Strength and Power Testing of Athletes: A Multicenter Study of Test-Retest Reliability

Author's accepted manuscriptAccepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance (IJSPP), 2022, 17 (7): 1103-1110, https://doi.org/10.1123/ijspp.2021-0558. © Human Kinetics, Inc.Purpose:This study examined the test–retest reliability of common assessments for measuring strength and power of the lowerbody in high-performing athletes.Methods:A total of 100 participants, including both male (n=83) and female (n=17) athletes(21 [4] y, 182 [9] cm, and 78 [12] kg), were recruited for this study, using a multicenter approach. The participants underwentphysical testing 4 times. Thefirst 2 sessions (1 and 2) were separated by∼1 week, followed by a period of 2 to 6 months, whereasthe last 2 sessions (3 and 4) were again separated by∼1 week. The test protocol consisted of squat jumps, countermovementjumps, jump and reach, 30-m sprint, 1-repetition-maximum squat, sprint cycling, and a leg-press test.Results:The typical error(%) ranged from 1.3% to 8.5% for all assessments. The change in means ranged from−1.5% to 2.5% for all assessments, whereasthe interclass correlation coefficient ranged from .85 to .97. The smallest worthwhile change (0.2 of baseline SD) ranged from1.2% to 5.0%. The ratio between the typical error (%) and the smallest worthwhile change (%) ranged from 0.5 to 1.2. Whenobserving the reliability across testing centers, considerable differences in reliability were observed (typical error [%] ratio: 0.44–1.44).Conclusions:Most of the included assessments can be used with confidence by researchers and coaches to measurestrength and power in athletes. Our results highlight the importance of controlling testing reliability at each testing center and notrelying on data from others, despite having applied the same protocol.acceptedVersio

Etablering af biogene rev, Hvorfor og hvordan gøres det?

Biogene rev er vigtige marine habitater, der består af hårde strukturer skabt af dyr som fx hestemusling, europæisk flad østers, blåmusling og rørbyggende orme, som rager op fra havbunden. Der opbygges således over tid en kompleks tredimensionel struktur, hvor andre marine organismer kan bosætte sig, skjule sig eller søge føde. Derfor er der ofte er en høj biodiversitet associeret til biogene rev. Siden 1800- tallet har der generelt været tilbagegang i forekomsten af biogene rev, men i de senere år, har der internationalt og nationalt været en øget interesse i at genskabe biogene rev. Imidlertid har miljøforholdene ændret sig siden 1800-tallet, hvorfor der er en række parametre, der skal overvejes og vurderes i forhold til at udvælge områder egnede til etablering af biogene rev. Præsentationen vil tage udgangspunkt i vejledningen for etablering af biogene rev fra Center for Marin Naturgenopretning samt et konkret eksempel på proces og udfordringer