Reaction Time

This observational study aims to examine the relationship between the percentage of limb loss and functional outcomes in individuals with unilateral upper limb amputation. Upper limb amputation can affect posture, balance control, pain levels, daily living activities, hand function, and reaction time. However, limited research has investigated how the amount of limb loss influences these outcomes. Participants between 18 and 65 years of age who use a myoelectric or bionic prosthesis will undergo a series of assessments. These assessments include measurements of postural control using a force platform, posture analysis, evaluation of neck and low back pain using a visual analog scale, daily living activities using a validated questionnaire, hand dexterity using the Box and Block Test, and reaction time using a visual stimulus device. The study does not involve any intervention or treatment. All evaluations will be performed during a single assessment session. The results of this study may help improve rehabilitation planning and provide better understanding of functional changes associated with different levels of limb loss in people with upper limb amputation.

Studies comparing aerobic exercise with virtual reality or video game technologies to traditional games and classical exercise have been conducted in healthy adolescents, but no studies comparing virtual reality and video game technologies have been found. Based on all this, we aimed to investigate the effect of virtual reality and video game-based exercise programs on physical fitness and attention levels in healthy adolescents. The study was planned as a quantitative experimental randomized controlled trial. Healthy individuals aged 10-18 years who meet the inclusion criteria will be evaluated during the dates of the study. Individuals will be divided into 3 groups: a classical physical activity group, a virtual reality group, and a video-based game group. Each program will be implemented for 20-30 minutes, three days a week for eight weeks. The Physical Activity Scale for Adolescents was used to evaluate the physical activity of the individuals, the Multidimensional Body-Self Relationship Scale was used to measure body image, and the Exercise Benefit/Barrier Scale was used to measure exercise perception. To measure attention, balance, and reaction time, the D2 Attention Test, Y-Balance Test, and Nelson's Hand Reaction Test will be administered, respectively. In the virtual reality and video-based game group, the games played by participants will be similar to the physical activities performed in the classic exercise group. One or more games incorporating these physical activities will be selected.

This study will examine whether caffeine improves cognitive and competitive performance in professional chess players during tournament-style games. In a randomized double-blind crossover design, participants will complete two experimental sessions in which they consume either caffeinated coffee or decaffeinated coffee before playing a standardized chess match. Cognitive performance will be assessed using attention and reaction-time tests, including the Stroop Test, Trail Making Test, and Puzzle Rush task. Chess performance outcomes such as move accuracy, time management, and error rates will also be evaluated. The study aims to determine whether moderate caffeine intake enhances focus, alertness, and decision-making during prolonged competitive chess play.

This prospective observational study aims to investigate the relationship between respiratory function and multidimensional athletic performance parameters in professional soccer players. The primary hypothesis of the study is that soccer players with enhanced respiratory function and superior respiratory muscle strength will exhibit optimized motor performance outcomes and shorter (faster) reactive reaction times. Investigators will evaluate respiratory muscle strength, spirometric pulmonary functions, dynamic balance, core and abdominal endurance, and reactive visuomotor reaction times during a single testing session within the competitive season.

This study will be conducted between May and August 2026 at Aydın Adnan Menderes University, Faculty of Health Sciences, with male individuals aged 18-35. For the study, cases will first be divided into 3 groups by computer-assisted randomization.The first group will be the Flex-i bar group, the second group will be the Theraband Flex bar group, and the third group will be the Sham bar group. Group 1 will perform the exercises with the Flex-i bar, while Group 2 will perform them with the Theraband Flex bar. The control group will perform the exercises with a rolling pin.After group assignment of cases is completed, demographic information such as age, height and weight of the participants will be recorded. Then, pre-exercise assessments of the participants will be conducted. The assessment will include proprioception, reaction time, power and upper extremity performance. Following the initial assessment, each group will perform their exercises with their own exercise material. Measurements will be repeated after the exercises. Measurements will be taken three times during the assessments and the best result will be recorded.

This study aims to compare the effects of two different ankle taping methods-kinesio taping and dynamic taping-on balance, vertical jump performance, and reaction time in basketball players. Basketball involves frequent jumping, rapid changes in direction, and single-leg balance tasks that place substantial demands on ankle stability. Reduced ankle stability may negatively affect athletic performance and increase injury risk. Taping methods are commonly used in sports settings to support the ankle joint and enhance functional performance; however, limited comparative evidence exists in basketball players. In this non-randomized, fixed-sequence crossover study, healthy male basketball players aged 18 to 30 years will receive both kinesio taping and dynamic taping applications separated by a one-week interval. Kinesio taping will be applied during the first session and dynamic taping during the second session. Each participant will serve as their own control. Performance assessments will be conducted immediately before and after each taping application. Outcome measures include dynamic balance assessed using the Y-Balance Test, vertical jump performance assessed using a mobile application-based jump test, and lower extremity visuomotor reaction time assessed using a visual stimulus-response task. All procedures are non-invasive and associated with minimal risk. The findings are expected to contribute to evidence-based taping strategies aimed at improving athletic performance and supporting ankle function in basketball players.

Rotator cuff lesions are among the most common problems within musculoskeletal disorders. The prevalence of these lesions increases with age, and they encompass a wide spectrum of various injuries and pathological conditions. The literature frequently reports that such lesions often lead to pain, decreased functional capacity, and a reduction in quality of life. Although some of these lesions are traumatic in origin, the majority of rotator cuff problems are degenerative due to age-related changes in tendon structure. Recent scientific studies have indicated that core stability may be a significant factor in such musculoskeletal problems. Adequate core stabilization not only minimizes the load on the vertebral column but also enhances the strength and endurance of peripheral joints and facilitates the transfer of energy to distal segments. Given that rotator cuff lesions can adversely affect upper extremity functions and potentially result in reduced core stability, we hypothesize that they may negatively influence reaction time and hand-eye coordination, which are essential for the effective execution of motor tasks. To date, no studies have been identified in the literature investigating the relationship between core stability and reaction time or hand-eye coordination in individuals with rotator cuff lesions. In light of this information, the aim of our planned study is to examine the relationship between core stability and reaction time, hand-eye coordination, pain, and functional status in individuals with rotator cuff lesions and to compare these findings with asymptomatic individuals.