Validity of 10-HZ GPS and Timing Gates for Assessing Maximum Velocity in Professional Rugby Union Players

Roe, Gregory; Darrall-Jones, Joshua David; Black, Christopher J; Shaw, William J.; Till, Kevin; Jones, Ben

doi:10.1123/ijspp.2016-0256

Cited by 80 publications

(96 citation statements)

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“…Therefore, all systems might detect performance changes following a training period. The relatively small between-subject SD compared to other studies assessing high or maximum velocities (Djaoui, Chamari, Owen, & Dellal, 2017;Roe et al, 2017) suggests a high homogeneity of the athletes in the current study. This in turn leads to a low SWC and a usefulness rating of "OK".…”

Section: Discussionmentioning

confidence: 51%

“…A high accuracy of single beam timing lights for assessing maximal running velocities during a 40-m sprint in elite rugby players was previously shown by Roe et al (2017). The exact timing light height was not reported, however.…”

Section: Discussionmentioning

confidence: 94%

“…Despite the development of progressive technologies such as dual beam or post-processing timing lights, the use of single beam systems is still widespread (Darrall-Jones, Jones, Roe, & Till, 2016;McFarland, Dawes, Elder, & Lockie, 2016;Roe et al, 2017;Sawczuk et al, 2017;Wong et al, 2017), possibly due to greater availability and lower costs (Haugen & Buchheit, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Consistently, several researches question the accuracy at short distances (e. g., 5 m, 10 m, 20 m), whereas longer distances (e. g., 30 m, 40 m) can be measured with sufficient precision (Altmann, 2015;Altmann, 2017;Haugen, Tønnessen, Svendsen, & Seiler, 2014). However, little is known about single beam systems' validity in capturing interval sprinting times and corresponding velocities, and these studies used differing approaches (Roe et al, 2017) and objectives (Bond, Willaert, & Noonan, 2017;Haugen et al, 2014). In particular, the effect of different timing light heights on measurement accuracy has not been investigated to date.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Accuracy of single beam timing lights for determining velocities in a flying 20-m sprint: Does timing light height matter?

Altmann

Spielmann

Engel

et al. 2018

jhse

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Background: The purpose of this study was to evaluate the accuracy of timing lights (TL) at different heights for measuring velocities during sprinting. Methods: Two sets of single beam TL were used to determine velocities reached in a flying 20-m sprint in 15 healthy and physically active male participants. In TL64, all TL were set up at a height of 64 cm, and in TL100, all TL were set up at 100 cm, respectively. Participants performed three valid trials. The recordings of high-speed video cameras were used as a reference. Results: ICC and Pearson's r values between both timing light heights and the reference system were almost perfect (0.969-0.991). Bland & Altman's LOA (95 %) indicated low systematic and unsystematic errors, with somewhat smaller LOA for TL100 (-0.013-0.121 m/s) than for TL64 (-0.060-0.120 m/s). Measures of betweentrial reliability of running velocities showed a high relative (ICC) and absolute (RMSE) reliability, with the reference system showing slightly better values in all reliability measures (ICC=0.935; RMSE<0.001 m/s) compared to TL64 and TL100 (ICC=0.894, 0.887; RMSE=0.107 m/s, 0.124 m/s, respectively). The usefulness, determined by comparing the typical error (TE) with the smallest worthwhile change (SWC), was considered as "OK" (TE ≈ SWC) for all three systems. Conclusions: Results suggest that TL at both heights (TL64 and TL100) can be considered as accurate, reliable, and useful in computing velocities during a flying 20-m sprint, and therefore can be recommended to both coaches and researchers.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Accuracy of single beam timing lights for determining velocities in a flying 20-m sprint: Does timing light height matter?

Altmann

Spielmann

Engel

et al. 2018

jhse

View full text Add to dashboard Cite

show abstract

“…The validity and reliability of 10 Hz Catapult units for assessing team sport movements have previously been reported (Varley et al 2012a;Johnston et al 2014). Optimeye S5 devices have shown a small typical error of the estimate (1.8%) compared to a radar gun for assessing maximal sprint speed (Roe et al 2017) although to the authors' knowledge there is no further data available for other speeds. The horizontal dilution of precision and satellites connected (mean ± standard deviation (SD)) from all data files in the study was 0.61 ± 0.11 and 14.2 ± 0.8, respectively.…”

Section: Methodsmentioning

confidence: 82%

Maximum running intensities during English academy rugby union match-play

Read

Till

Beasley

et al. 2018

Science and Medicine in Football

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To quantify and compare the maximum running intensities during rugby union match-play. Methods: Running intensity was quantified using micro-technology devices (S5 Optimeye, Catapult) from 202 players during 24 matches (472 observations). Instantaneous speed was used to calculate relative distance (m•min-1) using a 0.1 s rolling mean for different time durations (15 and 30 s and 1, 2, 2.5, 3, 4, 5, and 10 min). Data were analysed using a linear mixed-model and assessed with magnitude-based inferences and Cohen's d effect sizes (ES). Results: Running intensity for consecutive durations (e.g., 15 s vs. 30 s, 30 s vs. 1 min, etc.) decreased as time increased (ES = 0.48-2.80). Running intensity was lower in forwards than backs during all durations (-0.74 ±0.21 to-1.19 ±0.21). Running intensity for the second row and back row positions was greater than the front row players at all durations (-0.58 ±0.38 to-1.18 ±0.29). Running intensity for scrum-halves was greater (0.46 ±0.43 to 0.86 ±0.39) than inside and outside backs for all durations besides 15 and 30 s. Conclusions: Front rowers and scrum-halves were markedly different from other sub-positional groups and should be conditioned appropriately. Coaches working in academy rugby can use this information to appropriately overload the intensity of running, specific to time durations and positions.

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Wireless Timing System Using ESP-To-ESP Communication Protocol for Precision Timing in Sports

Othman,

Amri,

Azmi

et al. 2024

Lecture Notes in Bioengineering

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Validity of 10-HZ GPS and Timing Gates for Assessing Maximum Velocity in Professional Rugby Union Players

Cited by 80 publications

References 0 publications

Accuracy of single beam timing lights for determining velocities in a flying 20-m sprint: Does timing light height matter?

Accuracy of single beam timing lights for determining velocities in a flying 20-m sprint: Does timing light height matter?

Maximum running intensities during English academy rugby union match-play

Wireless Timing System Using ESP-To-ESP Communication Protocol for Precision Timing in Sports

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