Correction to: Quantifying the Collision Dose in Rugby League: A Systematic Review, Meta-analysis, and Critical Analysis

Naughton, Mitchell; Jones, Ben; Hendricks, Sharief; D, King; Murphy, Alexander B.; Cummins, Cloe

doi:10.1186/s40798-020-00263-w

Cited by 11 publications

(5 citation statements)

References 63 publications

(164 reference statements)

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“…Rugby league is a contact sport played around the world at different levels. Due to the high number of collisions that players are involved in [1], there is a risk of both musculoskeletal and concussion injuries [2]. Concussion injuries and head acceleration exposure in rugby are a concern owing to the potential long-term consequences [3], but have yet to be fully investigated.…”

Section: Introductionmentioning

confidence: 99%

Quantification of Head Acceleration Events in Rugby League: An Instrumented Mouthguard and Video Analysis Pilot Study

Tooby

Weaving

Al-Dawoud³

et al. 2022

Sensors

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Instrumented mouthguards (iMG) were used to collect head acceleration events (HAE) in men’s professional rugby league matches. Peak linear acceleration (PLA), peak angular acceleration (PAA) and peak change in angular velocity (ΔPAV) were collected using custom-fit iMG set with a 5 g single iMG-axis recording threshold. iMG were fitted to ten male Super League players for thirty-one player matches. Video analysis was conducted on HAE to identify the contact event; impacted player; tackle stage and head loading type. A total of 1622 video-verified HAE were recorded. Approximately three-quarters of HAE (75.7%) occurred below 10 g. Most (98.2%) HAE occurred during tackles (59.3% to tackler; 40.7% to ball carrier) and the initial collision stage of the tackle (43.9%). The initial collision stage resulted in significantly greater PAA and ΔPAV than secondary contact and play the ball tackle stages (p < 0.001). Indirect HAE accounted for 29.8% of HAE and resulted in significantly greater ΔPAV (p < 0.001) than direct HAE, but significantly lower PLA (p < 0.001). Almost all HAE were sustained in the tackle, with the majority occurring during the initial collision stage, making it an area of focus for the development of player protection strategies for both ball carriers and tacklers. League-wide and community-level implementation of iMG could enable a greater understanding of head acceleration exposure between playing positions, cohorts, and levels of play.

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Section: Introductionmentioning

confidence: 99%

Quantification of Head Acceleration Events in Rugby League: An Instrumented Mouthguard and Video Analysis Pilot Study

Tooby

Weaving

Al-Dawoud³

et al. 2022

Sensors

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“…In addition, the reliability of the number of repetitions performed between the two sessions was examined firstly using SEM's and their 95% CI's. Furthermore, repetitions between the two sessions were further examined using ICC's (3,1) , which were interpreted as per previously established guidelines < 0.5 = poor, 0.5-0.75 = moderate, 0.75-0.9 = good and > 0.90 = excellent [18]. To determine whether there were significant differences between the number of repetitions performed in each session repeated measures linear mixed models were used, with time (i.e.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…Rugby league is an intermittent collision sport, characterized by bouts of high intensity running and tackling [1]. Rugby league necessitates high aerobic and anaerobic fitness in addition to speed and muscular strength/power to compete at elite level [2].…”

Section: Introductionmentioning

confidence: 99%

The efficacy of repetitions-in-reserve vs. traditional percentage-based resistance training: a 4-week pre-season randomized intervention in elite rugby league players

