Expertise- and Tempo-Related Performance Differences in Unimanual Drumming

Motor Control ◽  
2021 ◽  
pp. 1-36
Author(s):  
Bryony Buck ◽  
Scott Beveridge ◽  
Gerard Breaden Madden ◽  
Hans-Christian Jabusch
Keyword(s):  
Multivariate Analysis ◽  
Motion Capture ◽  
Analysis Of Variance ◽  
High Speed ◽  
Multivariate Analysis Of Variance ◽  
3D Motion ◽  
Precise Control ◽  
Timing Variability ◽  
Main Effects ◽  
3D Motion Capture

Background: High-speed drumming requires precise control over the timing, velocity, and magnitude of striking movements. Aim: To examine effects of tempo and expertise on unaccented repetitive drumming performance using 3D motion capture. Methods: Expert and amateur drummers performed unimanual, unaccented, repetitive drum strikes, using their dominant right hand, at five different tempi. Performance was examined with regard to timing variability, striking velocity variability, the ability to match the prescribed tempo, and additional variables. Results: Permutated multivariate analysis of variance (PERMANOVA) revealed significant main effects of tempo (p < .001) and expertise (p <.001) on timing variability and striking velocity variability; low timing variability and low striking velocity variability were associated with low/medium tempo as well as with increased expertise. Individually, improved precision appeared across an optimum tempo range. Precision was poorest at maximum tempo (400 hits per minute) for precision variables. Conclusions: Expert drummers demonstrated greater precision and consistency than amateurs. Findings indicate an optimum tempo range that extends with increased expertise.

scholarly journals High Speed 3D Motion Capture System for Flying Golf Ball

2011 ◽  
Vol 19 ◽  
pp. 214-219 ◽  
Author(s):  
Yi-Hong Lin ◽  
Wen-Hong Wu ◽  
Wei-Zhe Huang
Keyword(s):  
Motion Capture ◽  
High Speed ◽  
Golf Ball ◽  
Motion Capture System ◽  
3D Motion ◽  
3D Motion Capture

scholarly journals Analysis of Lower-hand Wrist Flexion and Twist of the Mallet Head in a Croquet Shot

2020 ◽  
Author(s):  
Jenny Clarke
Keyword(s):  
Motion Capture ◽  
High Speed ◽  
Wrist Pain ◽  
Wrist Flexion ◽  
High Definition ◽  
Wrist Motion ◽  
3D Motion ◽  
High Definition Video ◽  
The Relationship ◽  
3D Motion Capture

This study investigated the relationship between wrist flexion and the dynamics of the swing of a croquet mallet. Twenty seven subjects participated in a study which used 3D motion capture equipment and high speed and high-definition video to determine if there is a correlation between the lateral twist of a croquet player&rsquo;s swing and the flexion of the wrist during that swing. The study found a significant correlation between the amount of flexion of the wrist from the start of the stroke to the top of the backswing and the twist of the mallet head at the top of the backswing (r=0.330, p&lt;0.01). The methodology and findings are relevant to all sports where minimising wrist flexion is favourable for improving consistency of stroke making. Additionally, reducing wrist motion in stroke-making may reduce the incidence of wrist pain and injury in croquet, further supporting recommendations to reduce the amount of wrist flexion during the croquet swing.

Articulation Development in Preschool Children

1986 ◽  
Vol 29 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Kathryn W. Kenney ◽  
Elizabeth M. Prather
Keyword(s):  
Multivariate Analysis ◽  
Preschool Children ◽  
Analysis Of Variance ◽  
Repeated Measures ◽  
Multivariate Analysis Of Variance ◽  
Two Factors ◽  
Main Effects

The purpose of this study was to describe the consistency of productions of /θ, r, l, s, ∫, t∫, f, t, k/ in releasing and arresting position for 2 ½- to 5-year-old children. The Coarticulation Assessment in Meaningful Language (Kenney & Prather, 1984) was given to 360 children, 60 at each of six age levels. A four-way multivariate analysis of variance with repeated measures on the last two factors was used to test for main effects and interactions among age, sex, phoneme, and position. These children produced /θ, ∫, t∫, l, f/ with greater accuracy in the releasing position, but articulated /k, s, t/ at similar levels of accuracy in both positions. They produced /r/ with greater accuracy as a vocalic allophone. Further patterns and interactions are discussed.

