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The sensitivity of differential ratings of perceived exertion as measures of internal load

Lookup NU author(s): Dr Iain SpearsORCiD

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Abstract

©2016 Human Kinetics,Inc.Purpose: To investigate the sensitivity of differential ratings of perceived exertion (dRPE) as measures of internal load. Methods: Twenty-two male university soccer players performed 2 maximal incremental-exercise protocols (cycle, treadmill) on separate days. Maximal oxygen uptake (VO2max), maximal heart rate (HRmax), peak blood lactate concentration (B[La]peak), and the preprotocol-to-postprotocol change in countermovement-jump height (ΔCMJH) were measured for each protocol. Players provided dRPE (CR100) for breathlessness (RPE-B) and leg-muscle exertion (RPE-L) immediately on exercise termination (RPE-B0, RPE-L0 ) and 30 min postexercise (RPE-B30, RPE-L30). Data were analyzed using magnitude-based inferences. Results: There were clear between-protocols differences for VO2max (cycle 46.5 ±} 6.3 vs treadmill 51.0 ±} 5.1 mL kg-1 min-1, mean difference -9.2%; ±}90% confidence limits 3.7%), HRmax (184.7 ±} 12.7 vs 196.7 ±} 7.8 beats/min, -6.0%; ±}1.7%), B[La]peak (9.7 ±} 2.1 vs 8.5 ±} 2.0 mmol/L, 15%; ±}10%), and ΔCMJH (-7.1 ±} 4.2 vs 0.6 ±} 3.6 cm, -23.2%; ±}5.4%). Clear between-protocols differences were recorded for RPE-B0 (78.0 ±} 11.7 vs 94.7 ±} 9.5 AU, -18.1%; ±}4.5%), RPE-L0 (92.6 ±} 9.7 vs 81.3 ±} 14.1 AU, 15.3%; ±}7.6%), RPE-B30 (70 ±} 11 vs 82 ±} 13 AU, -13.8%; ±}7.3%), and RPE-L30 (86 ±} 12 vs 65 ±} 19 AU, 37%; ±}17%). A substantial timing effect was observed for dRPE, with moderate to large reductions in all scores 30 min postexercise compared with scores collected on exercise termination. Conclusion: dRPE enhance the precision of internal-load measurement and therefore represent a worthwhile addition to training-load-monitoring procedures.

Publication metadata

Author(s): Mclaren SJ, Graham M, Spears IR, Weston M

Publication type: Article

Publication status: Published

Journal: International Journal of Sports Physiology and Performance

Year: 2016

Volume: 11

Issue: 3

Pages: 404-406

Print publication date: 01/04/2016

Acceptance date: 01/01/1900

ISSN (print): 1555-0265

ISSN (electronic): 1555-0273

Publisher: Human Kinetics Publishers Inc.

URL: https://doi.org/10.1123/ijspp.2015-0223

DOI: 10.1123/ijspp.2015-0223

PubMed id: 26218099

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