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Insufficient exercise intensity for clinical benefit? Monitoring and quantification of a community-based Phase III cardiac rehabilitation programme: A United Kingdom perspective (2019)
Journal Article
Khushhal, A., Nichols, S., Carroll, S., Abt, G., & Ingle, L. (in press). Insufficient exercise intensity for clinical benefit? Monitoring and quantification of a community-based Phase III cardiac rehabilitation programme: A United Kingdom perspective. PloS one, 14(6), https://doi.org/10.1371/journal.pone.0217654

Abstract: Background: In recent years, criticism of the percentage range approach for individualised exercise prescription has intensified and we were concerned that sub-optimal exercise dose (especially intensity) may be in part responsible for the... Read More

Pilot study assessing the influence of skin type on the heart rate measurements obtained by photoplethysmography with the Apple Watch (2019)
Journal Article
Sañudo, B., De Hoyo, M., Muñoz-López, A., Perry, J., & Abt, G. (2019). Pilot study assessing the influence of skin type on the heart rate measurements obtained by photoplethysmography with the Apple Watch. Journal of Medical Systems, 43, https://doi.org/10.1007/s10916-019-1325-2

Photoplethysmographic imaging (PPG) is currently used to measure heart rate (HR) and the accuracy of PPG can be influenced by pigmentation of the skin; however, the effects of skin color-related artifacts on PPG during exercise remain unclear. This s... Read More

Mixed-methods pre-match cooling improves simulated soccer performance in the heat (2018)
Journal Article
Aldous, J. W. F., Chrismas, B. C. R., Akubat, I., Stringer, C. A., Abt, G., & Taylor, L. (2019). Mixed-methods pre-match cooling improves simulated soccer performance in the heat. European journal of sport science : the official journal of the European College of Sport Science, 19(2), 156-165. https://doi.org/10.1080/17461391.2018.1498542

This investigation examined the effects of three pre-match and half-time cooling manoeuvres on physical performance and associated physiological and perceptual responses in eight University soccer players during a non-motorised treadmill based indivi... Read More

Quantifying the external and internal loads of professional rugby league training modes : consideration for concurrent field-based training prescription (2017)
Journal Article
Weaving, D., Jones, B., Till, K., Marshall, P., Earle, K., & Abt, G. (2017). Quantifying the external and internal loads of professional rugby league training modes : consideration for concurrent field-based training prescription. Journal of strength and conditioning research, 1. https://doi.org/10.1519/JSC.0000000000002242

The intermittent movement, collision and skill components of professional rugby league match play require players to have a wide range of physical (e.g. repeated effort ability, speed) and technical qualities (e.g. passing, kicking, tackling ability)... Read More

Misuse of "power" and other mechanical terms in sport and exercise science research (2016)
Journal Article
Winter, E. M., Abt, G., Brookes, F. B. C., Challis, J. H., Fowler, N. E., Knudson, D. V., …Yeadon, M. R. (2016). Misuse of "power" and other mechanical terms in sport and exercise science research. Journal of strength and conditioning research, 30(1), 292-300. https://doi.org/10.1519/JSC.0000000000001101

© 2015 National Strength and Conditioning Association. Despite the Système International d'Unitès (SI) that was published in 1960, there continues to be widespread misuse of the terms and nomenclature of mechanics in descriptions of exercise performa... Read More

Individualisation of time-motion analysis : a method comparison and case report series (2014)
Journal Article
Hunter, F., Bray, J., Towlson, C., Smith, M., Barrett, S., Madden, J., …Lovell, R. (2015). Individualisation of time-motion analysis : a method comparison and case report series. International journal of sports medicine, 36(1), 41-48. https://doi.org/10.1055/s-0034-1384547

© Georg Thieme Verlag KG. This study compared the intensity distribution of time-motion analysis data, when speed zones were categorized by different methods. 12 U18 players undertook a routine battery of laboratory- and field-based assessments to de... Read More

Integrating the internal and external training loads in soccer (2014)
Journal Article
Akubat, I., Barrett, S., & Abt, G. (2014). Integrating the internal and external training loads in soccer. International journal of sports physiology and performance : IJSPP, 9(3), 457-462. https://doi.org/10.1123/ijspp.2012-0347

Purpose: This study aimed to assess the relationships of fitness in soccer players with a novel integration of internal and external training load (TL). Design: Ten amateur soccer players performed a lactate threshold (LT) test followed by a soc... Read More

The effects of a constant sprint-to-rest ratio and recovery mode on repeated sprint performance (2011)
Journal Article
Abt, G., Siegler, J. C., Akubat, I., & Castagna, C. (2011). The effects of a constant sprint-to-rest ratio and recovery mode on repeated sprint performance. Journal of strength and conditioning research, 25(6), 1695-1702. doi:10.1519/JSC.0b013e3181dbdc06

It is unclear if a constant sprint-to-rest ratio allows full performance recovery between repeated sprints over different distances. This is important for the development of sprint-training programs. Additionally, there is conflicting evidence on whe... Read More

Intermittent exercise alters the heart rate-blood lactate relationship used for calculating the training impulse (TRIMP) in team sport players (2011)
Journal Article
Akubat, I., & Abt, G. (2011). Intermittent exercise alters the heart rate-blood lactate relationship used for calculating the training impulse (TRIMP) in team sport players. Journal of science and medicine in sport / Sports Medicine Australia, 14(3), (249-253). doi:10.1016/j.jsams.2010.12.003. ISSN 1440-2440

Objectives: The training impulse (TRIMP) quantifies training dose by weighting heart rate according to the relationship between fractional elevation in heart rate (Delta HR) and blood lactate concentration (BLa). This study compared the physiological... Read More

The use of individualized speed and intensity thresholds for determining the distance run at high-intensity in professional soccer (2009)
Journal Article
Lovell, R., & Abt, G. (2009). The use of individualized speed and intensity thresholds for determining the distance run at high-intensity in professional soccer. Journal of sports sciences, 27(9), (893-898). doi:10.1080/02640410902998239. ISSN 0264-0414

As with other match analysis systems, ProZone® uses an absolute speed threshold to identify running speeds at "high-intensity". In this study, we examined the use of an individualized high-intensity speed threshold based on the speed at the second ve... Read More

Analysis of physical match performance in English Premier League soccer referees with particular reference to first half and player work rates (2007)
Journal Article
Weston, M., Castagna, C., Impellizzeri, F. M., Rampinini, E., & Abt, G. (2007). Analysis of physical match performance in English Premier League soccer referees with particular reference to first half and player work rates. Journal of science and medicine in sport / Sports Medicine Australia, 10(6), (390-397). doi:10.1016/j.jsams.2006.09.001. ISSN 1440-2440

The aim of the present study was to examine the influence of first half activity, overall match intensity and seasonal variation on the physical match performances of English Premier League football referees. Match analysis data was collected using t... Read More

Physiological aspects of soccer refereeing performance and training (2007)
Journal Article
Castagna, C., Abt, G., & D'Ottavio, S. (2007). Physiological aspects of soccer refereeing performance and training. Sports medicine, 37(7), 625-646. doi:10.2165/00007256-200737070-00006

The role of the referee is far from minimal in the economy of soccer, as very often, particularly in professional soccer, a wrong judgment may have profound implications on the outcome of the game. In this regard, a better knowledge of soccer referee... Read More