scholarly journals Analysis of Lower Hand Wrist Flexion and Twist of the Mallet Head in a Croquet Shot

2020 ◽  
Vol 10 (12) ◽  
pp. 4192
Author(s):  
Jenny Clarke
Keyword(s):  
Motion Capture ◽  
High Speed ◽  
Wrist Pain ◽  
Wrist Flexion ◽  
High Definition ◽  
Wrist Motion ◽  
3D Motion ◽  
Golf Putting ◽  
The Relationship ◽  
3D Motion Capture

This study investigated the relationship between wrist flexion and the dynamics of the swing of a croquet mallet. Twenty-seven subjects participated in a study which used 3D motion capture equipment along with high-speed and high-definition video to determine if there is a correlation between the lateral twist of a croquet player’s swing and the flexion of the wrist during that swing. The study found a significant correlation between the amount of flexion of the wrist from the start of the stroke to the top of the backswing and the twist of the mallet head at the top of the backswing (r = 0.330; p < 0.01). The methodology and findings are relevant to all sports where minimising wrist flexion is favourable for improving the consistency of stroke-making (e.g., golf putting, darts and snooker). Additionally, reducing wrist motion in stroke-making may reduce the incidence of wrist pain and injury in croquet. This second point provides further encouragement for attempting to reduce the amount of wrist flexion during croquet swings.

Black Grandparents: Curriculum Development

1996 ◽  
Vol 43 (2) ◽  
pp. 119-134 ◽  
Author(s):  
Robert Strom ◽  
Shirley Strom ◽  
Pat Collinsworth ◽  
Paris Strom ◽  
Dianne Griswold
Keyword(s):  
Multivariate Analysis ◽  
Curriculum Development ◽  
Analysis Of Variance ◽  
Educational Program ◽  
Univariate Analysis ◽  
Multivariate Analysis Of Variance ◽  
Education Programs ◽  
Main Effects ◽  
Effective Analysis

The performance of Black grandparents was examined to determine the most suitable content for an educational program intended to assist them in their role. A sample of 626 non-consanguineous subjects included 204 grandparents, 128 parents, and 294 grandchildren. Each generation group completed a separate version of the Grandparent Strengths and Needs Inventory to identify the favorable qualities of grandparents and aspects of their relationships in which further growth was necessary. A combination of multivariate analysis of variance procedures, univariate analysis of variance tests, and t-tests were used to analyze scores, confirm results, and assist with interpretation of data. All groups described aspects of grandparents success and made known specific realms of learning that grandparents should acquire in order to become more effective. Analysis of the responses revealed significant main effects for generation, gender of grandchild, age of grandchild, and amount of time that grandparent and grandchild spent together. Considerations were identified for improving grandparent influence and guiding the development of grandparent education programs.

Effects of Employment Relationship, Response of Recipient and Sex of Rater on Perceptions of Sexual Harassment

1987 ◽  
Vol 65 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Tricia S. Jones ◽  
Martin S. Remland ◽  
Claire C. Brunner
Keyword(s):  
Multivariate Analysis ◽  
Sexual Harassment ◽  
Analysis Of Variance ◽  
Undergraduate Students ◽  
Employment Relationship ◽  
Multivariate Analysis Of Variance ◽  
Men And Women ◽  
Male Undergraduate ◽  
Main Effects ◽  
Univariate Analyses

The effects of the employment relationship (superior vs coworker), recipient's response (positive vs negative), and sex of the rater (male vs female) on perceptions of sexual harassment, appropriateness of the initiator's behavior, and appropriateness of the recipient's behavior were investigated. Subjects were 82 female and 76 male undergraduate students. The results of a 2 × 2 × 2 multivariate analysis of variance indicated main effects for response of the recipient and sex of the rater. Univariate analyses indicated that women rated the initiator less favorably than men, that men perceived the situation as more harassing and approved of the recipient more than women when the recipient's responses were positive, although there was no difference between men and women when the recipient's responses were negative.

