Reliability of Fitness Measures in 3- to 5-Year-Old Children

2011 ◽  
Vol 23 (2) ◽  
pp. 250-260 ◽  
Author(s):  
Thanh Nguyen ◽  
Joyce Obeid ◽  
Brian W. Timmons
Keyword(s):  
Heart Rate ◽  
Preschool Children ◽  
Power Output ◽  
Coefficient Of Variation ◽  
Intraclass Correlation ◽  
Submaximal Exercise ◽  
Treadmill Test ◽  
Short Term ◽  
Fitness Tests ◽  
Fitness Measures

The purpose of this study was to determine the reliability of short-term power output, heart rate (HR) response during and after a treadmill test, and time to complete a 25-m dash in healthy preschool children. Thirty-two 3- to 5-year-old boys and girls completed two sessions approximately one week apart. Intraclass correlation coefficient (ICC) and coefficient of variation (CV) were calculated to evaluate reliability. Power output was found to be reliable with ICCs ranging from 0.83 to 0.93 and CVs from 8.1 to 9.7%. Time to complete the 25-m dash was highly reliable (ICC = 0.91, CV = 3.7%). Reliability for HR at submaximal exercise (ICC = 0.28, CV = 18.8%) and HR recovery (ICC = 0.42, CV = 14.0%) was not as strong. These findings should assist in determining appropriate fitness tests for preschoolers.

Reliability and Construct Validity of Yo-Yo Tests in Untrained and Soccer-Trained Schoolgirls Aged 9–16

2016 ◽  
Vol 28 (2) ◽  
pp. 321-330 ◽  
Author(s):  
Susana C. A. Póvoas ◽  
Carlo Castagna ◽  
José Manuel da Costa Soares ◽  
Pedro Silva ◽  
Manuel Coelho-e-Silva ◽  
...  
Keyword(s):  
Heart Rate ◽  
Construct Validity ◽  
Coefficient Of Variation ◽  
Intermittent Exercise ◽  
Intraclass Correlation ◽  
Soccer Players ◽  
Confidence Limits ◽  
Peak Heart Rate ◽  
Level 1 ◽  
Level 2

Purpose:The reliability and construct validity of three age-adapted-intensity Yo-Yo tests were evaluated in untrained (n = 67) vs. soccer-trained (n = 65) 9- to 16-year-old schoolgirls.Methods:Tests were performed 7 days apart for reliability (9- to 11-year-old: Yo-Yo intermittent recovery level 1 children’s test; 12- to 13-yearold: Yo-Yo intermittent endurance level 1; and 14- to 16-year-old: Yo-Yo intermittent endurance level 2).Results:Yo-Yo distance covered was 40% (776 ± 324 vs. 556 ± 156 m), 85% (1252 ± 484 vs. 675 ± 252 m) and 138% (674 ± 336 vs. 283 ± 66 m) greater (p ≤ .010) for the soccer-trained than for the untrained girls aged 9–11, 12–13 and 14–16 years, respectively. Typical errors of measurement for Yo-Yo distance covered, expressed as a percentage of the coefficient of variation (confidence limits), were 10.1% (8.1–13.7%), 11.0% (8.6–15.4%) and 11.6% (9.2–16.1%) for soccer players, and 11.5% (9.1–15.8%), 14.1% (11.0–19.8%) and 10.6% (8.5–14.2%) for untrained girls, aged 9–11, 12–13 and 14–16, respectively. Intraclass correlation coefficient values for test-retest were excellent (0.795–0.973) in both groups. No significant differences were observed in relative exercise peak heart rate (%HRpeak) between groups during test and retest.Conclusion:The Yo-Yo tests are reliable for determining intermittent-exercise capacity and %HRpeak for soccer players and untrained 9- to 16-year-old girls. They also possess construct validity with better performances for soccer players compared with untrained age-matched girls, despite similar %HRpeak.

