2023 |
Delves RIM, Thornton HR, Hodges J, Cupples B, Ball K, Aughey R, Duthie GM, 'The introduction of the six-again rule has increased acceleration intensity across all positions in the National Rugby League competition.', Sci Med Footb, 7 47-56 (2023) [C1]
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Nova |
2023 |
Hopwood HJ, Bellinger PM, Compton HR, Bourne MN, Derave W, Lievens E, et al., 'Match Running Performance in Australian Football Is Related to Muscle Fiber Typology', International Journal of Sports Physiology and Performance, 18 1442-1448 (2023) [C1]
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Nova |
2023 |
McGuigan HE, Hassmen P, Rosic N, Thornton HR, Stevens CJ, 'Does education improve adherence to a training monitoring program in recreational athletes?', INTERNATIONAL JOURNAL OF SPORTS SCIENCE & COACHING, 18 101-113 (2023) [C1]
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2023 |
Naughton M, Weaving D, Scott T, Compton H, 'Synthetic Data as a Strategy to Resolve Data Privacy and Confidentiality Concerns in the Sport Sciences: Practical Examples and an R Shiny Application.', Int J Sports Physiol Perform, 18 1213-1218 (2023) [C1]
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Nova |
2023 |
Minahan C, Thornton HR, Bellinger P, Ward J, Lovell D, Buxton S, Newans T, 'Behind enemy lines: Expressing locomotor movements of athletes in the National Rugby League Women s (NRLW) competition relative to opposition data', Journal of Sports Sciences, 41 1762-1767 (2023) [C1]
We provide a novel analysis of the locomotor movements of athletes in the National Rugby League Women¿s (NRLW) competition by presenting the data of opposing teams expressed as a ... [more]
We provide a novel analysis of the locomotor movements of athletes in the National Rugby League Women¿s (NRLW) competition by presenting the data of opposing teams expressed as a relative (%) difference and explore the association with match outcome. 117 rugby league athletes from the four NRLW clubs participated in this study. Mean speed (m·min-1), mean high-speed running (>12 km·h-1; m·min-1), and mean acceleration (m·s-2) were measured in 12 matches (370 individual match files) using the Global Navigation Satellite System (GNSS). Individual GNSS-derived data from each match-half were summed across each team and the association with total points and the points differential in each match-half was determined using linear mixed models. Greater high-speed running and lower mean acceleration were associated with more points being scored. A greater relative difference in mean high-speed running between competing teams was associated with a higher points differential. That is, if a team completed 10% more high-speed running than their opposition, they were likely to score an average of 3.2 points more during a given match-half. This unique analysis of GNSS-derived data may assist coaches and performance support staff to interpret the locomotor movements of female rugby league players with the appropriate considerations for the opposition team.
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2023 |
Hopwood HJ, Bellinger PM, Compton HR, Bourne MN, Minahan C, 'The Relevance of Muscle Fiber Type to Physical Characteristics and Performance in Team-Sport Athletes', International Journal of Sports Physiology and Performance, 18 223-230 (2023) [C1]
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Nova |
2022 |
Duthie GM, Thomas EJ, Bahnisch J, Thornton HR, Ball K, 'Using Small-Sided Games in Field Hockey: Can They Be Used to Reach Match Intensity?', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 36 498-502 (2022) [C1]
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2022 |
Johnston RD, Thornton HR, Wade JA, Devlin P, Duthie GM, 'The Distribution of Match Activities Relative to the Maximal Mean Intensities in Professional Rugby League and Australian Football', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 36 1360-1366 (2022) [C1]
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2022 |
Thornton HR, Armstrong CR, Gamble T, Rigby A, Johnston RD, Duthie GM, 'Quantifying the Movement Characteristics of Australian Football League Women's Competition', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 36 3415-3421 (2022) [C1]
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2021 |
Duthie GM, Robertson S, Thornton HR, 'A GNSS-based method to define athlete manoeuvrability in field-based team sports', PLOS ONE, 16 (2021) [C1]
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2021 |
Fowler PM, Knez W, Thornton HR, Sargent C, Mendham AE, Crowcroft S, et al., 'Sleep Hygiene and Light Exposure Can Improve Performance Following Long-Haul Air Travel', International journal of sports physiology and performance, 16 517-526 (2021) [C1]
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2020 |
Duthie GM, Thornton HR, Delaney JA, McMahon JT, Benton DT, 'RELATIONSHIP BETWEEN PHYSICAL PERFORMANCE TESTING RESULTS AND PEAK RUNNING INTENSITY DURING PROFESSIONAL RUGBY LEAGUE MATCH PLAY', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 34 3506-3513 (2020) [C1]
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2020 |
