Cardiorespiratory and perceptual responses to self-regulated and imposed submaximal arm-leg ergometry

Hill, M., Talbot, C. and Puddiford, M. (2018) Cardiorespiratory and perceptual responses to self-regulated and imposed submaximal arm-leg ergometry. European Journal of Applied Physiology. 118(5), pp. 1011-1019. 1439-6327.

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Item Type:	Article
Abstract:	Purpose: This study compared cardiorespiratory and perceptual responses to exercise using self-regulated and imposed power outputs distributed between the arms and legs. Methods Ten males (age 21.7 ± 3.4 years) initially undertook incremental arm-crank ergometry (ACE) and cycle ergometry (CYC) tests to volitional exhaustion to determine peak power output (Wpeak). Two subsequent tests involved 20-min combined arm–leg ergometry (ALE) trials, using imposed and self-regulated protocols, both of which aimed to elicit an exercising heart rate of 160 beats min−1. During the imposed trial, arm and leg intensity were set at 40% of each ergometer-specific Wpeak. During the self-regulated trial, participants were asked to self-regulate cadence and resistance to achieve the target heart rate. Heart rate (HR), oxygen uptake (V˙O2 ), pulmonary ventilation (V˙E ), and ratings of perceived exertion (RPE) were recorded continuously. Results As expected, there were no differences between imposed and self-regulated trials for HR, V˙O2 , and V˙E (all P ≥ 0.05). However, central RPE and local RPE for the arms were lower during self-regulated compared imposed trials (P ≤ 0.05). Lower RPE during the self-regulated trial was related to preferential adjustments in how the arms (33 ± 5% Wpeak) and legs (46 ± 5% Wpeak) contributed to the exercise intensity. Conclusions: This study demonstrates that despite similar metabolic and cardiovascular strain elicited by imposed and self-regulated ALE, the latter was perceived to be less strenuous, which is related to participants doing more work with the legs and less work with the arms to achieve the target intensity.
Uncontrolled Keywords:	Combined arm–leg ergometer, arm-cranking, concurrent exercise, whole-body exercise, energy expenditure
Subjects:	Q Science > QP Physiology > QP301 Exercise and sports physiology
Creators:	Hill, Matthew, Talbot, Christopher and Puddiford, Michael
Publisher:	Springer Verlag
Faculties, Divisions and Institutes:	University Faculties, Divisions and Research Centres - OLD > Research Centre > Institute of Health and Wellbeing > Ageing Research Centre Research Centres > Centre for Health Sciences and Services Research Centres > Centre for Physical Activity and Life Sciences
Date:	6 March 2018
Date Type:	Published Online
Page Range:	pp. 1011-1019
Journal or Publication Title:	European Journal of Applied Physiology
Volume:	118
Number:	5
Language:	English
DOI:	https://doi.org/10.1007/s00421-018-3838-7
ISSN:	1439-6327
Status:	Published / Disseminated
Refereed:	Yes
URI:	http://nectar.northampton.ac.uk/id/eprint/10237

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