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    Relationship Between Range of Motion, Strength, Motor Control, Power, and the Tennis Serve in Competitive-Level Tennis Players: A Pilot Study.
    (Sage Publications Inc., 2018-09) Palmer, Kenneth; Jones, Debi; Zeppieri, Giorgio; Morgan, Christine; Zeppieri, Giorgio Jr.
    Background: The tennis serve is a complex skill requiring appropriate energy transfer to maximize serve speed. As the only independently powered shot in tennis, it is important to understand what characteristics contribute to a player's serve.Hypothesis: Upper extremity and lower extremity power variables will be predictive of serve speed.Study Design: Cross-sectional study.Level Of Evidence: Level 3.Methods: A total of 42 competitive tennis players underwent range of motion, strength, motor control, power, and serve speed testing. Motion assessment was completed for shoulder external and internal rotation, trunk rotation, hip external and internal rotation, and ankle dorsiflexion. Strength was assessed for the rotator cuff, scapula, and hip musculature. Motor control was evaluated through upper and lower extremity Y-balance testing. Power assessments were made using broad jump, single-leg hop, and seated unilateral shot put testing. Pearson correlation was conducted to assess associations of skill, height, and tested variables to serve speed. Significant variables were used in a stepwise linear regression model, with serve speed as the dependent variable. Variables are listed in relation to the participant's dominant arm.Results: Skill, height, contralateral hip external rotation range of motion, nondominant arm Y-balance anterolateral reach, bilateral single-leg hops, and seated unilateral shot put throws for both arms demonstrated significant positive correlations to serve speed ( P < 0.05). Serve speed was predicted with 84% variance through skill, height, contralateral hip external rotation range of motion, ipsilateral single-leg hop, and the seated unilateral shot put throws.Conclusion: The ability to generate increased serve speed is multifactorial. The combination of skill, height, hip motion, and upper and lower extremity power may determine serve speed.Clinical Relevance: The findings suggest that motion, motor control, and power testing should be evaluated when working with this population to improve serve speed. ABSTRACT FROM AUTHOR
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    Responsiveness, minimal detectable change, and minimal clinically important difference of the sitting balance scale and function in sitting test in people with stroke
    (Informa, 2022) Alzyoud, Jehad M.; Medley, Ann; Thomson, Mary; Csiza, Linda
    Background: Limited studies have examined the responsiveness of the Sitting Balance Scale (SBS) and Function in Sitting Test (FIST). No studies have investigated the psychometric properties of these tools in skilled nursing facilities. Objective: The purposes of the study were (1) to examine responsiveness of the SBS and FIST, in people with stroke, receiving rehabilitation in skilled nursing facilities; and (2) to estimate the MDC and MCID of these scales. Methods: Forty participants completed the FIST, SBS, and Barthel Index (BI) at admission and discharge. Internal responsiveness of the FIST and SBS was measured using Effect Size (ES) and Standardized Response Mean (SRM). Examining the association between the difference in scores on the SBS or FIST and the difference in scores on the BI determined external responsiveness. MDC and MCID were estimated for both measures. Results: The ES and the SRM for both scales were large (1.01–2.30) indicating excellent internal responsiveness. Both scales demonstrated satisfactory external responsiveness, showing good association with change in BI scores (p < .01). MDC90 of the SBS and the FIST were 2.3 and 3.9, respectively. Anchor-based MCID estimates were 4.5 and 3.5, and distribution-based were 3.5 and 4.8 for the SBS and FIST, respectively. Conclusions: Both scales demonstrate sufficient responsiveness in the skilled nursing setting. Our findings suggest a change of 5 on the SBS and 4 on the FIST are clinically important, and clinicians may use these values to assess patient progress.
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    The risk factors of CVA in Jordan
    (Informa, 2012-11) Auais, Mohammad A.; Alzyoud, Jehad M.; Sbieh, Ziad; Abdulla, Fuad A.
    This study aimed to identify the main risk factors of cerebrovascular accident (CVA) in Jordan. Identification of risk factors may help to reduce the incidence of CVA. A form was prepared for data collection which consisted of two parts to gather biodata and the incidence of risk factors. A sample of 200 patients with CVA (60 men) were randomly selected from various areas of Jordan. An age, region distribution, and gender-matched sample were selected to serve as control. Hypertension in the experimental group (66) was significantly higher than the control group (32) p < 0.001. Half of the subjects with stroke had diabetes compared to 22 of the control group (p < 0.001). Cardiovascular diseases were found in 29 of subjects with CVA compared to 14 in the control group (p < 0.001). About 27 of the CVA group had hyperlipidemia in comparison to 13 in the controls (p < 0.002). Smokers represented 54 of the experimental group compared to 30 of the control group (p < 0.05). An important finding in the present study was that about half of the selected subjects with strokes were under the age of 60 years. In conclusion, hypertension, diabetes, cardiovascular diseases, hyperlipidemia, and smoking are risk factors for CVA in Jordan.
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    Isometric elbow extensors strength in supine- and prone-lying positions
    (Informa, 2013-01) Abdelzaher, Ibrahim E.; Ababneh, Anas F.; Alzyoud, Jehad M.
    The purpose of this study was to compare isometric strength of elbow extensors measured in supine- and prone-lying positions at elbow flexion angles of 45 and 90 degrees. Twenty-two male subjects under single-blind procedures participated in the study. Each subject participated in both supine-lying and prone-lying measuring protocols. Calibrated cable tensiometer was used to measure isometric strength of the right elbow extensors and a biofeedback electromyography was used to assure no substitution movements from shoulder girdle muscles. The mean values of isometric strength of elbow extensors measured from supine-lying position at elbow flexion angles of 45 and 90 degrees were 11.1 ± 4.2 kg and 13.1 ± 4.6 kg, while those measured from prone-lying position were 9.9 ± 3.6 kg and 12 ± 4.2 kg, respectively. There is statistical significant difference between the isometric strength of elbow extensors measured from supine-lying position at elbow flexion angles of 45 and 90 degrees compared to that measured from prone-lying position (p < 0.05). The results suggest that in manual muscle testing starting position can affect the isometric strength of elbow extensors since supine-lying starting position is better than prone-lying starting position.
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    A geographical workforce analysis of hand therapy services in relation to US population characteristics
    (Elsevier Inc., 2017-07-06) Stegink-Jansen, Caroline W.; Collins, Prisca M.; Lindsey, Ronald W.; Wilson, James L.
    This descriptive study aimed to map the geographical distribution of US Certified Hand Therapists (CHTs) and describe characteristics of US populations living in respective CHT workplace Zip Code Tabulation Areas (ZCTAs).