O'Connor F, Thornton HR, Ritchie D, Anderson J, Bull L, Rigby A, et al., 'Greater association of relative thresholds than absolute thresholds with noncontact lower-body injury in professional australian rules footballers: Implications for sprint monitoring', International Journal of Sports Physiology and Performance, 15 204-212 (2020) [C1]
Sprint capacity is an important attribute for team-sport athletes, yet themost appropriate method to analyze it is unclear. Purpose: To examine the relationship between sprint wor... [more]
Sprint capacity is an important attribute for team-sport athletes, yet themost appropriate method to analyze it is unclear. Purpose: To examine the relationship between sprint workloads using relative versus absolute thresholds and lower-body soft-tissue and bone-stress injury incidence in professional Australian rules football. Methods: Fifty-three professional Australian rules football athletes' noncontact soft-tissue and bone-stress lower-body injuries (N = 62) were recorded, and sprint workloads were quantified over ~18 months using the global positioning system. Sprint volume (m) and exposures (n) were determined using 2 methods: Absolute (>24.9 km h-1) and relative (=75%,=80%,=85%,=90%,=95% of maximal velocity). Relationships between threshold methods and injury incidence were assessed using logistic generalized additive models. Incidence rate ratios and model performances' area under the curve were reported. Results: Mean (SD) maximal velocity for the group was 31.5 (1.4), range 28.6 to 34.9 km h-1. In comparing relative and absolute thresholds, 75% maximal velocity equated to ~1.5 km h-1 below the absolute speed threshold, while 80% and 85% maximal velocity were 0.1 and 1.7 km h-1 above the absolute speed threshold, respectively. Model area under the curve ranged from 0.48 to 0.61. Very low and very high cumulative sprint loads=80% across a 4-week period, when measured relatively, resulted in higher incidence rate ratios (2.54-3.29), than absolute thresholds (1.18-1.58). Discussion: Monitoring sprinting volume relative to an athlete'smaximal velocity should be incorporated into athlete monitoring systems. Specifically, quantifying the distance covered at >80% maximal velocity will ensure greater accuracy in determining sprint workloads and associated injury risk.
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2020 |
Thornton HR, Armstrong CR, Rigby A, Minahan CL, Johnston RD, Duthie GM, 'Preparing for an Australian Football League Women's League Season.', Frontiers in sports and active living, 2 608939 (2020) [C1]
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2019 |
Thornton HR, Delaney JA, Duthie GM, Dascombe BJ, 'Developing athlete monitoring systems in team sports: Data analysis and visualization', International Journal of Sports Physiology and Performance, 14 698-705 (2019) [C1]
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Nova |
2019 |
Thornton HR, Nelson AR, Delaney JA, Serpiello FR, Duthie GM, 'Interunit Reliability and Effect of Data-Processing Methods of Global Positioning Systems', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 14 432-438 (2019) [C1]
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2019 |
Taylor L, Stevens CJ, Thornton HR, Poulos N, Chrismas BCR, 'Limiting the Rise in Core Temperature During a Rugby Sevens Warm-Up With an Ice Vest', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 14 1212-1218 (2019) [C1]
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2019 |
Taylor L, Thornton HR, Lumley N, Stevens CJ, 'Alterations in core temperature during World Rugby Sevens Series tournaments in temperate and warm environments', EUROPEAN JOURNAL OF SPORT SCIENCE, 19 432-441 (2019) [C1]
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2019 |
Taylor L, Stevens CJ, Thornton HR, Poulos N, Chrismas BCR, 'An Ice Vest Limits the Rise in Core Temperature During a Rugby Sevens Warm-up', MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 51 136-136 (2019)
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2019 |
Bartlett JD, Hatfield M, Parker BB, Roberts LA, Minahan C, Morton JP, Thornton HR, 'DXA-derived estimates of energy balance and its relationship with changes in body composition across a season in team sport athletes', EUROPEAN JOURNAL OF SPORT SCIENCE, 20 859-867 (2019) [C1]
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2019 |
Thornton H, Delaney J, Bartlett J, Duthie G, 'No meaningful difference between absolute and relative speed thresholds when converted to a standard-ten score within a load monitoring system', Sports Performance and Science Reports, (2019) |
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2019 |
Delaney J, McKay B, Thornton H, Murray A, Duthie G, Thornton H, 'Training efficiency and athlete wellness in collegiate female soccer', Sports Performance and Science Reports, 1 1-3 (2019) |
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2019 |
Delaney JA, Wileman TM, Perry NJ, Thornton HR, Moresi MP, Duthie GM, 'The validity of a global navigation satellite system for quantifying small-area team-sport movements', Journal of Strength and Conditioning Research, 33 1463-1466 (2019)
