Metabolic Power Demands of Rugby League Match Play

2015 ◽  
Vol 10 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Tom Kempton ◽  
Anita Claire Sirotic ◽  
Ermanno Rampinini ◽  
Aaron James Coutts
Keyword(s):  
High Power ◽  
High Speed ◽  
Power Distance ◽  
Rugby League ◽  
Metabolic Power ◽  
Match Play ◽  
Global Positioning ◽  
High Power Distance ◽  
The Difference ◽  
Gps Devices

Purpose:To describe the metabolic demands of rugby league match play for positional groups and compare match distances obtained from high-speed-running classifications with those derived from high metabolic power.Methods:Global positioning system (GPS) data were collected from 25 players from a team competing in the National Rugby League competition over 39 matches. Players were classified into positional groups (adjustables, outside backs, hit-up forwards, and wide-running forwards). The GPS devices provided instantaneous raw velocity data at 5 Hz, which were exported to a customized spreadsheet. The spreadsheet provided calculations for speed-based distances (eg, total distance; high-speed running, >14.4 km/h; and very-highspeed running, >18.1 km/h) and metabolic-power variables (eg, energy expenditure; average metabolic power; and high-power distance, >20 W/kg).Results:The data show that speed-based distances and metabolic power varied between positional groups, although this was largely related to differences in time spent on field. The distance covered at high running speed was lower than that obtained from high-power thresholds for all positional groups; however, the difference between the 2 methods was greatest for hit-up forwards and adjustables.Conclusions:Positional differences existed for all metabolic parameters, although these are at least partially related to time spent on the field. Higher-speed running may underestimate the demands of match play when compared with high-power distance—although the degree of difference between the measures varied by position. The analysis of metabolic power may complement traditional speed-based classifications and improve our understanding of the demands of rugby league match play.

Player Activity Profiles in the Australian Second-Tier Rugby League Competitions

2016 ◽  
Vol 11 (6) ◽  
pp. 816-823
Author(s):  
Joanne Hausler ◽  
Mark Halaki ◽  
Rhonda Orr
Keyword(s):  
High Speed ◽  
New South ◽  
Rugby League ◽  
Relative Distance ◽  
Match Play ◽  
South Wales ◽  
Global Positioning ◽  
Second Tier ◽  
Sprinting Speed ◽  
Very High

Purpose:To investigate activity profiles of Australian rugby league players during match play by competition, position, and match outcome in the New South Wales (NSW) second-tier competitions.Methods:Eighteen NSW Cup (NSWC) and 22 National Youth Competition (NYC) players, participating in this prospective cohort study, were categorized into 3 positional groups: forwards, adjustables, and outside backs. Global positioning system devices were used to examine activity profiles (distance and relative distance covered in walking, jogging, moderate, high, very high, and sprinting speed zones and quantification of high-speed movement) during match play in 21 NSWC and 22 NYC matches (N = 339 files).Results:NSWC players performed more sprints (36.5 ± 9.3 vs 28.4 ± 9.2) and greater relative distance in moderate speed zones (18.4 ± 3.2 vs 15.8 ± 3.1 m/min) than NYC. NSWC outside backs covered greater relative distance in jogging (29.4 ± 2.9 vs 24.8 ± 2.7 m/min) and moderate speed zones (17.0 ± 2.6 vs 12.8 ± 2.8 m/min) than their NYC counterparts. Adjustables performed more sprints (39.4 ± 10.1 vs 27.0 ± 9.2), high-intensity accelerations (3.7 ± 1.4 vs 1.9 ± 1.4), and relative distance (84.8 ± 4.3 vs 88.6 ± 4.8 m/min) than forwards and greater relative distance (81.5 ± 3.8 m/min) and sprints (31.0 ± 8.0) than outside backs. Adjustables recorded greater relative distance (19.8 m/min) in moderate speed zones than forwards (16.7 ± 3.1 m/min) and outside backs (14.9 ± 2.7 m/min). Adjustables covered ~685 m more than outside backs during a win.Conclusions:This is the first study to document the activity profiles of the NSW second-tier rugby league competition. The findings underscore the elevated match demands of adjustables and indicate higher intensity of play in NSWC than NYC that may more closely resemble the demands of National Rugby League match play.

scholarly journals Relationship Between Internal and External Training Load in Field Hockey

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Katrine Tuft ◽  
Mykolas Kavaliauskas
Keyword(s):  
High Power ◽  
High Speed ◽  
Power Distance ◽  
Training Load ◽  
Field Hockey ◽  
Total Distance ◽  
Perceived Wellness ◽  
External Training ◽  
High Power Distance ◽  
Training Efficiency

