Swimming performances in long distance open-water events with and without wetsuit.

Sebastian Ulsamer,Beat Knechtle,Romuald Lepers,Thomas Rosemann,Christoph Alexander Rüst

doi:10.1186/2052-1847-6-20

Sebastian Ulsamer, Beat Knechtle + Show 3 more

Open Access

https://doi.org/10.1186/2052-1847-6-20

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Abstract

BackgroundExisting literature showed improved swimming performances for swimmers wearing wetsuits competing under standardized conditions in races held in pools on short to middle distances. Data about the influence of wetsuits on swimming performances in long and ultra-long open-water swimming races are missing. It is unknown whether the benefit of wearing wetsuits is comparable in men and women. The aim of this study was to investigate the influence of wearing a wetsuit on open-water swimming performances at the 26.4 km ‘Marathon Swim in Lake Zurich’ in Lake Zurich, Switzerland, and the 3.8 km Lake Ontario Swim Team-Race (LOST-Race) in Lake Ontario, Canada.MethodsRace times of the fastest female and male swimmers competing with and without wetsuit were compared using multi-level regression analyses and analysis of variance.ResultsIn the ‘Marathon Swim’ in Lake Zurich, wearing a wetsuit had no effect on race time regarding the gender where athletes wearing a wetsuit were not faster than athletes without wetsuit. However, the ten fastest men wearing a wetsuit (410.6 ± 26.7 min) were faster (32.7%, p < 0.01) than the ten fastest women without wetsuit (544.9 ± 81.3 min). In the ‘LOST-Race’, the top ten men wearing a wetsuit (51.7 ± 2.5 min) were faster (13.2%, p < 0.01) than the top ten women wearing a wetsuit (58.5 ± 3.2 min). Additionally, the top ten men without wetsuit (52.1 ± 2.4 min) were faster (19.6%, p < 0.01) than the top ten women without wetsuit (62.3 ± 2.5 min). The top ten women wearing a wetsuit (58.5 ± 3.2 min) were faster (6.5%, p < 0.01) than top ten women without a wetsuit (62.3 ± 25 min).ConclusionsThese results suggest that wearing a wetsuit had a positive influence on swimming speed for both women and men but the benefit of the use of wetsuits seemed to depend on additional factors (i.e. race distance). Women seemed to benefit more from wearing wetsuits than men in longer open-water ultra-distance swimming races.

Highlights

Existing literature showed improved swimming performances for swimmers wearing wetsuits competing under standardized conditions in races held in pools on short to middle distances
Long-distance swimming splits are included in other ultra-endurance events such as long-distance triathlons (i.e. Ironman triathlon) consisting of 3.8 km swimming, 180 km cycling and 42 km running [7]
The same 3.8 km swimming distance as held in Ironman competitions is covered by swimmers competing in the ‘LOST-Race’ (i.e. Lake Ontario Swim Team-Race), an open-water swimming race held in the Lake Ontario, Canada

Summary

Introduction

Existing literature showed improved swimming performances for swimmers wearing wetsuits competing under standardized conditions in races held in pools on short to middle distances. Data about the influence of wetsuits on swimming performances in long and ultra-long open-water swimming races are missing. It is unknown whether the benefit of wearing wetsuits is comparable in men and women. The aim of this study was to investigate the influence of wearing a wetsuit on open-water swimming performances at the 26.4 km ‘Marathon Swim in Lake Zurich’ in Lake Zurich, Switzerland, and the 3.8 km Lake Ontario Swim Team-Race (LOST-Race) in Lake Ontario, Canada. The same 3.8 km swimming distance as held in Ironman competitions is covered by swimmers competing in the ‘LOST-Race’ (i.e. Lake Ontario Swim Team-Race), an open-water swimming race held in the Lake Ontario, Canada.

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