The recent development of global navigation satellite systems (GNSS) has improved the availability and signal strength of surrounding satellites compared with traditional global p... [more]
The recent development of global navigation satellite systems (GNSS) has improved the availability and signal strength of surrounding satellites compared with traditional global positioning systems, although their ability to quantify rapid changes in speed may still be limited. This study aimed to evaluate the validity of GNSS to quantify the mean speed (m·s21) and acceleration (m·s22) of movements typical to team sports. One participant completed 9 periods of 4 minutes of activity, separated by 2-minute rest periods, which involved walking, jogging, and running in a variety of directions and patterns, aimed to simulate a team-sport movement profile. Speed and acceleration were quantified from a 10-Hz GNSS unit and compared with a 10-camera, 3-dimensional motion capture system (VICON), from which the movement of both the participant's center of mass (COM) and the location of the GNSS unit (e.g., C7 vertebrae) were calculated. Practical estimates of speed were associated with small differences from both the criterion COM (effect size; 690% confidence limits 5 0.19-0.25; 6;0.21) and criterion C7 (0.14-0.22; 6;0.13). The corresponding estimates of acceleration derived from raw data were classified as small (0.16-0.22; 6;0.15) and small to moderate (0.25-0.35; 6;0.24) for the COM and C7, respectively. Software-exported acceleration values exhibited very large mean bias compared with both criterion measures (23.81 to 23.77; 6;0.24). This study demonstrates that 10-Hz GNSS possess acceptable validity for assessing the average demands of movements typical of team-sports training and competition, although caution is recommended when using software-exported measures of acceleration.
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2019 |
Chrismas BCR, Taylor L, Thornton HR, Murray A, Stark G, 'External training loads and smartphone-derived heart rate variability indicate readiness to train in elite soccer', INTERNATIONAL JOURNAL OF PERFORMANCE ANALYSIS IN SPORT, 19 143-152 (2019) [C1]
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2019 |
Thornton H, Smith M, Armstrong P, Delany J, Duthie G, Cunneen H, Borges N, 'Is implementing age and positional specific training drills necessary in elite youth rugby league?', Sports Performance and Science Reports, (2019)
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Nova |
2018 |
Delaney JA, Thornton HR, Rowell AE, Dascombe BJ, Aughey RJ, Duthie GM, 'Modelling the decrement in running intensity within professional soccer players', SCIENCE AND MEDICINE IN FOOTBALL, 2 86-92 (2018)
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2018 |
Duthie GM, Thornton HR, Delaney JA, Connolly DR, Serpiello FR, 'RUNNING INTENSITIES IN ELITE YOUTH SOCCER BY AGE AND POSITION', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 32 2918-2924 (2018) [C1]
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2018 |
Scott TJ, Thornton HR, Scott MTU, Dascombe BJ, Duthie GM, 'Differences between relative and absolute speed and metabolic thresholds in rugby league', International Journal of Sports Physiology and Performance, 13 298-304 (2018) [C1]
Purpose: To compare relative and absolute speed and metabolic thresholds for quantifying match output in elite rugby league. Methods: Twenty-six professional players competing in ... [more]
Purpose: To compare relative and absolute speed and metabolic thresholds for quantifying match output in elite rugby league. Methods: Twenty-six professional players competing in the National Rugby League were monitored with global positioning systems (GPS) across a rugby-league season. Absolute speed (moderate-intensity running [MIRTh > 3.6 m/s] and high-intensity running [HIRTh > 5.2 m/s]) and metabolic (>20 W/kg) thresholds were compared with individualized ventilatory (first [VT1IFT] and second [VT2IFT]) thresholds estimated from the 30-15 Intermittent Fitness Test (30-15IFT), as well as the metabolic threshold associated with VT2IFT (HPmetVT2), to examine difference in match-play demands. Results: VT2IFT mean values represent 146%, 138%, 167%, and 144% increases in the HIR dose across adjustables, edge forwards, middle forwards, and outside backs, respectively. Distance covered above VT2IFT was almost certainly greater (ES range = 0.79-1.03) than absolute thresholds across all positions. Trivial to small differences were observed between VT1IFT and MIRTh, while small to moderate differences were reported between HPmetVT2 and HPmetTh. Conclusions: These results reveal that the speed at which players begin to run at higher intensities depends on individual capacities and attributes. As such, using absolute HIR speed thresholds underestimates the physical HIR load. Moreover, absolute MIR and high metabolic thresholds may over- or underestimate the work undertaken above these thresholds depending on the respective fitness of the individual. Therefore, using relative thresholds enables better prescription and monitoring of external training loads based on measured individual physical capacities.