Training load monitoring in team sports is important in order to plan and evaluate training strategies and ensure optimal performance. Integration of internal and external training load measures into a single training efficiency metric reduces the effect of confounding variables on training loads. The purpose of this study was to generate a training efficiency metric to evaluate in-season field hockey training. Further, the relationship between players’ perceived wellness the training efficiency metric was determined. Internal (training impulse and session rating of perceived exertion; TRIMP and sRPE) and external (total distance, high-speed distance, acceleration load, high-power distance, metabolic work, mechanical work, and impulse) training load was collected over a 6-week period for 11 male national level field hockey players (21.1 ± 1.2 years, 178.7 ± 8.6 cm, 4.6 ± 6.3 kg). The relationships between internal and external training load were assessed, and two training efficiency models were generated through mixed model analyses using sRPE and TRIMP. Subsequently, the relationships between training efficiency and perceived wellness were examined. The statistical analyses determined that total distance, high-speed distance, high-power distance, and metabolic work (r = 0.311-0.573) were included in the TRIMP training efficiency model. The sRPE training efficiency model included total distance, high-speed distance, high-power distance, metabolic work, and mechanical work (r = 0.329-0.757). Moreover, neither of the training efficiency models were related to daily cumulative wellness scores (TRIMP: r = -0.046; p = 0.336; sRPE: r = -0.034; p = 0.370). The study showed that the sRPE training efficiency model provided a better reflection of in-season field hockey training demands than the TRIMP model. Additionally, practitioners are not advised to adjust training based on acute changes in players’ perceived wellness.

scholarly journals Movement and Physiological Demands of Australasian National Rugby League Referees

2016 ◽  
Vol 11 (8) ◽  
pp. 1080-1087 ◽  
Author(s):  
Amy Brightmore ◽  
John O’Hara ◽  
Kevin Till ◽  
Steve Cobley ◽  
Tate Hubka ◽  
...  
Keyword(s):  
Global Positioning System ◽  
High Speed ◽  
Rugby League ◽  
Effect Sizes ◽  
Data Sets ◽  
Positioning System ◽  
Physiological Variable ◽  
Match Play ◽  
Global Positioning ◽  
Physiological Demands

Purpose:To evaluate the movement and physiological demands of Australasian National Rugby League (NRL) referees, officiating with a 2-referee (ie, lead and pocket) system, and to compare the demands of the lead and pocket referees. Methods:Global positioning system devices (10 Hz) were used to obtain 86 data sets (lead, n = 41; pocket, n = 45) on 19 NRL referees. Total distance, relative distance covered, and heart rate per half and across match play were examined within and between referees using t tests. Distance, time, and number of movement “efforts” were examined in 6 velocity classifications (ie, standing <0.5, walking 0.51–2.0, jogging 2.01–4.0, running 4.01–5.5, high-speed running 5.51–7.0, and sprinting >7.0 m/s) using analysis of variance. Cohen d effect sizes are reported. Results:There were no significant differences between the lead and pocket referees for any movement or physiological variable. There was an overall significant (large, very large) effect for distance (% distance) and time (% time) (P < .001) between velocity classifications for both the lead and pocket referees. Both roles covered the largest distance and number of efforts at velocities of 0.51–2.0 m/s and 2.01–4.0 m/s, which were interspersed with efforts >5.51 m/s. Conclusions:Findings highlight the intermittent nature of rugby league refereeing but show that there were no differences in the movement and physiological demands of the 2 refereeing roles. Findings are valuable for those responsible for the preparation, training, and conditioning of NRL referees and to ensure that training prepares for and simulates match demands.

Remediation of the challenges of reporting corporate scandals in governance

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sam Kris Hilton ◽  
Helen Arkorful
Keyword(s):  
High Power ◽  
Power Distance ◽  
Code Of Conduct ◽  
Primary Data ◽  
Governance System ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Content Type ◽  
Corporate Scandals ◽  
High Power Distance

Purpose The barrage of corporate scandals has become pervasive such that it collapsed high-profile organizations worldwide. Prior studies show that reporters of corporate scandals encounter a number of challenges which discourages them from disclosing wrongful acts to appropriate authorities to effect action. Thus, this study aims to examine the remediation of the challenges of reporting corporate scandals in governance. Design/methodology/approach The study used cross-sectional survey design. Primary data was obtained from 400 employees of selected organizations and analyzed using descriptive statistics, correlation and regression techniques in Statistical Package of Social Science. Findings The results confirm that reporters of corporate scandals are confronted with challenges such as victimization, fear, suspension/dismissal, sideline and high power distance. However, these challenges can be remediated through award, code of conduct, free expression, participation/consultation and safeguard regulations to encourage and protect reporters of corporate scandals. Practical implications The findings imply that there should be an award scheme for reporters, and this must be made known to all employees. Furthermore, code of conduct for employees should include reporting of scandals together with its associated benefits and sanctions. Also, organizations would have to practice consultative/participatory governance system to minimize the effect of high power distance. Finally, regulations should be enacted and enforced to safeguard reporters of corporate scandals. Originality/value This research consolidated the challenges associated with reporting corporate scandals and provides remedies to curtail such challenges so as to encourage employees to report corporate scandals.

