Single-leg Wingate Test in children: reliability and optimal braking force

Hebestreit, Helge; Dunstheimer, Desirée; Staschen, B.; Hm, Strassburg

doi:10.1097/00005768-199908000-00021

Cited by 15 publications

(16 citation statements)

References 11 publications

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“…Previous research assessing the 30 s Wingate protocol over repeated trials has demonstrated reliability coefficients of 0.89 ± 0.98 for peak and mean power measurements in trained [34] and untrained subjects [17]. However, Coggan and Costill [8] reported coefficient of variation values of 5.4 ± 6.7 % for these parameters and 10.3 % for the calculation of fatigue index during single 30-second trials.…”

Section: Introductionmentioning

confidence: 98%

“…In order to be confident in interpreting data from maximal sprint tests, the random variation of a subjects repeated measurement must be evaluated [31]. These data allow the exercise scientist to select appropriate tests for assessment [2], enabling small worthwhile changes in performance to be detected, and allow for the determination of subject numbers required for experimental intervention in the research laboratory [19].Previous research assessing the 30 s Wingate protocol over repeated trials has demonstrated reliability coefficients of 0.89 ± 0.98 for peak and mean power measurements in trained [34] and untrained subjects [17]. However, Coggan and Costill [8] reported coefficient of variation values of 5.4 ± 6.7 % for these parameters and 10.3 % for the calculation of fatigue index during single 30-second trials.…”

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confidence: 99%

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Reliability of Sprint Test Indices in Well-Trained Cyclists

Coleman

Wiles²,

Nunn³

et al. 2005

Int J Sports Med

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The study aim was to assess reliability of repeated laboratory sprint tests in well-trained endurance cyclists. Eleven male cyclists (mean +/- standard deviation: 27 +/- 6 yr, 1.79 +/- 0.04 m, 70.1 +/- 3.3 kg) performed a maximal 30-second sprint test on four separate occasions using their own bicycle fitted with an SRM powermeter on a Kingcycle air-braked ergometer. Peak power output (W (peak)), mean power (W (mean)) and an index of fatigue (FI) were calculated. Three minutes post sprint, capillarised blood lactate measurements were taken and analysed. No significant differences (p > 0.05) were found between trials for W (peak), W (mean), FI and blood lactate concentration. Repeatability of W (peak), W (mean), and fatigue index improved across trials 2 and 3 when compared to trials 1 and 2. The highest CV for these variables was recorded between trials 3 and 4. The CV for W (peak) was 4.5 +/- 1.6 %, W (mean) 2.4 +/- 1.2 %, and FI 17.2 +/- 7.1 %. Intraclass reliability coefficients were 0.93 (95 % CI 0.84 - 0.98), 0.94 (95 % CI 0.86 - 0.98) and 0.89 (95 % CI 0.69 - 0.95) respectively. Blood lactate concentration ranged between 5.35 and 14.52 mmol.l(-1), with a mean CV of 12.1 +/- 4.2 %. The CV for trials 2 and 3 revealed the highest CV for blood lactate concentration (15.1 %). The lowest CV for this variable (10.2 %) was recorded between trials 3 and 4. The intraclass reliability coefficient for blood lactate concentration was 0.79 (95 % CI 0.58 - 0.93). The results of this study indicate that there is no improvement in the reliability of sprint test indices when assessing well-trained, experienced cyclists, riding on their own cycle equipment.

