Reproducibility of power production during sprint arm ergometry

Paul M. Smith, Michael J. Price, R.C. Richard Davison, Diane Scott, James Balmer

Research output: Contribution to journalArticle

Abstract

Sprint tests are frequently used to evaluate between-subject differences and can provide a valuable insight into performance capacity. The present study determined the reproducibility of peak and mean power output during upper-body sprints. After familiarization 25 men (mean [+/- SD] age 29 [6] years, body mass 82.8 [12.7] kg and height 1.76 [0.05] m) completed 2 20-second upper-body sprint tests using an adapted cycle ergometer. Mean (+/- SD) values of all power (uncorrected and corrected) measurements achieved during the 2 tests were checked for systematic bias using separate paired t-tests. Test-retest reproducibility was examined using coefficients of variation and single-measure intraclass correlation coefficients, as well as an assessment of the typical (random) error and the 95% limits of agreement. The value of corrected peak power (628 [167] W) was higher (p < 0.05) compared with the uncorrected value (509 [109] W). Values of corrected (465 [95] W) and uncorrected (444 [87] W) mean power were similar (p > 0.05). The mean bias value for all power parameters equated to less than +/-1% of the absolute values of power measured. Intraclass correlation coefficients for all data sets ranged from 0.97 to 0.98. Coefficients of variation for uncorrected and corrected values of peak power were 2.8 and 4.5%, while corresponding values for mean power were 2.9 and 3.2%, respectively. The reproducibility of all power indices was below 5%. The results of this study indicate that both uncorrected and corrected measurements of peak power output and mean power output can be used to assess performance during sprint arm ergometry.

Original languageEnglish
Pages (from-to)1315-1319
Number of pages5
JournalJournal of Strength and Conditioning Research
Volume21
Issue number4
Publication statusPublished - Nov 2007
Externally publishedYes

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Keywords

  • Adult
  • Exercise Test
  • Humans
  • Male
  • Muscle Strength
  • Reproducibility of Results
  • Task Performance and Analysis
  • Journal Article
  • Validation Studies

Cite this

Smith, Paul M. ; Price, Michael J. ; Davison, R.C. Richard ; Scott, Diane ; Balmer, James. / Reproducibility of power production during sprint arm ergometry. In: Journal of Strength and Conditioning Research. 2007 ; Vol. 21, No. 4. pp. 1315-1319.
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Smith, PM, Price, MJ, Davison, RCR, Scott, D & Balmer, J 2007, 'Reproducibility of power production during sprint arm ergometry' Journal of Strength and Conditioning Research, vol. 21, no. 4, pp. 1315-1319.

Reproducibility of power production during sprint arm ergometry. / Smith, Paul M.; Price, Michael J.; Davison, R.C. Richard; Scott, Diane; Balmer, James.

In: Journal of Strength and Conditioning Research, Vol. 21, No. 4, 11.2007, p. 1315-1319.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Reproducibility of power production during sprint arm ergometry

AU - Smith, Paul M.

AU - Price, Michael J.

AU - Davison, R.C. Richard

AU - Scott, Diane

AU - Balmer, James

PY - 2007/11

Y1 - 2007/11

N2 - Sprint tests are frequently used to evaluate between-subject differences and can provide a valuable insight into performance capacity. The present study determined the reproducibility of peak and mean power output during upper-body sprints. After familiarization 25 men (mean [+/- SD] age 29 [6] years, body mass 82.8 [12.7] kg and height 1.76 [0.05] m) completed 2 20-second upper-body sprint tests using an adapted cycle ergometer. Mean (+/- SD) values of all power (uncorrected and corrected) measurements achieved during the 2 tests were checked for systematic bias using separate paired t-tests. Test-retest reproducibility was examined using coefficients of variation and single-measure intraclass correlation coefficients, as well as an assessment of the typical (random) error and the 95% limits of agreement. The value of corrected peak power (628 [167] W) was higher (p < 0.05) compared with the uncorrected value (509 [109] W). Values of corrected (465 [95] W) and uncorrected (444 [87] W) mean power were similar (p > 0.05). The mean bias value for all power parameters equated to less than +/-1% of the absolute values of power measured. Intraclass correlation coefficients for all data sets ranged from 0.97 to 0.98. Coefficients of variation for uncorrected and corrected values of peak power were 2.8 and 4.5%, while corresponding values for mean power were 2.9 and 3.2%, respectively. The reproducibility of all power indices was below 5%. The results of this study indicate that both uncorrected and corrected measurements of peak power output and mean power output can be used to assess performance during sprint arm ergometry.

AB - Sprint tests are frequently used to evaluate between-subject differences and can provide a valuable insight into performance capacity. The present study determined the reproducibility of peak and mean power output during upper-body sprints. After familiarization 25 men (mean [+/- SD] age 29 [6] years, body mass 82.8 [12.7] kg and height 1.76 [0.05] m) completed 2 20-second upper-body sprint tests using an adapted cycle ergometer. Mean (+/- SD) values of all power (uncorrected and corrected) measurements achieved during the 2 tests were checked for systematic bias using separate paired t-tests. Test-retest reproducibility was examined using coefficients of variation and single-measure intraclass correlation coefficients, as well as an assessment of the typical (random) error and the 95% limits of agreement. The value of corrected peak power (628 [167] W) was higher (p < 0.05) compared with the uncorrected value (509 [109] W). Values of corrected (465 [95] W) and uncorrected (444 [87] W) mean power were similar (p > 0.05). The mean bias value for all power parameters equated to less than +/-1% of the absolute values of power measured. Intraclass correlation coefficients for all data sets ranged from 0.97 to 0.98. Coefficients of variation for uncorrected and corrected values of peak power were 2.8 and 4.5%, while corresponding values for mean power were 2.9 and 3.2%, respectively. The reproducibility of all power indices was below 5%. The results of this study indicate that both uncorrected and corrected measurements of peak power output and mean power output can be used to assess performance during sprint arm ergometry.

KW - Adult

KW - Exercise Test

KW - Humans

KW - Male

KW - Muscle Strength

KW - Reproducibility of Results

KW - Task Performance and Analysis

KW - Journal Article

KW - Validation Studies

M3 - Article

VL - 21

SP - 1315

EP - 1319

JO - Journal of Strength and Conditioning Research

JF - Journal of Strength and Conditioning Research

SN - 1064-8011

IS - 4

ER -