels with a mean age of 19 ± 4 years, a weight of 75 ± 2 kg and with a height of 176 ± 5 cm were tested. All the subjects were right-hand dominant. Isokinetic testing was performed on iMOMENT, SMM isokinetic machine (SMM, Maribor, Slovenia). The paired t-test was used to determine the difference between paired variables. The level of significance was set at p ≤ 0.05; Results: Statistical differences between left (L) and right (R) Q PT (L 266; R 241 Nm), H ECC PT (L 145; R 169 Nm), HQR (L 0.54; R 0.63), DCR (L 0.55; R 0.70), HEC (L 1.02; R 1.14) and PTQ/BW (L 3.57; R 3.23 Nm/kg) were shown. Bilateral strength asymmetries in CON contraction of 13.52% ± 10.04 % for Q, 10.86% ± 7.67 % for H and 22.04% ± 12.13% for H ECC contraction were shown. Conclusions: This study reports the isokinetic strength values of judokas in the under 73 kg category, emphasising eccentric hamstring strength and eccentric derived strength ratios DCR and HEC. It was shown that asymmetries are better detected using eccentric testing and that the dominant leg in judokas had stronger eccentric hamstring strength resulting in higher DCR and HEC.

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“…Among elite judokas, male athletes have more glenohumeral rotator muscle strength than females, and the dominant shoulder is stronger than the nondominant shoulder in both sexes, but bilateral strength asymmetry is less than 10%. (Marcondes et al, 2019) A recent study reported normative values for the glenohumeral range of motion and demonstrated that young female judo athletes have more shoulder joint laxity than males. (Madaleno et al, 2021) Additional characterization of the shoulders of judo athletes and improved identification of factors affecting shoulder functional status would help developing specific programmes with the purpose of prevent shoulder injury occurrence and recurrence in judo athletes.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting the shoulder functional profile in elite judo athletes

Delorme

Blache

Degot

et al. 2022

European Journal of Sport Science

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The aim was to investigate the effects of sex, age, preferred judo technique, dominance, and injury history on the shoulder functional status of elite judo athletes. Sixty-one elite judo athletes (38 males, age: 18.1 ± 1.2 years, body mass: 69.3 ± 13.3 kg, body height: 172.2 ± 9.8 cm, brown belt to second-degree black belt) completed three questionnaires: Western Ontario Shoulder Instability, Western Ontario Rotator Cuff, and Shoulder Instability-Return to Sport after Injury. They performed four physical tests: the glenohumeral rotator isometric strength test, upper quarter Y-balance test, unilateral seated shot put test, and modified Closed Kinetic Chain Upper Extremity Stability Test. The results showed that the female athletes had less shoulder functional abilities than the male athletes (p < 0.001 to p = 0.02). The younger athletes had poorer shoulder stability and upper extremity power than the older athletes (p < 0.001 to p = 0.02), but their glenohumeral muscles were stronger in both internal (p = 0.03) and external (p = 0.005) rotations. All the judo athletes had similar bilateral differences in shoulder functional status, except for judokas who preferred throwing techniques (p = 0.01). Injury history affected self-perceived functional status (p < 0.001), as well as upper extremity muscle capacity and neuromuscular control (p = 0.01 to p = 0.05). This study provides new insight into the shoulder functional status of elite judo athletes, which may aid in the development of sports-specific injury prevention and return-to-sport programmes to reduce the risk of shoulder injury occurrence and recurrence. Highlights. Normalized levels of upper extremity abilities must be sex-and age-specific in prevention programmes. . Prevention programmes may focus on muscle bilateral and anteroposterior symmetry.. Prevention programmes may include psychological training tailored to the sex of judo athletes.

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Shoulder Isokinetic Performance in Healthy Professional Judo Athletes: Normative Data

Cited by 9 publications

References 16 publications

Between Trap Neuropathy and Force in the Shoulder in Basketball and Volleyball Players: Experimental Research

Between Trap Neuropathy and Force in the Shoulder in Basketball and Volleyball Players: Experimental Research

Monitoring of Eccentric Hamstring Strength and Eccentric Derived Strength Ratios in Judokas from a Single Weight Category

Factors affecting the shoulder functional profile in elite judo athletes

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