Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device
This study aims to determine test-retest reliability of phase-specific information during initial acceleration, deceleration, and re-acceleration phases of different change-of-direction (CoD) tests using a motorized resistance device (MRD). A total of 21 participants (16 males and five females, with...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-10-01
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| Series: | Frontiers in Sports and Active Living |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fspor.2023.1212414/full |
| _version_ | 1797653097690955776 |
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| author | Frederic Westheim Øyvind Gløersen Damian Harper Håkon Laugsand Ola Eriksrud |
| author_facet | Frederic Westheim Øyvind Gløersen Damian Harper Håkon Laugsand Ola Eriksrud |
| author_sort | Frederic Westheim |
| collection | DOAJ |
| description | This study aims to determine test-retest reliability of phase-specific information during initial acceleration, deceleration, and re-acceleration phases of different change-of-direction (CoD) tests using a motorized resistance device (MRD). A total of 21 participants (16 males and five females, with mean age of 22.3 ± 3.9 years, body mass of 75.2 ± 6.9 kg, height of 177.9 ± 6.8 cm) completed the modified 505 (m505), 10-0-5, and 15-0-5 CoD tests on four different test sessions while exposed to an external load (3 kg) provided by the MRD. Outcome variables included overall and phase-specific kinetic (force, power, and impulse) and kinematic (time, distance, velocity, and acceleration/deceleration) data during the initial acceleration, deceleration, and re-acceleration phases. The deceleration and re-acceleration phases were further divided into two subphases, namely, early and late subphases, using 50% of maximum velocity. Reliability was assessed using an intraclass correlation coefficient (ICC), coefficient of variation (CV), typical error (TE), and minimal detectable change (MDC). Good to excellent ICC values (>0.75) and acceptable (<10%) to good (<5%) CV values were observed for most outcome measurements. Specifically, 80.1% (822 out of 1,026) of all variables showed good or better relative reliability (i.e., ICC ≥ 0.75), while 97.0% (995 out of 1,026) of all variables showed acceptable or better absolute reliability (i.e., CV < 10%). In conclusion, the present study demonstrates that the MRD can obtain reliable phase-specific outcome measurements across different CoD tests, providing coaches and researchers with new opportunities to advance our understanding of CoD ability and inform more advanced CoD training prescriptions. |
| first_indexed | 2024-03-11T16:39:36Z |
| format | Article |
| id | doaj.art-cf1a8cbec92446a285833e90a9739f57 |
| institution | Directory Open Access Journal |
| issn | 2624-9367 |
| language | English |
| last_indexed | 2024-03-11T16:39:36Z |
| publishDate | 2023-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Sports and Active Living |
| spelling | doaj.art-cf1a8cbec92446a285833e90a9739f572023-10-23T09:15:40ZengFrontiers Media S.A.Frontiers in Sports and Active Living2624-93672023-10-01510.3389/fspor.2023.12124141212414Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance deviceFrederic Westheim0Øyvind Gløersen1Damian Harper2Håkon Laugsand3Ola Eriksrud4Biomechanics Laboratory, Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NorwayBiomechanics Laboratory, Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NorwaySchool of Sport and Health Sciences, Institute of Coaching and Performance, University of Central Lancashire, Preston, United KingdomBiomechanics Laboratory, Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NorwayBiomechanics Laboratory, Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NorwayThis study aims to determine test-retest reliability of phase-specific information during initial acceleration, deceleration, and re-acceleration phases of different change-of-direction (CoD) tests using a motorized resistance device (MRD). A total of 21 participants (16 males and five females, with mean age of 22.3 ± 3.9 years, body mass of 75.2 ± 6.9 kg, height of 177.9 ± 6.8 cm) completed the modified 505 (m505), 10-0-5, and 15-0-5 CoD tests on four different test sessions while exposed to an external load (3 kg) provided by the MRD. Outcome variables included overall and phase-specific kinetic (force, power, and impulse) and kinematic (time, distance, velocity, and acceleration/deceleration) data during the initial acceleration, deceleration, and re-acceleration phases. The deceleration and re-acceleration phases were further divided into two subphases, namely, early and late subphases, using 50% of maximum velocity. Reliability was assessed using an intraclass correlation coefficient (ICC), coefficient of variation (CV), typical error (TE), and minimal detectable change (MDC). Good to excellent ICC values (>0.75) and acceptable (<10%) to good (<5%) CV values were observed for most outcome measurements. Specifically, 80.1% (822 out of 1,026) of all variables showed good or better relative reliability (i.e., ICC ≥ 0.75), while 97.0% (995 out of 1,026) of all variables showed acceptable or better absolute reliability (i.e., CV < 10%). In conclusion, the present study demonstrates that the MRD can obtain reliable phase-specific outcome measurements across different CoD tests, providing coaches and researchers with new opportunities to advance our understanding of CoD ability and inform more advanced CoD training prescriptions.https://www.frontiersin.org/articles/10.3389/fspor.2023.1212414/fullphase analysisreliabilitymotorized resistance technologydecelerationre-acceleration |
| spellingShingle | Frederic Westheim Øyvind Gløersen Damian Harper Håkon Laugsand Ola Eriksrud Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device Frontiers in Sports and Active Living phase analysis reliability motorized resistance technology deceleration re-acceleration |
| title | Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device |
| title_full | Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device |
| title_fullStr | Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device |
| title_full_unstemmed | Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device |
| title_short | Reliability of phase-specific outcome measurements in change-of-direction tests using a motorized resistance device |
| title_sort | reliability of phase specific outcome measurements in change of direction tests using a motorized resistance device |
| topic | phase analysis reliability motorized resistance technology deceleration re-acceleration |
| url | https://www.frontiersin.org/articles/10.3389/fspor.2023.1212414/full |
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