Augmented feedback of experienced and less experienced volleyball coaches: A preliminary investigation

2010 ◽  
Vol 38 (4) ◽  
pp. 453-460 ◽  
Author(s):  
Laura Bortoli ◽  
Maurizio Bertollo ◽  
Giovanni Messina ◽  
Roberto Chiariotti ◽  
Claudio Robazza
Keyword(s):  
Female Athletes ◽  
Preliminary Investigation ◽  
Communication Patterns ◽  
Augmented Feedback ◽  
Effective Coaching

The purpose of the study was to identify effective coaching communication patterns by contrasting the augmented feedback of experienced and inexperienced coaches. Nine experienced and 9 inexperienced volleyball instructors (4 men and 5 women in each group) were videotaped while coaching 11- to 14-year-old female athletes. Analysis of the videotaped behaviors revealed that, compared to the feedback of inexperienced instructors, the feedback of experienced coaches was more specific, verbal, negatively evaluative, related to previous feedback, and provided more often during performance. From an applied perspective, our findings can be used to improve coaches' awareness – and the effectiveness – of their interactive skills.

Preliminary investigation of a multimodal enhanced brain function index among high school and collegiate concussed male and female athletes

2020 ◽  
Vol 48 (4) ◽  
pp. 442-449
Author(s):  
Tracey Covassin ◽  
Amanda L. McGowan ◽  
Abigail C. Bretzin ◽  
Morgan Anderson ◽  
Kyle Michael Petit ◽  
...  
Keyword(s):  
High School ◽  
Brain Function ◽  
Female Athletes ◽  
Preliminary Investigation ◽  
Male And Female ◽  
Function Index

scholarly journals Effects of Task-Specific Augmented Feedback on Deficit Modification During Performance of the Tuck-Jump Exercise

2013 ◽  
Vol 22 (1) ◽  
pp. 7-18 ◽  
Author(s):  
Benjamin W. Stroube ◽  
Gregory D. Myer ◽  
Jensen L. Brent ◽  
Kevin R. Ford ◽  
Robert S. Heidt ◽  
...  
Keyword(s):  
Risk Factors ◽  
Outcome Measures ◽  
Female Athletes ◽  
Controlled Trial ◽  
Acl Injury ◽  
Treadmill Running ◽  
Control Group ◽  
Augmented Feedback ◽  
Jump Exercise ◽  
Specific Feedback

Context:Anterior cruciate ligament (ACL) injuries are prevalent in female athletes. Specific factors have possible links to increasing a female athlete’s chances of suffering an ACL injury. However, it is unclear if augmented feedback may be able to decrease possible risk factors.Objective:To compare the effects of task-specific feedback on a repeated tuck-jump maneuver.Design:Double-blind randomized controlled trial.Setting:Sports-medicine biodynamics center.Patients:37 female subjects (14.7 ± 1.5 y, 160.9 ± 6.8 cm, 54.5 ± 7.2 kg).Intervention:All athletes received standard off-season training consisting of strength training, plyometrics, and conditioning. They were also videotaped during each session while running on a treadmill at a standardized speed (8 miles/h) and while performing a repeated tuck-jump maneuver for 10 s. The augmented feedback group (AF) received feedback on deficiencies present in a 10-s tuck jump, while the control group (CTRL) received feedback on 10-s treadmill running.Main Outcome Measures:Outcome measurements of tuck-jump deficits were scored by a blinded rater to determine the effects of group (CTRL vs AF) and time (pre- vs posttesting) on changes in measured deficits.Results:A significant interaction of time by group was noted with the task-specific feedback training (P = .03). The AF group reduced deficits measured during the tuck-jump assessment by 23.6%, while the CTRL training reduced deficits by 10.6%.Conclusions:The results of the current study indicate that task-specific feedback is effective for reducing biomechanical risk factors associated with ACL injury. The data also indicate that specific components of the tuck-jump assessment are potentially more modifiable than others.

Voices of Singapore national beach volleyball female athletes: What is an ideal coach?

2020 ◽  
Vol 15 (5-6) ◽  
pp. 642-652
Author(s):  
Ee Shan Lau ◽  
Ho Jin Chung ◽  
Michael Chia Yong Hwa
Keyword(s):  
Role Model ◽  
Female Athletes ◽  
Great Influence ◽  
Development Communication ◽  
Training Environment ◽  
Male Athletes ◽  
Idealized Influence ◽  
Effective Coaching ◽  
Transformational Coaching ◽  
Coaching Styles

A coach has a great influence on athletes’ performance and development. Communication and coaching styles that work with male athletes may not be effective in female athletes. The alignment of coaching to the preferences of female athletes is important for effective coaching and their holistic development. Therefore, it is essential to understand how female athletes perceive an ideal coach. The purpose of this research is to uncover how Singapore national beach volleyball female athletes voice about an ideal coach. Seven Singapore national beach volleyball female athletes were interviewed. Thematic analysis was used to analyze the data. The three main themes are – understanding the female athletes, being a role model with responsibility, and possessing rich experience as a coach and athlete. The three main themes that were developed from the voices of the Singapore national beach volleyball female athletes are supported by the literature on transformational coaching in terms of these components: idealized influence and individualized consideration. The findings of this research could help to establish a more comfortable, trusting and well-communicated training environment for female athletes.

