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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. doi: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

The validity of external:internal training load ratios in rested and fatigued soccer players (2018)
Journal Article
Akubat, I., Barrett, S., Sagarra, M. L., & Abt, G. (2018). The validity of external:internal training load ratios in rested and fatigued soccer players. Sports open access journal, 6(2), (44). doi:10.3390/sports6020044. ISSN 2075-4663

Purpose: To examine the relationship of external:internal training load ratios with fitness and assess the impact of fatigue. Method: Ten soccer players performed a lactate threshold test followed by two soccer simulations (BEAST90mod) 48 h apart. Re... Read More

Measuring Moderate-Intensity Exercise with the Apple Watch: Validation Study (2018)
Journal Article
Abt, G., Bray, J., & Benson, A. C. (in press). Measuring Moderate-Intensity Exercise with the Apple Watch: Validation Study. JMIR Cardio, 2(1), (e6). doi:10.2196/cardio.8574. ISSN 2561-1011

Background: Moderate fitness levels and habitual exercise have a protective effect for cardiovascular disease, stroke, type 2 diabetes, and all-cause mortality. The Apple Watch displays exercise completed at an intensity of a brisk walk or above usin... Read More

The validity and inter-device variability of the Apple Watch™ for measuring maximal heart rate (2017)
Journal Article
Abt, G., Bray, J., & Benson, A. C. (2018). The validity and inter-device variability of the Apple Watch™ for measuring maximal heart rate. Journal of sports sciences, 36(13), 1447-1452. doi:10.1080/02640414.2017.1397282

Maximal heart rate (HRmax) is a fundamental measure used in exercise prescription. The Apple Watch measures heart rate yet the validity and inter-device variability of the device for measuring HRmax are unknown. Fifteen participants completed a maxim... Read More

Multiple measures are needed to quantify training loads in professional rugby league (2017)
Journal Article
Weaving, D., Jones, B., Marshall, P., Till, K., & Abt, G. (2017). Multiple measures are needed to quantify training loads in professional rugby league. International journal of sports medicine, 38(10), (735-740). doi:10.1055/s-0043-114007. ISSN 0172-4622

To investigate the effect of training mode (conditioning and skills) on multivariate training load relationships in professional rugby league via principal component analysis. Four measures of training load (internal: heart rate exertion index, sessi... Read More

Validity and reliability of the Apple Watch for measuring heart rate during exercise (2017)
Journal Article
Khushhal, A., Nichols, S., Evans, W., Gleadall-Siddall, D., Page, R., O'Doherty, A. F., …Abt, G. (2017). Validity and reliability of the Apple Watch for measuring heart rate during exercise. SMIO / Sports Medicine International Open, 1(6), (E206-E211). doi:10.1055/s-0043-120195. ISSN 2367-1890

We examined the validity and reliability of the Apple Watch heart rate sensor during and in recovery from exercise. Twenty-one males completed treadmill exercise while wearing two Apple Watches (left and right wrists) and a Polar S810i monitor (crite... Read More

Using microtechnology to evaluate the between and within match variability of professional Twenty20 cricket fast bowlers (2016)
Journal Article
Abt, G., Bray, J., & Fogarty, M. (2016). Using microtechnology to evaluate the between and within match variability of professional Twenty20 cricket fast bowlers. Professional strength and conditioning, 43(December), 19-26

This study assessed the between- and within-match variability of external training load measures during two consecutive Twenty20 cricket seasons in professional fast bowlers. Global positioning system (GPS) and accelerometer data (PlayerLoad™) were c... 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. doi: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

Effectiveness of short-term heat acclimation on intermittent exercise in thermoneutral and hot environments (2015)
Journal Article
Nation, F., Birkett, M., Gleadall-Siddall, D., Burke, R., Towlson, C., Bray, J., …Garrett, A. (2015). Effectiveness of short-term heat acclimation on intermittent exercise in thermoneutral and hot environments. Extreme Physiology and Medicine, 4(1), A120. doi:10.1186/2046-7648-4-S1-A120

It is well-established that repetition of heat stress exposure has been shown to facilitate adaptations to the heat but these protocols have tended to be of a fixed work intensity, continuous exercise, long-term in duration (>7 days) and use hydratio... Read More

Combining internal- and external-training-load measures in professional rugby league (2014)
Journal Article
Abt, G., Earle, K., Marshall, P., Nevill, A., & Weaving, D. (2014). Combining internal- and external-training-load measures in professional rugby league. International journal of sports physiology and performance : IJSPP, 9(6), (905-912). doi:10.1123/ijspp.2013-0444. ISSN 1555-0265

Purpose: This study investigated the effect of training mode on the relationships between measures of training load in professional rugby league players. Methods: Five measures of training load (internal: individualized training impulse, session rati... Read More