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Low-Volume High-Intensity Race-Pace Training in Finswimmers

Individual Responses to a Low-Volume, High-Intensity Race-Pace Training Block in Finswimmers From the Antioquia Underwater Activities League: A Prospective Single-Group Case Series

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07691723
Acronym
LVHI-FS-TdeA
Enrollment
5
Registered
2026-07-09
Start date
2026-04-01
Completion date
2026-05-02
Last updated
2026-07-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Athletic Performance, Exercise Performance

Keywords

finswimming, race-pace training, low-volume training, high-intensity training

Brief summary

This single-group case series describe individual responses to a 9-week low-volume, high-intensity race-pace training block in 5 finswimmers from the Antioquia Underwater Activities League (LASA), Colombia. The intervention will be oriented towards race-specific swimming paces and will include repeated swimming efforts prescribed according to each athlete's main competitive event. External training load, heart rate, rating of perceived exertion, pace stability, and sport performance were monitored throughout the block. The primary outcome was the change in performance time in each athlete's main competitive event from baseline to post-intervention. The study used an intra-individual descriptive approach and did not include randomisation, a control group, or causal inference.

Detailed description

Finswimming is a high-speed aquatic sport in which performance in short and middle-distance events depends on the ability to produce and sustain race-specific velocity. Traditional aquatic training models often emphasise high training volume; however, for events lasting from seconds to a few minutes, race-pace work, neuromuscular quality, and individualised load monitoring may be particularly relevant. This study follows 5 finswimmers from the Antioquia Underwater Activities League (LASA) during a 9-week low-volume, high-intensity training block. All participants received the same general training approach, but training distances, repetitions, target times, and race-pace references were individualised according to each athlete's main competitive event. Before the intervention, athletes completed a basic characterisation and a baseline performance assessment using an official competition result. Training target times were estimated from the baseline performance. During the 9-week block, the investigators recorded external load variables, including distance, repetitions, weekly volume, target time, and actual time for each relevant repetition. Internal load were monitored using heart rate and rating of perceived exertion. Pace stability were estimated from repeated times in event-specific distances using descriptive indicators such as mean time, standard deviation, and coefficient of variation. After the intervention, performance were reassessed in the athlete's main event through an official competition or a comparable standardised control test. Data analysis were focus on individual responses, weekly trends, and descriptive changes from baseline to post-intervention. The study were not include a control group or randomisation; therefore, findings were interpreted as exploratory and non-causal.

Interventions

BEHAVIORALLow-volume high-intensity race-pace finswimming training

The intervention will consist of a 9-week finswimming training block oriented towards race-specific pace. Participants will perform repeated swimming efforts prescribed according to individual target times derived from baseline performance. Training sessions will include event-specific distances, repetitions, recovery periods, and target intensities. External load will be monitored through distance, repetitions, weekly volume, target time, and actual time. Internal load will be monitored using heart rate and rating of perceived exertion. Training volume will be adjusted according to the athlete's event profile and reduced towards the final phase when tapering is required.

Sponsors

Federal University of Vicosa
Lead SponsorOTHER
Universidad de Antioquia
CollaboratorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Intervention model description

All participants will receive a 9-week low-volume, high-intensity finswimming training block prescribed according to individual race-pace targets.

Eligibility

Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Finswimmers affiliated with the Antioquia Underwater Activities League (LASA). * Regular participation in finswimming training. * A defined main competitive event. * Availability to complete the 9-week follow-up period. * Ability to complete high-intensity swimming training according to the regular sport programme. * Written informed consent from adult participants. * For participants under 18 years of age, written informed consent from a parent or legal guardian and written assent from the participant.

Exclusion criteria

* Active musculoskeletal injury. * Relevant pain or acute illness at baseline. * Medical restriction for high-intensity swimming exercise. * Inability to complete the planned follow-up. * Withdrawal of consent or assent. * Insufficient attendance or incomplete records for the main study variables. * Any condition judged by the research team or coaching staff to compromise participant safety during high-intensity swimming.

Design outcomes

Primary

MeasureTime frameDescription
Change from baseline in main-event finswimming performance timeBaseline and week 9Performance time, in seconds, will be recorded for each participant's main competitive event. The baseline value will be obtained from an official competition result or a standardised control test before the training block. The post-intervention value will be obtained from an official competition result or a comparable standardised control test after the 9-week block. A lower time will indicate better performance.

Secondary

MeasureTime frameDescription
Change from baseline in mean swimming velocityBaseline and week 9Mean swimming velocity will be calculated from the performance distance and time in each participant's main event. Velocity will be expressed in metres per second. A higher value will indicate better performance.
Weekly external training volumeWeekly from baseline to week 9External training volume will be quantified as the total metres completed per week during recorded race-pace or event-specific swimming repetitions.
Weekly mean heart rate during recorded swimming repetitionsWeekly from baseline to week 9Heart rate will be recorded during training sessions using a heart rate monitor, sport watch, or equivalent device. Weekly mean heart rate will be reported in beats per minute.
Weekly rating of perceived exertionWeekly from baseline to week 9Rating of perceived exertion will be recorded using a numerical perceived exertion scale after relevant sets or at the end of the session, according to the predefined monitoring protocol. Weekly mean values will be described for each participant.
Pace stability during event-specific swimming repetitionsRepeated training sessions from baseline to week 9Pace stability will be estimated from repeated swimming times in event-specific distances. The coefficient of variation will be calculated for each participant and distance when repeated measurements are available. Lower values will indicate greater pace stability.

Countries

Colombia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 14, 2026