The affect of Power Balance® wrist bands on dynamic balance of elite Australian Rules Football players

2011 ◽  
Vol 14 ◽  
pp. e38
Author(s):  
T. Furness ◽  
C. Joseph ◽  
D. Buttifant ◽  
G. Naughton ◽  
J. Crowe
Keyword(s):  
Dynamic Balance ◽  
Power Balance ◽  
Football Players ◽  
Australian Rules Football ◽  
Wrist Bands

scholarly journals A Novel Method of Assessment for Monitoring Neuromuscular Fatigue in Australian Rules Football Players

2019 ◽  
Vol 14 (5) ◽  
pp. 598-605 ◽  
Author(s):  
Joel Garrett ◽  
Stuart R. Graham ◽  
Roger G. Eston ◽  
Darren J. Burgess ◽  
Lachlan J. Garrett ◽  
...  
Keyword(s):  
High Performance ◽  
Recovery Phase ◽  
Neuromuscular Fatigue ◽  
Football Players ◽  
Alternative Method ◽  
Jump Test ◽  
Australian Rules Football ◽  
Novel Method ◽  
Run Test ◽  
Method Of Assessment

Purpose: To compare the sensitivity of a submaximal run test (SRT) with a countermovement-jump test (CMJ) to provide an alternative method of measuring neuromuscular fatigue (NMF) in high-performance sport. Methods: A total of 23 professional and semiprofessional Australian rules football players performed an SRT and CMJ test prematch and 48 and 96 h postmatch. Variables from accelerometers recorded during the SRT were player load 1D up (vertical vector), player load 1D side (mediolateral vector), and player load 1D forward (anteroposterior vector). Meaningful difference was examined through magnitude-based inferences (effect size [ES]), with reliability assessed as typical error of measurements expressed as coefficient of variance. Results: A small decrease in CMJ height, ES −0.43 ± 0.39 (likely), was observed 48 h postmatch before returning to baseline 96 h postmatch. This was accompanied by corresponding moderate decreases in the SRT variables player load 1D up, ES −0.60 ± 0.51 (likely), and player load 1D side, ES −0.74 ± 0.57 (likely), 48 h postmatch before also returning to prematch baseline. Conclusion: The results suggest that in the presence of NMF, players use an alternative running profile to produce the same external output (ie, time). This indicates that changes in accelerometer variables during an SRT can be used as an alternative method of measuring NMF in high-performance Australian rules football and provides a flexible option for monitoring changes in the recovery phase postmatch.

Effect of Biological Maturation on Performance of the Athletic Ability Assessment in Australian Rules Football Players

2021 ◽  
Vol 16 (1) ◽  
pp. 28-36
Author(s):  
Daniel K. Rogers ◽  
Ian McKeown ◽  
Gaynor Parfitt ◽  
Darren Burgess ◽  
Roger G. Eston
Keyword(s):  
Statistical Significance ◽  
A Priori ◽  
Developmentally Appropriate ◽  
Peak Height ◽  
Height Velocity ◽  
Football Players ◽  
Peak Height Velocity ◽  
Athletic Ability ◽  
Biological Maturation ◽  
Australian Rules Football

Purpose: To determine the effect of biological maturation on athletic movement competency as measured using the Athletic Ability Assessment-6. Methods: Fifty-two junior Australian Rules football players were split into 3 groups based on proximity to peak height velocity, while 46 senior players were split into 2 groups based on playing status. The subjects completed the Athletic Ability Assessment-6 (inclusive of the overhead squat, double lunge, single-leg Romanian dead lift, push-up, and chin-up). All subjects were filmed and retrospectively assessed by a single rater. A 1-way analysis of variance and effect-size statistics (Cohen d) with corresponding 90% confidence intervals were used to describe between-groups differences in the component movement scores. The statistical significance was set a priori at P < .05. Results: There were significant between-groups differences for all component movements (P < .05). Post hoc testing revealed that older, more mature subjects possessed greater competency in all movements except the overhead squat. The effect sizes revealed predominantly moderate to very large differences in competency between the senior and junior groups (range of d [90% confidence interval]: 0.70 [0.06 to 1.30] to 3.01 [2.18 to 3.72]), with unclear to moderate differences found when comparing the 3 junior groups (0.08 [−0.50 to 0.65] to 0.97 [0.22–1.61]). Conclusions: The findings suggest that biological maturation may be associated with changes in athletic movement competency in youth Australian Rules football players. Therefore, it is recommended that strength and conditioning coaches monitor maturity status when working with 12- to 15-y-old players. This can allow for a comparison of an individual’s athletic movement competency to maturity-based standards and help guide developmentally appropriate training programs.