Spear phishing in organisations explained

2017 ◽  
Vol 25 (5) ◽  
pp. 593-613 ◽  
Author(s):  
Jan-Willem Bullee ◽  
Lorena Montoya ◽  
Marianne Junger ◽  
Pieter Hartel
Keyword(s):  
High Power ◽  
Design Methodology ◽  
Power Distance ◽  
Demographic Variables ◽  
Content Type ◽  
Awareness Campaigns ◽  
Personally Identifiable Information ◽  
High Power Distance ◽  
Effect Of Age ◽  
Practical Implications

Purpose The purpose of this study is to explore how the opening phrase of a phishing email influences the action taken by the recipient. Design/methodology/approach Two types of phishing emails were sent to 593 employees, who were asked to provide personally identifiable information (PII). A personalised spear phishing email opening was randomly used in half of the emails. Findings Nineteen per cent of the employees provided their PII in a general phishing email, compared to 29 per cent in the spear phishing condition. Employees having a high power distance cultural background were more likely to provide their PII, compared to those with a low one. There was no effect of age on providing the PII requested when the recipient’s years of service within the organisation is taken into account. Practical implications This research shows that success is higher when the opening sentence of a phishing email is personalised. The resulting model explains victimisation by phishing emails well, and it would allow practitioners to focus awareness campaigns to maximise their effect. Originality/value The innovative aspect relates to explaining spear phishing using four socio-demographic variables.

Linking authoritarian leadership to employee organizational embeddedness, LMX and performance in a high-power distance culture: a mediation-moderated analysis

2020 ◽  
Vol 13 (3) ◽  
pp. 393-411 ◽  
Author(s):  
C. Muhammad Siddique ◽  
Hinna Fatima Siddique ◽  
Shama Urooj Siddique
Keyword(s):  
Job Satisfaction ◽  
High Power ◽  
Negative Impact ◽  
Power Distance ◽  
Work Outcomes ◽  
Content Type ◽  
Authoritarian Leadership ◽  
High Power Distance ◽  
Organizational Embeddedness ◽  
And Performance

PurposeThis study has two primary objectives: (1) to shed light on the mechanism by which authoritarian leadership unfolds its impact on such critical aspects of subordinates' work lives as job satisfaction and in-role performance and (2) to identify the moderating conditions which place limits on the impact of authoritarian leadership on work outcomes.Design/methodology/approachData were collected on 552 supervisor-subordinate dyads from the United Arab Emirates. A series of research hypotheses were tested using a mixed-method statistical approach, including CFA and moderated hierarchical regression analysis.FindingsAs predicted, authoritarian leadership exerts negative impact on subordinates' job satisfaction and performance through poor quality LMX and weak employee organizational embeddedness. Both LMX and employee embeddedness mediated the negative relationship between authoritarian leadership and outcome measures while power distance moderated the relationship of authoritarian leadership with LMX and employee organizational embeddedness. Low power distance orientation was found to exacerbate the negative impact of authoritarian leadership on the quality of both LMX relationships and employee embeddedness.Research limitations/implicationsThe study shares limitations of most studies cast in the survey research design.Practical implicationsThe findings underscore the importance of work environment in nurturing high quality LMX relationships and employee organizational embeddedness to buffer the negative effect of authoritarian leadership on subordinates' job satisfaction and performance. In high power distance cultures where workplace inequality is largely rationalized, subordinates who perceive their leaders as authoritarian tend to show low job satisfaction and poor in-role performance. These findings illustrate the importance of management intervention in the early stage of recruitment and selection to attract managers receptive to egalitarian leadership approaches who can equip subordinates with appropriate resources to enhance their job satisfaction and performance outcomes.Originality/valueThe study offers valuable new insights into the mechanism by which authoritarian leadership influences work outcomes in a high-power distance culture. It represents first systematic effort in the Middle Eastern context to identify the conditions that mediate the linkage between authoritarian leadership and work outcomes. The study adds value to the literature by investigating the moderating role of power distance at the individual level of analysis. It detects significant differences in subordinates' perception of power inequality in the workplace in a culture viewed as a high-power distance culture and illustrates how such differences in turn shape the quality of LMX and employee organizational embeddedness.

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