Effect of exercise duration on session RPE at an individualized constant workload.
Session RPE (SRPE) permits subjective ratings of global effort following exercise. SRPE is useful for evaluating training load; however, mediating factors are not well understood. This study compared SRPE among treadmill trials at a clamped workload with a varied duration. Ten subjects (VO(2)max: 48.9 +/- 10.5 ml kg(-1) min(-1)) completed a maximal-exertion treadmill trial followed by treadmill trials of 20 (TM20), 30-(TM30), and 40-(TM40) min (counterbalanced) duration at approximately 70% individualized VO(2)max. Heart rate (HR) and acute RPE (during exercise) were recorded every 5 min with blood lactate concentration [La] recorded before initiating exercise and every 10 min throughout exercise to completion. Analyses showed no significant differences among TM20, TM30, and TM40 for mean HR, [La] or acute RPE which isolated effects of duration on SRPE. Session RPE (recorded 20 min post exercise) relative to overall (SRPEO), legs (SRPEL) and breathing (SRPEB) was analyzed using a 3 (trial) x 3 (SRPE: O, L, B) repeated measures ANOVA (alpha 0.05). There was no main effect for duration, but there was a significant main effect for SRPE type with SRPEO (4.40 +/- 2.18) greater than SRPEB (3.56 +/- 1.98) but no difference for SRPEL (4.43 +/- 2.16). Follow-up tests for within-trial differences showed no significant differences for SRPEL versus SRPEO, but blunted SRPEB estimations (vs. SRPEO and SRPEL). Primary results indicate affects of duration on SRPE are minimal. Further, within the limits of the current study, differentiating SRPE estimations do not appear advantageous; however, further work is warranted.
Green
J Matthew
JM
Department of Health, Physical Education and Recreation, University of North Alabama, UNA Box 5073, Florence, AL 35632-0001, USA. jmgreen@una.edu
McIntosh
Joyce R
JR
Hornsby
Jarred
J
Timme
Lauren
L
Gover
Lauren
L
Mayes
Jennifer L
JL
D000328:Adult; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D007206:Individuality; D008297:Male; D010465:Perception / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D012107:Research Design; D013997:Time Factors; D016526:Workload / Q000523:psychology; D055815:Young Adult
J Strength Cond Res. 2003 Nov;17(4):734-8
14636112
Med Sci Sports Exerc. 1981;13(3):150-63
7019620
Med Sci Sports Exerc. 2009 Mar;41(3):682-7
19204580
Scand J Med Sci Sports. 2006 Feb;16(1):49-56
16430681
Med Sci Sports Exerc. 2004 Oct;36(10):1776-80
15595300
Eur J Appl Physiol Occup Physiol. 1995;70(4):367-72
7649149
Med Sci Sports Exerc. 2007 Nov;39(11):2051-7
17986915
J Strength Cond Res. 2001 Feb;15(1):109-15
11708692
J Sports Med Phys Fitness. 2007 Mar;47(1):18-24
17369793
Med Sci Sports Exerc. 1998 Jul;30(7):1164-8
9662690
Med Sci Sports Exerc. 1982;14(5):397-405
7154896
Exerc Sport Sci Rev. 1997;25:407-52
9213100
J Sports Med Phys Fitness. 2007 Mar;47(1):33-9
17369795
Compr Ther. 1980 Sep;6(9):12-27
7471684