The purpose of this study was to investigate whether listening relaxing music would help reduce mental fatigue and maintain performance after a continuous task. experiment involved two evaluation phases carried out before inducing phase. A 1-hour AX-continuous test used induce in the fatigue-inducing phase, participants' subjective on fatigue, as well their neurobehavioral Go/NoGo task, were measured total 36 undergraduate students (18-22 years) participated randomly assigned group control...

Landing and squat tasks have been utilized to assess lower extremity biomechanics associated with anterior cruciate ligament loading injury risks. The purpose of this study was identify the differences correlations in knee hip mechanics during a single-leg landing, squat, double-leg squat. Seventeen male 17 female recreational athletes performed landings squats when kinematic kinetic data were collected. ANOVAs showed significant (p < 0.00001) for maximum flexion angles, abduction adduction...

Anterior cruciate ligament (ACL) injuries commonly occur during jump-landing tasks when individuals' attention is simultaneously allocated to other objects and tasks. The purpose of the current study was investigate effect allocation imposed by a secondary cognitive task on landing mechanics jump performance. Thirty-eight recreational athletes performed in three conditions: no counting, counting backward 1 s from randomly given number, 7 number. Three-dimensional kinematics ground reaction...

<sec> <title>BACKGROUND</title> Concussion has been a major public health concern due to the substantial cognitive sequelae it results. Although dysfunctions of frontal lobe and corpus callosum owing concussions have documented, existing concussion screening tools merely examine functions in isolation motor failed detect chronic cognitive-motor impairments following concussions. Yet, there no test aimed specifically assess coupled functions. </sec> <title>OBJECTIVE</title> The current study...

The inversion effect in biological motion suggests that presenting a point-light display (PLD) an inverted orientation impairs the observer’s ability to perceive movement, likely due unfamiliarity with dynamic characteristics of motion. Vertical dancers (VDs), accustomed performing and perceiving others perform dance movements while being suspended air, offer unique perspective on this phenomenon. A previous study showed VDs were more sensitive artificial PLDs depicting when compared typical...

The purpose of the study was to investigate relationship between different exercise modes and visuospatial working memory in healthy older adults. A cross-sectional design adopted. total 111 adults were enrolled study. They classified by exercise-related questionnaire be an open-skill group, closed-skill group or sedentary group. In experiment 1, participants performed a task. results indicated that both ( p &lt; 0.05) 0.01) groups reached higher accuracy than Experiment 2 examined whether...

The purpose was to quantify the effects of mid-flight whole-body and trunk rotation on knee mechanics in a double-leg landing. Eighteen male 20 female participants completed jump-landing-jump task five conditions: no rotation, testing leg ipsilateral or contralateral (WBRC) direction, (TRI) direction. WBRC TRI conditions demonstrated decreased flexion increased abduction angles at initial contact (2.6 > Cohen's dz 0.3) peak vertical ground reaction forces adduction moments during 100 ms...

Frailty and cognitive impairment are significant problems faced by older adults, which have a impact on their activities of daily living, social activities, quality life.Cross-sectional study.A total 252 adults in two communities Yangzhou were randomly selected. The function the elderly was assessed using Memory Executive Screening (MES). frailty phenotype used to evaluate frail situation adults. activity living (ADL), functional questionnaire (FAQ), European 5-dimensions (EQ-5D) health...

Bingham, Schmidt, & Rosenblum, (1989) showed that people are able to select, by hefting balls, the optimal weight for each size ball be thrown farthest. We now investigate function learning and smart mechanisms as hypotheses about how this affordance is perceived. Twenty-four unskilled adult throwers learned throw practicing with a subset of balls would only allow acquisition ability perceive if acts mechanism provide access single information variable specifies affordance. Participants...