Assessing Shortened Field-Based Heart-Rate-Variability-Data Acquisition in Team-Sport Athletes

2016 ◽  
Vol 11 (2) ◽  
pp. 154-158 ◽  
Author(s):  
Lucas A. Pereira ◽  
Andrew A. Flatt ◽  
Rodrigo Ramirez-Campillo ◽  
Irineu Loturco ◽  
Fabio Y. Nakamura
Keyword(s):  
Heart Rate ◽  
Time Course ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Team Sport ◽  
Short Term ◽  
Intraclass Correlation Coefficients ◽  
Dependent Variables ◽  
Stabilization Period ◽  
Term Analysis

Purpose:To compare the LnRMSSD and the LnRMSSD:RR values obtained during a 5-min stabilization period with the subsequent 5-min criterion period and to determine the time course for LnRMSSD and LnRMSSD:RR stabilization at 1-min analysis in elite team-sport athletes.Participants:35 elite futsal players (23.9 ± 4.5 y, 174.2 ± 4.0 cm, 74.0 ± 7.5 kg, 1576.2 ± 396.3 m in the Yo-Yo test level 1).Methods:The RR-interval recordings were obtained using a portable heart-rate monitor continuously for 10 min in the seated position. The 2 dependent variables analyzed were LnRMSSD and LnRMSSD:RR. To calculate the magnitude of the differences between time periods, effect-size (ES) analysis was conducted. To assess the levels of agreement, intraclass correlation coefficients (ICC) and Bland-Altman plots were used.Results:The LnRMSSD and LnRMSSD:RR values obtained during the stabilization period (0–5 min) presented very large to nearly perfect ICCs with the values obtained during the criterion period (5–10 min), with trivial ESs. In the ultra-short-term analysis (ie, 1-min segments) the data showed slightly less accurate results, but only trivial to small differences with very large to nearly perfect ICCs were found.Conclusion:LnRMSSD and LnRMSSD:RR can be recorded in 5 min without traditional stabilization periods under resting conditions in team-sport athletes. The ultra-short-term analysis (1 min) also revealed acceptable levels of agreement with the criterion.

The validity and reliability of ultra-short-term heart rate variability parameters and the influence of physiological covariates

2021 ◽  
Author(s):  
Joel S. Burma ◽  
Sarah Graver ◽  
Lauren N. Miutz ◽  
Alannah Macaulay ◽  
Paige V. Copeland ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domain ◽  
Repeated Measures ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Validity And Reliability ◽  
Short Term ◽  
Physiological Variables ◽  
Orthostatic Position

Background: Ultra-short-term (UST) heart rate variability (HRV) metrics have increasingly been proposed as surrogates for short-term HRV metrics. However, the concurrent validity, within-day reliability, and between-day reliability of UST HRV have yet to be comprehensively documented. Methods: Thirty-six adults (18 males, age: 26 ± 5 years, BMI: 24 ± 3 kg/m2) were recruited. Measures of HRV were quantified in a quiet-stance upright orthostatic position via three-lead electrocardiogram (ADInstruments, FE232 BioAmp). All short-term data recordings were 300-seconds in length and five UST time points (i.e., 30-seconds, 60-seconds, 120-seconds, 180-seconds, and 240-seconds) were extracted from the original 300-second recording. Bland-Altman plots with 95% limits of agreement, repeated measures ANOVA, and two-tailed paired t-tests demarcated differences between UST and short-term recordings. Linear regressions, coefficient of variation, intraclass correlation coefficients, and other tests examined the validity and reliability in both time- and frequency-domains. Results: No group differences were noted between all short-term and UST measures, for either time- (all p>0.202) or frequency-domain metrics (all p>0.086). A longer recording duration was associated with augmented validity and reliability, that was less impacted by confounding influences from physiological variables (e.g., respiration rate, carbon dioxide end-tidals, and blood pressure). Conclusively, heart rate, time-domain, and relative frequency-domain HRV metrics were acceptable with recordings greater or equal to 60s, 240s, and 300s, respectively. Conclusions: Future studies employing UST HRV metrics, should thoroughly understand the methodological requirements to obtain accurate results. Moreover, a conservative approach should be utilized regarding the minimum acceptable recording duration, which ensures valid/reliable HRV estimates are obtained.