Do Not Pay Any Attention to the Umpires: Thought Suppression and Task-Relevant Focusing Strategies

2002 ◽  
Vol 24 (3) ◽  
pp. 306-319 ◽  
Author(s):  
Jeremy R. Dugdale ◽  
Robert C. Eklund
Keyword(s):  
Cognitive Load ◽  
Cognitive Processing ◽  
Thought Suppression ◽  
Football Players ◽  
Mental Control ◽  
Processing Theory ◽  
Negative Thoughts ◽  
Australian Rules Football ◽  
Ironic Effects ◽  
And Task

Two studies grounded in ironic-cognitive-processing theory were conducted to determine (a) whether ironic errors may be associated with efforts to exert mental control that typically occur in sport settings and (b) whether these potential ironic effects could be negated through the use of a task-relevant cue word to refocus one’s thoughts during suppression. Participants were asked to watch a videotape of a series of clips of Australian Rules Football players, coaches, and umpires. Study 1 revealed that participants were more aware of umpires when instructed not to pay attention to them. Contrary to expectations, however, ironic effects were not significantly magnified by the combination of high cognitive load and the instruction not to pay attention to the umpires. Results from Study 2 indicated that potential ironic effects could be negated when individuals were given a task-relevant cue word to focus on when suppressing unwanted or negative thoughts. Overall, support for ironic processing theory was found in Studies 1 and 2 in this investigation.

scholarly journals Relationship Between a Modified Thomas Test and Leg Range of Motion in Australian-Rules Football Kicking

2003 ◽  
Vol 12 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Warren Young ◽  
Peter Clothier ◽  
Leonie Otago ◽  
Lyndell Bruce ◽  
David Liddell
Keyword(s):  
Range Of Motion ◽  
Outcome Measures ◽  
Knee Flexion ◽  
Flexion Angle ◽  
Football Players ◽  
Knee Flexion Angle ◽  
Australian Rules Football ◽  
Maximum Effort ◽  
Australian Football ◽  
Hip Extension

Context:Flexibility tests are sometimes thought to be related to range of motion in dynamic activities, but such a relationship remains to be determined.Objective:To determine the correlation between flexibility and hip and knee angles in Australian football kicking.Design:Correlation.Setting:Biomechanics laboratory.Participants:16 Australian Rules football players.Main Outcome Measures:Hip and knee angles of the preferred kicking leg in a relaxed position were determined with a modified Thomas test. Maximum hip extension, the knee-flexion angle in this position, the maximum knee-flexion angle, and the hip angle at this position during the swing phase of maximum-effort drop-punt kicks were determined.Results:Significant correlations were found between hip flexibility and maximum hip extension (r = .65, P < .01) and hip angle at the maximum knee-flexion angle (r = .70, P < .01).Conclusions:The data indicate a moderate association between hip flexibility and hip angles during kicking.

scholarly journals Dynamic Balance Performance and Noncontact Lower Extremity Injury in College Football Players

2013 ◽  
Vol 5 (5) ◽  
pp. 417-422 ◽  
Author(s):  
Robert J. Butler ◽  
Michael E. Lehr ◽  
Michael L. Fink ◽  
Kyle B. Kiesel ◽  
Phillip J. Plisky
Keyword(s):  
Lower Extremity ◽  
Dynamic Balance ◽  
College Football ◽  
Lower Extremity Injury ◽  
Football Players ◽  
Extremity Injury ◽  
Balance Performance

scholarly journals Positional differences in anticipation timing, reaction time and dynamic balance of American football players

2020 ◽  
Vol 24 (5) ◽  
pp. 227-239
Author(s):  
Halil İ. Ceylan ◽  
Ahmet R. Günay
Keyword(s):  
Reaction Time ◽  
Dynamic Balance ◽  
Absolute Error ◽  
American Football ◽  
Football Players ◽  
Balance Performance ◽  
Significant Difference ◽  
Visual Reaction ◽  
Test Result ◽  
Anterior Posterior

Purpose: The aim of this study was to compare the coinciding anticipation timing (CAT), reaction time and dynamic balance performances of American football players according to their playing positions. Material: Thirty-five American football players, who train at least 3 days a week, and compete in Universities Protected Football 1st League, participated in this study, voluntarily. The players were divided into two playing positions: offensive (17 players, mean age: 20.76 ± 1.30 years) and defensive (18 players, mean age: 21.94 ± 2.87 years). The CAT at different stimulus speeds (6 mph, 12 mph), reaction time (visual, auditory, mixed), and dynamic balance performance (anterior-posterior, medial-lateral, perimeter lenght) were measured in the laboratory environment. The CAT, reaction time, and dynamic balance performance of players were determined by Bassin Anticipation Timer, Newtest 1000, and Technobody Prokin-200, respectively. Results: The data obtained were analyzed in SPSS (20.0) program. Firstly, the raw data for CAT performance (6mph, 12 mph) were converted to absolute error score. According to Shapiro-Wilk test result, the all data showed normal distribution. Independent Sample t test was used to determine the differences between the two playing positions. In addition, the effect size between the two playing positions was calculated in parameters with showing significant differences, and Cohen’s d (1988) values were taken into account. Compared with the defensive players (20.15±3.81 ms), the absolute error scores at fast stimulus speeds (12 mph) of offensive players (17.45±3.48 ms) was found to be significantly lower (t(33) =-2.181, p=.036). The visual reaction time of offensive players (318.11± 17.47 ms) was significantly shorter than defensive players (340.58± 32.60 ms, t(26322) =-2.560, p=.017). In terms of dynamic balance parameters such as perimeter lenght, anterior-posterior, and medial-lateral, there was no statistically significant difference between the playing positions (p>0.05). Conclusions: Perceptual-cognitive characteristics such as CAT, and reaction time performance differ according to the playing positions, and this difference may be related to the physical, and cognitive demands required by their playing positions.

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