The Relationship between Shoulder Joint Injury and Isokinetic Muscle Strength Ratio of University Male Volleyball Players

2018 ◽  
Vol 13 (2) ◽  
pp. 445-453
Author(s):  
Ickwon Kang
Keyword(s):  
Muscle Strength ◽  
Shoulder Joint ◽  
Strength Ratio ◽  
Joint Injury ◽  
Isokinetic Muscle Strength ◽  
Volleyball Players ◽  
The Relationship

scholarly journals Determination of the relationship between the wrist isokinetic muscle strenght and the grip strength in tennis players aged between 12-14

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0007
Author(s):  
Bihter Akınoğlu ◽  
Tuğba Kocahan ◽  
Necmiye Ün Yıldırım ◽  
Çağlar Soylu ◽  
Adnan Hasanoğlu
Keyword(s):  
Muscle Strength ◽  
Grip Strength ◽  
Standing Position ◽  
Dominant Hand ◽  
Sitting Position ◽  
Wrist Flexion ◽  
Tennis Players ◽  
Isokinetic Muscle Strength ◽  
The Relationship ◽  
Flexion And Extension

Aim: The purpose of this study is to determine the relationship between isokinetic wrist muscle strenght and grip strength in tennis players aged between 12-14. Methods: This study was carried out with the participation of 9 (3 female and 6 male) tennis players aged between 12-14 (means 13,22±0,83). Weight, height, body mass index and dominant extremity of the players were recorded. İsokinetic measurement was performed with Isomed 2000® device. İsokinetic testing protocol; before the test all players performed the wrist flexion and extension isokinetic test with the 5 repeating at 90 º/sec as a warm-up and for comprehenting the test. Then, wrist flexion and extension concentric-concentric strength measurements were performed with the 5 repeating at 60 º/sec and with the 15 repeating at 240 º/sec with the angle between 50 degrees of wrist flexion and 60 degrees of wrist extension and peak torque values were recorded. Standard Jamar® Dynamometer was used for grip strength measurements. Grip strenght was performed firstly in sitting position, which is the position of standard measurement. Secondly, in standing position, the elbow was in full ekstansion and the forearm was in neutral position. Thirdly, in standing position the wrist was positioned approximately 30° extension and 10° ulnar deviation. This test was repeated 3 times in all test position and the mean of three scores were recorded. Firstly, the dominant hand, then the non-dominant hand was evoluated. They were allowed to rest for 30 seconds between each grip measurement. Correlation between peak tork of isokinetic muscle strenght and grip strength was done having been used Spearman correlation test. Findings: It was determined that there was a significant positive relation between wrist flexion-extension isokinetic muscle strength and grip strenght in tennis players aged between 12-14. Clinically, grip strength measured in the standard sitting position was found more as compared to the other positions but these values were not statistically significant (p>0,05). Accordingly, grip strength measured in the standard sitting position correlated with much more of the parameters which we evaluated for isokinetic muscle strength comparing to grip strenght measured in the other two positions (p<0,05). Results: It was concluded that isokinetic muscle strength of wrist can be affected by grip strength, therefore measurement needs to be done in the sitting position which maximum grip strength may reveal. [Table: see text]

The relationship between isokinetic muscle strength and spasticity in the lower limbs of stroke patients

2015 ◽  
Vol 19 (2) ◽  
pp. 284-290 ◽  
Author(s):  
I. Abdollahi ◽  
A. Taghizadeh ◽  
H. Shakeri ◽  
M. Eivazi ◽  
S. Jaberzadeh
Keyword(s):  
Muscle Strength ◽  
Lower Limbs ◽  
Stroke Patients ◽  
Isokinetic Muscle Strength ◽  
The Relationship

scholarly journals The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes

Nutrients ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2768 ◽  
Author(s):  
Do Kyung Kim ◽  
Geon Park ◽  
Liang-Tseng Kuo ◽  
Won Hah Park
Keyword(s):  
Vitamin D ◽  
Muscle Strength ◽  
Vitamin D Insufficiency ◽  
Vitamin D Status ◽  
Shoulder Muscle ◽  
Vitamin D Levels ◽  
Volleyball Players ◽  
The Relationship ◽  
Shoulder Muscle Strength ◽  
External Rotator

This study aimed to examine the vitamin D status of professional volleyball athletes and to determine its correlation with shoulder muscle strength. We included 52 healthy male professional volleyball players (23.2 ± 4.5 years), who were categorized by vitamin D status (<20 ng/mL: deficiency, 20–30 ng/mL: insufficiency, and >30 ng/mL: sufficiency). We examined the strength of the internal rotator (IR) and external rotator (ER) muscles of the shoulder by using an isokinetic dynamometer. Fourteen players (26.9%) had vitamin D deficiency, 24 players (46.2%) were vitamin D-insufficient, and 14 players (26.9%) were vitamin D-sufficient. There was no significant correlation between vitamin D level and shoulder muscle strength at 60°/s (IR, r = 0.159, p = 0.26; ER, r = 0.245, p = 0.08) and at 180°/s (IR, r = −0.093, p = 0.51; ER, r = −0.037, p = 0.79). Moreover, the isokinetic shoulder strengths were not significantly different across the three groups in all settings. In conclusion, vitamin D insufficiency was common in elite volleyball players. Though not being associated with isokinetic muscle weakness, vitamin D levels should be regularly monitored, and vitamin D should be supplied to young elite athletes, considering its importance for musculoskeletal health.

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