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2018 |
Stevens CJ, Thornton HR, Fowler PM, Esh C, Taylor L, 'Long-Haul Northeast Travel Disrupts Sleep and Induces Perceived Fatigue in Endurance Athletes', FRONTIERS IN PHYSIOLOGY, 9 (2018) [C1]
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2018 |
Taylor L, Thornton H, Lumley N, Stevens C, 'Game-to-Game Increases in Core TemperatureDuring Rugby 7 s World Series Tournaments', Medicine & Science in Sports & Exercise, 50 339-339 (2018)
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2018 |
Thornton HR, Miller J, Taylor L, Sargent C, Lastella M, Fowler PM, 'Impact of short- compared to long-haul international travel on the sleep and wellbeing of national wheelchair basketball athletes', JOURNAL OF SPORTS SCIENCES, 36 1476-1484 (2018) [C1]
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2018 |
Caia J, Thornton HR, Kelly VG, Scott TJ, Halson SL, Cupples B, Driller MW, 'Does self-perceived sleep reflect sleep estimated via activity monitors in professional rugby league athletes?', JOURNAL OF SPORTS SCIENCES, 36 1492-1496 (2018) [C1]
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2018 |
Delaney JA, Cummins CJ, Thornton HR, Duthie GM, 'IMPORTANCE, RELIABILITY, AND USEFULNESS OF ACCELERATION MEASURES IN TEAM SPORTS', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 32 3485-3493 (2018) [C1]
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2018 |
Juhari F, Ritchie D, O'Connor F, Pitchford N, Weston M, Thornton HR, Bartlett JD, 'The Quantification of Within-Week Session Intensity, Duration, and Intensity Distribution Across a Season in Australian Football Using the Session Rating of Perceived Exertion Method', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 13 940-946 (2018) [C1]
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2018 |
Delaney JA, Duthie GM, Thornton HR, Pyne DB, 'Quantifying the relationship between internal and external work in team sports: development of a novel training efficiency index', SCIENCE AND MEDICINE IN FOOTBALL, 2 149-156 (2018) [C1]
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2018 |
Thornton HR, Delaney JA, Duthie GM, Dascombe BJ, 'Effects of Preseason Training on the Sleep Characteristics of Professional Rugby League Players.', International Journal of Sports Physiology and Performance, 13 176-182 (2018)
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2017 |
Fowler PM, Miller J, Sargent C, Lastella M, Thornton H, Taylor L, 'Long Compared To Short Haul Travel Effects On Wheelchair Basketball Player'S Preparation For The World Championships', MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 49 317-317 (2017)
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2017 |
Thornton HR, Delaney JA, Duthie GM, Dascombe BJ, 'Importance of Various Training-Load Measures in Injury Incidence of Professional Rugby League Athletes', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 12 819-824 (2017)
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2017 |
Delaney JA, Thornton HR, Burgess DJ, Dascombe BJ, Duthie GM, 'Duration-specific running intensities of Australian Football match-play', JOURNAL OF SCIENCE AND MEDICINE IN SPORT, 20 689-694 (2017)
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2017 |
Thornton HR, Duthie GM, Pitchford NW, Delaney JA, Benton DT, Dascombe BJ, 'Effects of a 2-Week High-Intensity Training Camp on Sleep Activity of Professional Rugby League Athletes', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 12 928-933 (2017)
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2017 |
Delaney JA, Thornton HR, Pryor JF, Stewart AM, Dascombe BJ, Duthie GM, 'Peak Running Intensity of International Rugby: Implications for Training Prescription', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 12 1039-1045 (2017)
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2016 |
Delaney JA, Duthie GM, Thornton HR, Scott TJ, Gay D, Dascombe BJ, 'Acceleration-Based Running Intensities of Professional Rugby League Match Play', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 11 802-809 (2016) [C1]
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Nova |
2016 |
Thornton HR, Delaney JA, Duthie GM, Scott BR, Chivers WJ, Sanctuary CE, Dascombe BJ, 'Predicting Self-Reported Illness for Professional Team-Sport Athletes.', International Journal of Sports Physiology and Performance, 11 543-550 (2016) [C1]