To determine the effect of unanticipated mid-flight medial-lateral external perturbation upper or lower trunk on anterior cruciate ligament (ACL) loading variables during jump-landings. Thirty-two participants performed double-leg vertical jump-landings while bilateral kinematics and kinetics were collected under 6 conditions (upper locations; no, left, right directions). Two customized catapult apparatuses created to apply pushing near maximal jump height. The ball contacted center mass for...

Increased lateral trunk bending to the injured side has been observed when ACL injuries occur. The purpose was quantify effect of mid-flight on center mass (COM) positions and subsequent landing mechanics during a jump-landing task. Forty-one recreational athletes performed task with or without bending. When left right conditions were compared no condition, participants moved COM upper body direction, while pelvis, ipsilateral leg, contralateral leg away from direction relative whole COM....

Working memory updating (WMU), a controlled process to continuously adapt the changing task demand and environment, is crucial for cognitive executive function. Although previous studies have shown that elderly were more susceptible interference than youngsters, picture of age-related deterioration WMU incomplete due lack study on people at their middle ages. Thus, present investigated impact age among adults by cross-sectional design verify whether inefficiency control accounts aging WMU.In...

A variety of the available time to react (ATR) has been utilised study knee biomechanics during reactive jump-landing tasks. The purpose was quantify kinematics and kinetics a jump-land-jump task three possible directions as ATR reduced. Thirty-four recreational athletes performed 45 trials task, which direction second jump (lateral, medial or vertical) indicated before they initiated first jump, instant 300 ms landing, 150 landing at landing. Knee joint angles moments close were...

The purpose of this study was to investigate the effect time-of-day (morning vs. afternoon) on static and dynamic balance in recreational athletes. A total 34 athletes completed single-leg stance test with or without eyes open, lower quarter Y-balance test, upper landing a random order morning (7:00–10:00 am) afternoon (3:00–6:00 pm) for two consecutive days. Compared morning, participants demonstrated decreased centre pressure (COP) sway areas (p = 0.002; Cohen's d (d) 0.28) speeds 0.17)...

In 2 experiments, the current study explored how affordances structure throwing for long distance and accuracy. Experiment 1, 10 expert throwers (from baseball, softball, cricket) threw regulation tennis balls to hit a vertically oriented 4 ft × target placed at each of 9 locations (3 distances 3 heights). We measured their release parameters (angle, speed, height) showed that they scaled throws in response changes target's location. then simulated projectile motion ball identified...

Previous studies utilizing jump-landing biomechanics to predict anterior cruciate ligament injuries have shown inconsistent findings. The purpose of this study was quantify the differences and correlations in kinematics between a drop-jump, controlled volleyball-takeoff, simulated-game volleyball-takeoff. Seventeen female volleyball players performed these 3 tasks on court, while 3-dimensional kinematic data were collected by calibrated camcorders. Participants demonstrated significantly...

Abstract Spheroids are ball-shaped stone objects found in African archaeological sites dating from 1.8 million years ago (Early Stone Age) to at least 70,000 (Middle Age). either fabricated or naturally shaped stones selected and transported places of use making them one the longest-used technologies on record. Most hypotheses about their suggest they were percussive tools for shaping grinding other materials. However, size spherical shape make potentially useful as projectile weapons, a...

Following the successful development of a multiple-drive electrical impedance tomography system OXPACT-II featuring voltage-driven current method for in vitro studies, research work currently being undertaken at EIT group Oxford is aimed developing real-time adaptive system, called Brookes Adaptive Current Tomograph Mark-III (OXBACT-III) which will operate several frequencies between 10-160 kHz. The objective this to enable clinical studies be based on method. One most important issues...

G. P. Bingham, R. C. Schmidt, and L. D. Rosenblum (1989) found that, by hefting objects of different sizes weights, people could choose the optimal weight in each size for throwing to a maximum distance. In Experiment 1, authors replicated this result. Bingham et al. hypothesized that is smart mechanism allows be perceived context dynamics. This hypothesis entails 2 assumptions. First, hand required information about hand. The tested confirmed Experiments 3. Second, are determined dynamics...