Surface ultrastructure of danazol treated rat endometrium: A SEM study

1983 ◽  
Vol 41 ◽  
pp. 556-557
Author(s):  
R.P. Apkarian ◽  
J.S. Sanfilippo
Keyword(s):  
Cross Sections ◽  
Reproductive Tract ◽  
Preliminary Investigation ◽  
Breast Disease ◽  
Distal Segment ◽  
Uterine Horn ◽  
Female Reproductive Tract ◽  
Ultrastructural Changes ◽  
Cycle Phase ◽  
Sprague Dawley

The synthetic androgen danazol, is an isoxazol derivative of ethisterone. It is utilized in the treatment of endometriosis, fibrocystic breast disease, and has a potential use as a contraceptive. A study was designed to evaluate the ultrastructural changes associated with danazol therapy in a rat model. The preliminary investigation of the distal segment of the rat uterine horn was undertaken as part of a larger study intended to elucidate the effects of danazol on the female reproductive tract.Cross-sections (2-3 mm in length) of the distal segment of the uterine horn from sixteen Sprague-Dawley rats were prepared for SEM. Ten rats in estrus served as controls and six danazol treated rats were noted to have alterations of the estrus cycle i.e. a lag in cycle phase or noncycling patterns. Specimens were fixed in 3% glutaraldehyde in 0.05M phosphate buffer containing CaCl2 at pH 7.0-7.4 and chilled to 4°C. After a brief wash in distilled water, specimens were passed through a graded series of ethanol, critical point dryed in CO2 from absolute ethanol, and coated with 6nm Au. Observations were made with an IS1-40 SEM operated at 15kV.

A Comparison of the Ultrastructural Morphology of Hepatic Necrosis in BDF1 Mice

1981 ◽  
Vol 39 ◽  
pp. 586-587
Author(s):  
Becky Jackson
Keyword(s):  
Endoplasmic Reticulum ◽  
Smooth Endoplasmic Reticulum ◽  
Preliminary Investigation ◽  
Hepatic Necrosis ◽  
Hepatic Tissue ◽  
Pronounced Increase ◽  
Glycogen Store ◽  
Ultrastructural Morphology ◽  
Mitochondrial Integrity ◽  
Glycogen Stores

Preliminary investigation has indicated similarity in hepatic ultrastructural morphology in nutritional deprivation, and cyanide induced hepatic necrosis. Analysis of hepatic tissue has indicated disruption of intracellular membranes, specifically, reduction in rough endoplasmic reticulum (RER) mitochondrial integrity, and glycogen stores. An increase in smooth endoplasmic reticulum (SER) portion was observed.To further investigate the apparent equivalence of necrotic morphology, ultrastructura1ly, BDF1 mice were subjected to senescence, nutritional deprevation, potassium cyanide (KCN) induced toxemia, and acetaminophen induced toxemia. Controls were utilized to ellucidate non-necrotic hepatocellular normals. U1trastructura1 investigation of controls (Fig. 1) shows densely granular RER, abundant glycogen stores, and morphologically normal mitochondria. Subjects with acetaminophen induced necrosis exhibit reduced normal RER with increased levels of dialated, vesicular RER in apparent conversion to SER (Fig. 2), loss of mitochondrial integrity, and glycogen store reduction. Senescent subjects exhibit a pronounced increase in SER and loss of glycogen store. (Fig. 3). Investigation of the senescent SER at high magnification (Fig. 5) indicates that the SER is arising from degranulating and vesiculating RER.

Ultrastructural Effects of Acute Kepone Treatment in Rats

1976 ◽  
Vol 34 ◽  
pp. 286-287
Author(s):  
Richard L. Klein ◽  
Åsa K. Thureson-Klein ◽  
Harihara M. Mehendale
Keyword(s):  
Neurological Disorders ◽  
Corn Oil ◽  
Preliminary Investigation ◽  
Reproductive Capacity ◽  
Ultrastructural Changes ◽  
Lipid Deposition ◽  
Severe Toxicity ◽  
Sprague Dawley ◽  
Ether Anesthesia ◽  
Sprague Dawley Rats

KeponeR (decachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalen-2-one) is an insecticide effective against ants and roaches. It can cause severe toxicity in fishes, birds, rodents and man. Prominent effects include hepatic lipid deposition and hypertrophy, impairment of reproductive capacity and neurological disorders. Mitochondrial oligomycin-sensitive Mg2+-ATPase is also inhibited. The present study is a preliminary investigation of tissue ultrastructural changes accompanying physiological signs of acute toxicity, which after two days treatment include: pronounced hypersensitivity and tremor, various degrees of anorexia and adipsia, and decreased weight gain.Three different series of adult male Sprague-Dawley rats (Charles River or CD-I) were treated by intubation with Kepone in corn oil at a dose of 50 mg per kg for 3 successive days or at 200 ppm in food for 8 days. After ether anesthesia, rats were immediately perfused via a cannula in the left ventricle with 4% p-formaldehyde and 0.5% glutaraldehyde in Millonig's phosphate buffer at pH 7.2 for 20-30 min at 22°C.

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