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Nova |
2016 |
Scott BR, Duthie GM, Thornton HR, Dascombe BJ, 'Training Monitoring for Resistance Exercise: Theory and Applications', Sports Medicine, 46 687-698 (2016) [C1]
Resistance exercise is difficult to quantify owing to its inherent complexity with numerous training variables contributing to the training dose (type of exercise, load lifted, tr... [more]
Resistance exercise is difficult to quantify owing to its inherent complexity with numerous training variables contributing to the training dose (type of exercise, load lifted, training volume, inter-set rest periods, and repetition velocity). In addition, the intensity of resistance training is often inadequately determined as the relative load lifted (% 1-repetition maximum), which does not account for the effects of inter-set recovery periods, repetition velocity, or the number of repetitions performed in each set at a given load. Methods to calculate the volume load associated with resistance training, as well as the perceived intensity of individual sets and entire training sessions have been shown to provide useful information regarding the actual training stimulus. In addition, questionnaires to subjectively assess how athletes are coping with the stressors of training and portable technologies to quantify performance variables such as concentric velocity may also be valuable. However, while several methods have been proposed to quantify resistance training, there is not yet a consensus regarding how these methods can be best implemented and integrated to complement each other. Therefore, the purpose of this review is to provide practical information for strength coaches to highlight effective methods to assess resistance training, and how they can be integrated into a comprehensive monitoring program.
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Nova |
2016 |
Delaney JA, Thornton HR, Duthie GM, Dascombe BJ, 'Factors That Influence Running Intensity in Interchange Players in Professional Rugby League', INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE, 11 1047-1052 (2016) [C1]
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2016 |
Delaney JA, Thornton HR, Scott TJ, Ballard DA, Duthie GM, Wood LG, Dascombe BJ, 'Validity of skinfold-based measures for tracking changes in body composition in professional rugby league players', International Journal of Sports Physiology and Performance, 11 261-266 (2016) [C1]
High levels of lean mass are important in collision-based sports for the development of strength and power, which may also assist during contact situations. While skinfold-based m... [more]
High levels of lean mass are important in collision-based sports for the development of strength and power, which may also assist during contact situations. While skinfold-based measures have been shown to be appropriate for cross-sectional assessments of body composition, their utility in tracking changes in lean mass is less clear. Purpose: To determine the most effective method of quantifying changes in lean mass in rugby league athletes. Methods: Body composition of 21 professional rugby league players was assessed on 2 or 3 occasions separated by = 6 wk, including bioelectrical impedance analysis (BIA), leanmass index (LMI), and a skinfold-based prediction equation (SkF). Dual-X-ray absorptiometry provided a criterion measure of fat-free mass (FFM). Correlation coefficients (r) and standard errors of the estimate (SEE) were used as measures of validity for the estimates. Results: All 3 practical estimates exhibited strong validity for cross-sectional assessments of FFM (r > .9, P < .001). The correlation between change scores was stronger for the LMI (r = .69, SEE 1.3 kg) and the SkF method (r = .66, SEE = 1.4 kg) than for BIA (r = .50, SEE = 1.6 kg). Conclusions: The LMI is probably as accurate in predicting changes in FFM as SkF and very likely to be more appropriate than BIA. The LMI offers an adequate, practical alternative for assessing in FFM among rugby league athletes.
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Nova |
2015 |
Delaney JA, Scott TJ, Thornton HR, Bennett KJ, Gay D, Duthie GM, Dascombe BJ, 'Establishing Duration-Specific Running Intensities From Match-Play Analysis in Rugby League.', Int J Sports Physiol Perform, 10 725-731 (2015) [C1]
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Nova |