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The purpose of this study was to explore the experiential knowledge of tennis coaches as it related to the development of grip positions in tennis athletes. Accredited tennis coaches (n = 11) completed semi-structured interviews consisting of open-ended questions about their coaching background, the importance of grip positions compared with other areas of foundational development, and their opinions on using physically-constraining tools (PCTs). Two major themes, "Grip positions are an adaptive skill" and "Why and how do I modify an athlete's grip?", were identified. Coaches expressed the opinion that grip positions were dynamic and a modifiable component of tennis stroke technique. Irrespective of shot type, grip positions were viewed as a non-negotiable aspect of talent development and intrinsically linked to other components of the stroke. Coaches questioned the necessity of technique refinement for grip positions given the complex and time-costly nature of bringing about effective motor-behaviour change. Some coaches expressed reservations about skill transfer into live match-play, intuitively expressing the concepts of the constraints-led approach to manipulate key variables within the athlete's environment to foster learning. Future research should aim to assess the short- and long-term effects of PCT use in tennis and establish the extent to which PCTs can impact learning and skill transfer.
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http://dx.doi.org/10.3390/sports12120325 | DOI Listing |
World J Urol
September 2025
Department of Urology, Hospital Clínico San Borja Arriarán, Santiago, Chile.
Purpose: Percutaneous nephrolithotomy (PCNL) is a common technique in the surgical management of renal lithiasis, but it also represents a significant workload for surgeons. Factors such as the patient's position and the type of lithotripter used influence the physical and mental load on the surgeon. The study aimed to identify stressors related to PCNL by comparing the physical and mental workload experienced by urologists during PCNL under different patient positions and using two lithotripters.
View Article and Find Full Text PDFJB JS Open Access
September 2025
OLVG, Orthopedic Surgery Department, Amsterdam, the Netherlands.
Background: Evidence supporting surgery in elderly patients with distal radius fractures is limited, but displaced fractures may benefit from surgery. This study aimed to determine whether casting is noninferior to surgery for patients aged 65 years or older with substantially displaced intra-articular (AO type C) distal radius fractures.
Methods: This multicenter randomized controlled noninferiority trial included 138 patients (mean age 76 years, SD 6.
J Telemed Telecare
September 2025
Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Izmir Katip Celebi University, Izmir, Türkiye.
IntroductionTo investigate the effectiveness of the remote video-based Strengthening and Stretching for Rheumatoid Arthritis of the Hand (SARAH) exercise program in individuals with rheumatoid arthritis (RA) with wrist involvement.MethodsSeventy-three individuals were included in the study. Wrist joint position sense, wrist joint range of motion, wrist pain, wrist morning stiffness, subjective and objective hand function, grip strength, and disease-related health status were assessed at baseline and after 12 weeks.
View Article and Find Full Text PDFPLoS One
September 2025
Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy.
In 16 healthy volunteers (age 42-69 years, 8 females) we investigated chewing effects on postural learning. Initially, the Centre of Pressure (CoP) position in bipedal stance was recorded (1 minute) in 4 conditions: Hard support (HS)-Open Eyes (OE), HS-Closed Eyes (CE), Soft Support (SS)-OE, SS-CE. Following 2 minutes of Chewing (C, n = 8 subjects, 4 females) or rhythmic Hand Grip (HG, n = 8 subjects, 4 females), 10 unipedal stance test (1 minute) were performed for 30 minutes in both groups in HS-OE, with a progressive decrease in CoP Velocity and Path Length.
View Article and Find Full Text PDFPeerJ
September 2025
Faculty of Health Sciences and Psychology, Medical College, University of Rzeszów, Rzeszów, Poland.
Background: The study aimed to determine and compare selected variables of body composition, upper limb strength, and resting energy expenditure from the perspective of field position in youth soccer players.
Methods: The study group consisted of 189 boys aged 9 to 19 years ( = 14.7 ± 2.