scholarly journals Estimating the Relationship between Heart Rate and Power Output for Short Term Cycling Exercises

2015 ◽  
Vol 112 ◽  
pp. 237-243
Author(s):  
Daniel Meyer ◽  
Carolin Dungs ◽  
Veit Senner
Keyword(s):  
Heart Rate ◽  
Power Output ◽  
Short Term ◽  
The Relationship

Comparison of Prolonged Rowing on Fixed and Free-floating Ergometers in Competitive Rowers

2018 ◽  
Vol 39 (11) ◽  
pp. 840-845
Author(s):  
Hugo Kerhervé ◽  
Benjamin Chatel ◽  
Sébastien Reboah ◽  
Jérémy Rossi ◽  
Pierre Samozino ◽  
...  
Keyword(s):  
Heart Rate ◽  
Lumbar Spine ◽  
Blood Lactate ◽  
Power Output ◽  
Muscle Activity ◽  
Submaximal Exercise ◽  
Erector Spinae ◽  
Lower Limbs ◽  
Duty Factor ◽  
Stroke Rate

AbstractThis study aimed to compare the effect of a 40-min submaximal rowing exercise performed on ergometers with fixed and free-floating designs. Heart rate, blood lactate concentration, force and rate of force development (RFD) at the handle, stroke rate, duty factor, movement kinematics of upper and lower limbs, and muscle activity of lumbar spine muscles iliocostalis and erector spinae (IC and ESL) were measured at the beginning and at the end of a 40-min rowing exercise at ~60% of peak power output, in eleven competitive rowers. Force of lumbar extension decreased, and blood lactate increased following submaximal exercise on both ergometers. No changes in RFD, duty factor, and muscle activity of IC occurred in response to submaximal exercise. Rowing on DYN elicited higher heart rate and modified rowing kinematics (stroke rate, acceleration of the lower limbs) without changes in temporal or force application patterns compared to rowing on STAT at the same power output. Rowing on DYN was also associated with increased activity of the lumbar spine muscle ESL, which could originate from a greater range of motion, or from an increased lumbar spine muscle activity, at the same overall power.

scholarly journals Reliability and Usefulness of the 30-15 Intermittent Fitness Test in Male and Female Professional Futsal Players

2017 ◽  
Vol 60 (1) ◽  
pp. 191-198 ◽  
Author(s):  
Santiago Valladares-Rodríguez ◽  
Ezequiel Rey ◽  
Marcos Mecías-Calvo ◽  
Roberto Barcala-Furelos ◽  
Antonio J. Bores-Cerezal
Keyword(s):  
Heart Rate ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Coefficient Of Variation ◽  
Intraclass Correlation ◽  
Meaningful Change ◽  
Good Reliability ◽  
Male And Female ◽  
Fitness Test ◽  
Typical Error

Abstract The purpose of this study was to determine the reliability and usefulness of the 30-15 Intermittent Fitness Test (30-15IFT) in professional male and female futsal players. Thirteen male (24.4 ± 5.6 years; 174.5 ± 10.3 cm; 70.3 ± 9.9 kg) and fourteen female (23.3 ± 4.5 years; 165.8 ± 6.2 cm; 61.7 ± 5.5 kg) professional futsal players performed the 30-15IFT on two occasions, separated by 5 days. Maximal intermittent running velocity (VIFT) and heart rate at exhaustion (HRpeak) data were collected for both tests. Reliability was assessed by the intraclass correlation coefficient (ICC), typical error (TE) expressed as a coefficient of variation (CV), and smallest worthwhile change (SWC). VIFT demonstrated very good reliability between sessions, both for male (ICC = 0.92) and female (ICC = 0.96) players. As the TE for VIFT and HRpeak was similar to the calculated SWC for both male and female players, the usefulness of the test was rated as “medium”. A change in performance of at least 2 stages in male players, or a change of more than 1 stage in female players could be interpreted as a meaningful change in aerobic futsal fitness. The results of this study demonstrate that the 30-15IFT is both a reliable and useful test for male and female professional futsal players.