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Section: Introductionmentioning

confidence: 98%

mentioning

confidence: 99%

Reliability of Sprint Test Indices in Well-Trained Cyclists

Coleman

Wiles²,

Nunn³

et al. 2005

Int J Sports Med

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“…Optimal braking force for the BLWAnT was determined from tables (Dotan and Bar-Or 1983;Evans and Quinney 1981). The selection of a braking force within a 10% margin around the optimal braking force only slightly aects performance (Hebestreit et al 1999). 4.…”

Section: Discussionmentioning

confidence: 99%

“…The exercise procedures are described in detail elsewhere (Hebestreit et al 1999). Brie¯y, seat position and crank arm length were adjusted according to each subject's body size.…”

Section: Protocolmentioning

confidence: 99%

“…A modi®cation of the BLWAnT for one leg (the unilateral Wingate anaerobic test, ULWAnT) has been developed. Like the BLWAnT, the ULWAnT is highly reliable and feasible (Hebestreit et al 1999). In both tests, the peak power reached in any 3-to 5-s period (PP) during the 30-s task and the total mechanical work performed throughout the 30-s period (TMW) are used to describe performance.…”

Section: Introductionmentioning

confidence: 99%

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Bilateral deficit during short-term, high-intensity cycle ergometry in girls and boys

Dunstheimer

Hebestreit

Staschen

et al. 2001

European Journal of Applied Physiology

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Peak torque during an isokinetic bilateral knee extension or flexion is usually lower than the summed peak torque of two unilateral contractions, and this phenomenon is designated as bilateral deficit (BD). The objectives of this study were to determine whether a BD also exists for more complex, alternating movements (e.g., short-term, high-intensity cycling), and to assess the possible effects of gender and maturity. Forty children and adolescents performed two unilateral (ULWAnT) and one bilateral Wingate anaerobic test (BLWAnT). The highest power reached in any 3-s interval (peak power; PP), and the total mechanical work (TMW) performed during the test was determined. Individual BD for PP (BDpp, %) was calculated by dividing the PP in the BLWAnT by the sum of the PP values of both ULWAnTs. The BD for TMW (BDTMw) was calculated in the same way. The sum of PP generated during the two ULWAnTs was larger than the PP measured in the BLWAnT (P<0.000001). The same difference was observed for TMW (P<0.0001). Maturity did not affect the BDpp or BDTMW (P=0.34). However, the BD was more pronounced in females compared to males (P= 0.03). In conclusion, a BD is evident during cycling exercise.

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Reliability of exercise testing and functional activity questionnaires in children with juvenile arthritis

Stephens¹,

Singh‐Grewal²,

Bar‐Or³

et al. 2007

Arthritis & Rheumatism

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Objective. To determine the reliability of formal exercise testing and the reliability of functional and activity questionnaires in children with juvenile idiopathic arthritis (JIA). Methods. Children with JIA of any subtype ages 8 -16 years who were recruited to a randomized trial comparing different exercise therapies participated in 2 preintervention sessions of exercise testing 2-6 weeks apart. Exercise testing included 1) submaximal oxygen uptake (VO 2submax ), 2) peak VO 2 (VO 2peak ), and 3) anaerobic power using modified Wingate tests ( W ant ). Two physical function questionnaires (the Childhood Health Assessment Questionnaire [C-HAQ] and Revised Activity Scale for Kids [ASK]) and 1 daily physical activity questionnaire (the Habitual Activity Estimation Scale [HAES])were also completed at these times. Test-retest reliability was assessed using type 3, intrarater intraclass correlation coefficient (ICC 3,1 ) and Bland and Altman plots were used to determine limits of agreement. Conclusion.Results of this investigation suggest that exercise testing and functional questionnaires in children with JIA are consistent and reliable. Reliability of the HAES total score was poor, but moderate when the very active hours subscale score was used.

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Single-leg Wingate Test in children: reliability and optimal braking force

Abstract: SLWAnT is a highly reliable method to measure single-leg power. The above equation provides good estimates of optimal braking force. The SLWAnT can, therefore, be used to monitor changes in single-leg power and to assess leg-dominance.

Cited by 15 publications

References 11 publications

Reliability of Sprint Test Indices in Well-Trained Cyclists

Reliability of Sprint Test Indices in Well-Trained Cyclists

Bilateral deficit during short-term, high-intensity cycle ergometry in girls and boys

Reliability of exercise testing and functional activity questionnaires in children with juvenile arthritis

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