A novel scale to assess resistance-exercise effort
Deutscher übersetzter Titel: | Eine neue Skala zur Bewertung der Wirksamkeit eines Widerstandstrainings |
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Autor: | Hackett, Daniel A.; Johnson, Nathan A.; Halaki, Mark; Chow, Chin Moi |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 30 (2012), 13, S. 1405-1413, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2012.710757 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201402001052 |
Quelle: | BISp |
Abstract
In this study, we examined the validity of a novel subjective scale for assessing resistance-exercise effort. Seventeen male bodybuilders performed five sets of 10 repetitions at 70% of one-repetition maximum, for the bench press and squat. At the completion of each set, participants quantified their effort via the rating of perceived exertion (RPE) and novel estimatedrepetitions- to-failure scales, and continued repetitions to volitional exhaustion to determine actual-repetitions-to-failure. There were high correlations between estimated- and actual-repetitions-to-failure across sets for the bench press and squat (r ≥ 0.93; P < 0.05). During sets 3, 4, and 5, estimated-repetitions-to-failure predicted the number of repetitions to failure for the bench press and squat, as indicated by smaller effect sizes for differences (ES = 0.37–0.0). The estimated-repetitions-to- failure scale was reliable as indicated by high intraclass correlation coefficients (≥0.92) and narrow 95% limits of agreement (≤0.63 repetitions) for both the bench press and squat. Despite high correlations between RPE and actualrepetitions- to-failure (P < 0.05), RPE at volitional fatigue was less than maximal for both exercises. Our results suggest that the estimated-repetitions-to-failure scale is valid for predicting onset of muscular failure, and can be used for the assessment and prescription of resistance exercise. Verf.-Referat