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Measuring kinematic variables in front crawl swimming using accelerometers: a validation study.

Callaway AJ - Sensors (Basel) (2015)

Bottom Line: Objective data on swimming performance is needed to meet the demands of the swimming coach and athlete.Four swimmers required individual adaptation to the stroke phase calculation method.The developed algorithm was developed using a search window relative to the body roll (peak/trough).

View Article: PubMed Central - PubMed

ABSTRACT
Objective data on swimming performance is needed to meet the demands of the swimming coach and athlete. The purpose of this study is to use a multiple inertial measurement units to calculate Lap Time, Velocity, Stroke Count, Stroke Duration, Stroke Rate and Phases of the Stroke (Entry, Pull, Push, Recovery) in front crawl swimming. Using multiple units on the body, an algorithm was developed to calculate the phases of the stroke based on the relative position of the body roll. Twelve swimmers, equipped with these devices on the body, performed fatiguing trials. The calculated factors were compared to the same data derived to video data showing strong positive results for all factors. Four swimmers required individual adaptation to the stroke phase calculation method. The developed algorithm was developed using a search window relative to the body roll (peak/trough). This customization requirement demonstrates that single based devices will not be able to determine these phases of the stroke with sufficient accuracy.

No MeSH data available.


Related in: MedlinePlus

Bland-Altman plot of Recovery Duration Error.
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sensors-15-11363-f015: Bland-Altman plot of Recovery Duration Error.

Mentions: Bland-Altman plots (Figure 12, Figure 13, Figure 14 and Figure 15) showing the relative error in percentage terms shows that for each phase there are only four entry phases which were outside of the 95% limits, two for the pull phase, three for push and five for the recovery. This shows some promising results.


Measuring kinematic variables in front crawl swimming using accelerometers: a validation study.

Callaway AJ - Sensors (Basel) (2015)

Bland-Altman plot of Recovery Duration Error.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4481924&req=5

sensors-15-11363-f015: Bland-Altman plot of Recovery Duration Error.
Mentions: Bland-Altman plots (Figure 12, Figure 13, Figure 14 and Figure 15) showing the relative error in percentage terms shows that for each phase there are only four entry phases which were outside of the 95% limits, two for the pull phase, three for push and five for the recovery. This shows some promising results.

Bottom Line: Objective data on swimming performance is needed to meet the demands of the swimming coach and athlete.Four swimmers required individual adaptation to the stroke phase calculation method.The developed algorithm was developed using a search window relative to the body roll (peak/trough).

View Article: PubMed Central - PubMed

ABSTRACT
Objective data on swimming performance is needed to meet the demands of the swimming coach and athlete. The purpose of this study is to use a multiple inertial measurement units to calculate Lap Time, Velocity, Stroke Count, Stroke Duration, Stroke Rate and Phases of the Stroke (Entry, Pull, Push, Recovery) in front crawl swimming. Using multiple units on the body, an algorithm was developed to calculate the phases of the stroke based on the relative position of the body roll. Twelve swimmers, equipped with these devices on the body, performed fatiguing trials. The calculated factors were compared to the same data derived to video data showing strong positive results for all factors. Four swimmers required individual adaptation to the stroke phase calculation method. The developed algorithm was developed using a search window relative to the body roll (peak/trough). This customization requirement demonstrates that single based devices will not be able to determine these phases of the stroke with sufficient accuracy.

No MeSH data available.


Related in: MedlinePlus