2021

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Purpose This two-experiment study aimed to examine (1) the accuracy and reliability of repetitions-in-reserve and (2) using a randomized trial, the efficacy of repetition-in-reserve compared to traditional percentage-based training during a 4-week pre-season strength training block in elite rugby league players. Methods In experiment 1, participants performed deadlift, bench press and weighted pull up exercises for 3, 6, and 9 repetitions to failure using self-selected loads. This was undertaken on two occasions, separated by 8-weeks. In experiment 2, participants were randomly separated into either repetitions-in-reserve or percentage-based training groups. They completed a 4-week pre-season training block with training prescribed based on the group to which they were assigned. Measures of body mass and 3 repetition max strength in the aforementioned exercises were measured pre and post intervention. Results Experiment 1 showed that repetitions-in-reserve exhibited generally acceptable levels of accuracy and moderate-good levels of reliability. However, the deadlift when the required number of repetitions was 6 and 9 and the bench press when number of repetitions was 9 were not associated with acceptable levels of accuracy and reliability, respectively. Experiment 2 showed that there were no differences between repetitions-in-reserve or percentage-based training group for the strength outcomes, although there were significant increases in body mass in the percentage-based group (pre = 85.6 ± 10.6 kg, post = 86.4 ± 10.8 kg). Conclusion Repetitions-in-reserve is generally associated with acceptable levels of accuracy and moderate-good levels of reliability, although there were some exceptions for the deadlift in relation to accuracy and bench press for reliability. Experiment 2 shows that although there were no differences between groups for the strength-based outcomes, significant increases in body mass in the percentage-based group may make this approach a more effective approach to prepare players for the rigors of the rugby league season.

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“…Rugby league football is an athletic discipline representative of an intermittent contact teambased sport, typified by bouts of maximum velocity running (both with and in the absence of possession of the ball), rapid changes of direction, physical collisions, and tackling, with interceding periods of diminished activity (Naughton et al, 2020). Owing to the unique nature of the sport, rugby league therefore necessitates aptitude across several components of sporting/ athletic and anthropometric competence, including increased muscle mass, low body fat, high aerobic and anaerobic fitness as well as high muscular strength, power, speed and agility (Gabbett, King & Jenkins, 2008).…”

Section: Introductionmentioning

confidence: 99%

The effects of wide vs. self-selected squat stance width on performance indices in elite rugby league players; an 8-week pre-season randomized controlled intervention

Sinclair,

James Edmundson,

Taylor

et al. 2024

Mov Sport Sci/Sci Mot

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This study examined the efficacy of wide compared to self-selected stance width squats in terms of mediating performance improvements during an 8-week period of pre-season training in elite rugby league players. Participants (N = 26) were randomly separated into either wide (N = 13) (i.e. self-selected squat stance width increased by 20%) or self-selected (N = 13) squat stance width training groups, and they completed an 8-week pre-season training block. Measures of 505-agility test time (primary outcome), 3 repetition maximum (3RM) squat strength in participants self-selected stance position and counter movement jump height were measured at baseline and 8-weeks. There were no significant differences between training groups in terms of the improvements made during the intervention period for 505-agility test (wide: pre = 2.47 ± 0.08 & post = 2.34 ± 0.11’s and self-selected: pre = 2.46 ± 0.05 & post = 2.35 ± 0.08’s), counter movement jump (wide: pre = 42.68 ± 9.57 & post = 44.65 ± 9.04 cm, and self-selected: pre = 49.33 ± 6.70 & post = 50.33 ± 4.67 cm) or 3RM squat strength (wide: pre = 159.00 ± 15.24 & post = 178.00 ± 19.32 kg and self-selected: pre = 168.33 ± 11.73 & post = 185.56 ± 16.48kg). As such the findings from the current randomized controlled trial suggest that there is not sufficient evidence to suggest that wide stance width squats represent a more efficacious method of resistance training prescription in elite rugby league.

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Correction to: Quantifying the Collision Dose in Rugby League: A Systematic Review, Meta-analysis, and Critical Analysis

Abstract: An amendment to this paper has been published and can be accessed via the original article.

Cited by 11 publications

References 63 publications

Quantification of Head Acceleration Events in Rugby League: An Instrumented Mouthguard and Video Analysis Pilot Study

Quantification of Head Acceleration Events in Rugby League: An Instrumented Mouthguard and Video Analysis Pilot Study

The efficacy of repetitions-in-reserve vs. traditional percentage-based resistance training: a 4-week pre-season randomized intervention in elite rugby league players

The effects of wide vs. self-selected squat stance width on performance indices in elite rugby league players; an 8-week pre-season randomized controlled intervention

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