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Reliability of tethered swimming evaluation in age group swimmers.

Amaro N, Marinho DA, Batalha N, Marques MC, Morouço P - J Hum Kinet (2014)

Bottom Line: Each swimmer performed two 30 second maximal intensity tethered swimming tests, on separate days.Both consistency and reliability were very strong, with Cronbach's Alpha values ranging from 0.970 to 0.995.These results indicate that tethered swimming can be used to evaluate age group swimmers.

View Article: PubMed Central - PubMed

Affiliation: Research Centre for Human Movement Sciences, Polytechnic Institute of Leiria, Leiria, Portugal. ; Research Centre in Sports Sciences, Health and Human Development, Covilhã, Portugal.

ABSTRACT
The aim of the present study was to examine the reliability of tethered swimming in the evaluation of age group swimmers. The sample was composed of 8 male national level swimmers with at least 4 years of experience in competitive swimming. Each swimmer performed two 30 second maximal intensity tethered swimming tests, on separate days. Individual force-time curves were registered to assess maximum force, mean force and the mean impulse of force. Both consistency and reliability were very strong, with Cronbach's Alpha values ranging from 0.970 to 0.995. All the applied metrics presented a very high agreement between tests, with the mean impulse of force presenting the highest. These results indicate that tethered swimming can be used to evaluate age group swimmers. Furthermore, better comprehension of the swimmers ability to effectively exert force in the water can be obtained using the impulse of force.

No MeSH data available.


Experimental apparatus of the tethered swimming tests
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f1-jhk-41-155: Experimental apparatus of the tethered swimming tests

Mentions: The testing apparatus consisted of a load-cell system (Globus™, Codognè, Italy) recording at 100 Hz with a measurement capacity of 4903 N. The load-cell was connected by a cable to a Globus Ergometer data acquisition system (Globus™, Codognè, Italy) that exported the data in ASCII format to a PC. The load-cell was attached to the starting block (Figure 1) through a chain locked with a certified aluminum carabiner (Petzl CE EN 362, CE EN 12275, type K - major axis strength: 28 kN). It was proofed and tested prior to testing and between tests. The load-cell calibration was verified with the use of 5 kg, 10 kg and 20 kg standard weights. Subjects were wearing a nylon belt attached to a steel cable with a certified aluminum carabiner (Petzl CE EN 362, CE EN 12275, type K - major axis strength: 28 kN) with 3.5 m length (0.5 cm diameter). The attachment of the load-cell to the starting block created a 5.7° angle in relation to the water surface.


Reliability of tethered swimming evaluation in age group swimmers.

Amaro N, Marinho DA, Batalha N, Marques MC, Morouço P - J Hum Kinet (2014)

Experimental apparatus of the tethered swimming tests
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4120449&req=5

f1-jhk-41-155: Experimental apparatus of the tethered swimming tests
Mentions: The testing apparatus consisted of a load-cell system (Globus™, Codognè, Italy) recording at 100 Hz with a measurement capacity of 4903 N. The load-cell was connected by a cable to a Globus Ergometer data acquisition system (Globus™, Codognè, Italy) that exported the data in ASCII format to a PC. The load-cell was attached to the starting block (Figure 1) through a chain locked with a certified aluminum carabiner (Petzl CE EN 362, CE EN 12275, type K - major axis strength: 28 kN). It was proofed and tested prior to testing and between tests. The load-cell calibration was verified with the use of 5 kg, 10 kg and 20 kg standard weights. Subjects were wearing a nylon belt attached to a steel cable with a certified aluminum carabiner (Petzl CE EN 362, CE EN 12275, type K - major axis strength: 28 kN) with 3.5 m length (0.5 cm diameter). The attachment of the load-cell to the starting block created a 5.7° angle in relation to the water surface.

Bottom Line: Each swimmer performed two 30 second maximal intensity tethered swimming tests, on separate days.Both consistency and reliability were very strong, with Cronbach's Alpha values ranging from 0.970 to 0.995.These results indicate that tethered swimming can be used to evaluate age group swimmers.

View Article: PubMed Central - PubMed

Affiliation: Research Centre for Human Movement Sciences, Polytechnic Institute of Leiria, Leiria, Portugal. ; Research Centre in Sports Sciences, Health and Human Development, Covilhã, Portugal.

ABSTRACT
The aim of the present study was to examine the reliability of tethered swimming in the evaluation of age group swimmers. The sample was composed of 8 male national level swimmers with at least 4 years of experience in competitive swimming. Each swimmer performed two 30 second maximal intensity tethered swimming tests, on separate days. Individual force-time curves were registered to assess maximum force, mean force and the mean impulse of force. Both consistency and reliability were very strong, with Cronbach's Alpha values ranging from 0.970 to 0.995. All the applied metrics presented a very high agreement between tests, with the mean impulse of force presenting the highest. These results indicate that tethered swimming can be used to evaluate age group swimmers. Furthermore, better comprehension of the swimmers ability to effectively exert force in the water can be obtained using the impulse of force.

No MeSH data available.