Selflessness in Anorexia Nervosa as Reflected in the Rorschach Comprehensive System

2012 ◽  
Vol 33 (1) ◽  
pp. 78-93 ◽  
Author(s):  
Gili Curiel-Levy ◽  
Laura Canetti ◽  
Esti Galili-Weisstub ◽  
Myrna Milun ◽  
Eitan Gur ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Anorexia Nervosa ◽  
Analysis Of Variance ◽  
Clinical Observation ◽  
Comparison Group ◽  
Comprehensive System ◽  
Multivariate Analysis Of Variance ◽  
Rorschach Comprehensive System ◽  
Group A

This study examines the expression of selflessness – the tendency to ignore one’s own needs and serve others’ needs – in Rorschach protocols of women suffering from anorexia nervosa. The protocols of 35 women suffering from anorexia nervosa were compared to 30 protocols of a psychiatric comparison group. A multivariate analysis of variance over five variables (AG, PER, PHR, COP, and GHR) was significant: Anorexic patients showed higher characteristics of selflessness compared to the psychiatric comparison group. These findings contribute to the validation of the Rorschach technique and to the clinical observation of selflessness in anorexic patients, and they emphasize specific characteristics in the treatment of anorexia nervosa patients.

Gender differences in the Achilles tendon load during the fencing lunge

2014 ◽  
Vol 6 (3) ◽  
Author(s):  
Jonathan Kenneth Sinclair ◽  
Lindsay Bottoms
Keyword(s):  
Gender Differences ◽  
Achilles Tendon ◽  
Motion Capture ◽  
Tendon Injury ◽  
Force Platform ◽  
Motion Capture System ◽  
3D Motion ◽  
Loading Rates ◽  
Tendon Pathology ◽  
3D Motion Capture

AbstractRecent epidemiological analyses in fencing have shown that injuries and pain linked specifically to fencing training/competition were evident in 92.8% of fencers. Specifically the prevalence of Achilles tendon pathology has increased substantially in recent years, and males have been identified as being at greater risk of Achilles tendon injury compared to their female counterparts. This study aimed to examine gender differences in Achilles tendon loading during the fencing lunge.Achilles tendon load was obtained from eight male and eight female club level epee fencers using a 3D motion capture system and force platform information as they completed simulated lunges. Independent t-tests were performed on the data to determine whether differences existed.The results show that males were associated with significantly greater Achilles tendon loading rates in comparison to females.This suggests that male fencers may be at greater risk from Achilles tendon pathology as a function of fencing training/ competition.

A Controlled Study of Sensation Awareness and Verbal Disclosure for Regulation of Arousal and Anxiety

1992 ◽  
Vol 74 (1) ◽  
pp. 307-320 ◽  
Author(s):  
Stephen R. Scholle
Keyword(s):  
Multivariate Analysis ◽  
Analysis Of Variance ◽  
State Anxiety ◽  
Significant Interaction ◽  
Controlled Study ◽  
Multivariate Analysis Of Variance ◽  
Directed Attention ◽  
Self Talk ◽  
Anxiety Levels

Interactions of attention and verbalization were investigated for effects of self-reported arousal and state-anxiety. Levels of verbalization from silence through talking-without-a-listener to disclosure were compared while self-directed attention was manipulated for sensation versus general thoughts and feelings. Following a stimulus, disclosure of sensations was expected to reduce state anxiety and increase energetic arousal significantly more than disclosure of thoughts. Based on a randomly assigned sample of 120 men, a 3 × 2 × 2 multivariate analysis of variance indicated a significant interaction in the predicted directions. A significant interaction was also found for the 3 × 2 interaction for energetic arousal. For state anxiety means were in the predicted direction. Results indicate that verbalization of sensations is more energizing and calming than silence, while for general thought, silence is more energizing and calming than verbalization. The results suggest efficacy in reframing self-talk to quiet awareness and in communicating sensed distinctions as they emerge.

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