title: One repetition maximum prediction models for children using the OMNI RPE Scale.
abstract: This investigation developed statistical models to estimate one repetition maximum (1 RM) muscular strength using submaximal ratings of perceived exertion (RPE) as predictor variables. Ten- to 14-year-old girls (n = 35) and boys (n = 35) performed two sets (10 repetitions) of biceps curl (BC) and knee extension (KE) exercise using weights approximating 30% and 50% 1 RM. RPE was assessed during the final repetition of each set using the children's OMNI Resistance Exercise Scale (0-10). Sex-specific statistical models predicted 1 RM using RPE derived from both sets of BC and KE exercises. For both girls and boys, RPE ranged from 3.7 to 6.6 for BC and 4.1 to 7.2 for KE. Group mean 1 RM was (a) girls: BC, 7.44 kg, KE, 13.25 kg and (b) boys: BC, 9.19 kg, KE, 16.24 kg. One repetition maximum prediction models for girls were significant (P < 0.01) for BC (r = 0.87) and KE (r = 0.89). One repetition maximum prediction models for boys were significant (P < 0.01) for BC (r = 0.89) and KE (r = 0.87). The RPE predictors were practical and accurate measures, making the 1 RM models potentially applicable when assessing large numbers of children in short time periods.
authors.affiliation: Center for Exercise and Health-Fitness Research, Department of Health and Physical Activity, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. rrobert@pitt.edu
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Robertson
authors.forename: Fredric L
authors.initials: FL
authors.lastname: Goss
authors.forename: Deborah J
authors.initials: DJ
authors.lastname: Aaron
authors.forename: Anjuli
authors.initials: A
authors.lastname: Gairola
authors.forename: Ruth A
authors.initials: RA
authors.lastname: Kowallis
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.forename: Colby R
authors.initials: CR
authors.lastname: Randall
authors.forename: Kate A
authors.initials: KA
authors.lastname: Tessmer
authors.forename: Tracy L
authors.initials: TL
authors.lastname: Schnorr
authors.forename: Anne E
authors.initials: AE
authors.lastname: Schroeder
authors.forename: Brian
authors.initials: B
authors.lastname: White
mesh_terms: D000293:Adolescent; D000886:Anthropometry; D002648:Child; D015331:Cohort Studies; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D035002:Lower Extremity; D008297:Male; D015233:Models, Statistical; D009119:Muscle Contraction; D053580:Muscle Strength / Q000502:physiology*; D010807:Physical Endurance; D005082:Physical Exertion / Q000502:physiology; D011237:Predictive Value of Tests; D011336:Probability; D012680:Sensitivity and Specificity; D034941:Upper Extremity; D014891:Weight Lifting