A Nonmotorized Treadmill Test to Assess Children’s Short-Term Power Output

2000 ◽  
Vol 12 (1) ◽  
pp. 91-100 ◽  
Author(s):  
Nicola C. Sutton ◽  
David J. Childs ◽  
Oded Bar-Or ◽  
Neil Armstrong
Keyword(s):  
Statistical Analysis ◽  
Power Output ◽  
Peak Power ◽  
Anaerobic Performance ◽  
Treadmill Test ◽  
Short Term ◽  
Mean Power ◽  
Wingate Anaerobic Test ◽  
Post Exercise ◽  
Anaerobic Test

The purpose of this study was to develop a nonmotorized treadmill sprint test (ExNMT) to assess children’s short-term power output, to establish the test’s repeatability, and to compare the results to corresponding Wingate anaerobic test (WAnT) measurements. Nineteen children (aged 10.9±0.3 years) completed 2 ExNMTs and 2 WAnTs. Statistical analysis revealed coefficients of repeatability for the ExNMT that compared very favorably with the WAnT for both peak power (26.6 vs. 44.5 W) and mean power (15.3 vs. 42.1 W). The validity of the ExNMT as a test of anaerobic performance is reflected by significant correlations (p ≤.05) with the WAnT (peak power, r = 0.82; mean power, r = 0.88) and reinforced by the relatively high post-exercise blood lactate concentrations (7.1 ± 1.3 vs. 5.6 ± 1.5 mmol · L−1 for the ExNMT and WAnT, respectively). This study has developed a promising laboratory running test with which to examine young people’s short-term power output.

scholarly journals Test–Retest Reliability of Student-Administered Health-Related Fitness Tests in School Settings

2020 ◽  
Vol 32 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Brendan T. O’Keeffe ◽  
Alan E. Donnelly ◽  
Ciaran MacDonncha
Keyword(s):  
Coefficient Of Variation ◽  
Intraclass Correlation ◽  
Retest Reliability ◽  
School Settings ◽  
Fitness Tests ◽  
Health Related ◽  
Test Retest Reliability ◽  
Research Assistants ◽  
Health Related Fitness ◽  
Push Up

Purpose: To examine the test–retest reliability of student-administered (SA) health-related fitness tests in school settings and to compare indices of reliability with those taken by trained research-assistants. Methods: Participants (n = 86; age: 13.43 [0.33] y) were divided into 2 groups, SA (n = 45, girls = 26) or research-assistant administered (RA; n = 41, girls = 21). The SA group had their measures taken by 8 students (age: 15.59 [0.56] y, girls = 4), and the RA group had their measures taken by 8 research-assistants (age: 21.21 [1.38], girls = 5). Tests were administered twice by both groups, 1 week apart. Tests included body mass index, handgrip strength, standing broad jump, isometric plank hold, 90° push-up, 4 × 10-m shuttle run, back-saver sit and reach, and blood pressure. Results: Intraclass correlation coefficients for SA (≥.797) and RA (≥.866) groups were high, and the observed systematic error (Bland–Altman plot) between test 1 and test 2 was close to 0 for all tests. The coefficient of variation was less than 10% for all tests in the SA group, aside from the 90° push-up (24.3%). The SA group had a marginally lower combined mean coefficient of variation across all tests (6.5%) in comparison with the RA group (6.8%). Conclusion: This study demonstrates that, following familiarization training, SA health-related fitness tests in school-based physical education programs can be considered reliable.

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