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Eccentric Strength Training of Ankle Joint Muscles in Swimming

The Effect of Ankle Muscle Strengthening on Underwater Dolphin Kick Performance in Young Swimmers

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05393687
Enrollment
26
Registered
2022-05-26
Start date
2016-08-02
Completion date
2016-10-09
Last updated
2022-05-26

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

Conditions

Resistance Training

Keywords

swimming, resistance training, youth sports, elastic band, ankle

Brief summary

This study was conducted to investigate the effectiveness of ankle muscle strengthening program of 8 weeks on the underwater dolphin kick performance in young swimmers. This study was a randomized controlled trial. Swimmers was divided in two groups; eccentric ankle muscle-strengthening exercises and control group. The outcome measures were strength of plantar flexors, dorsal flexors, internal rotators, external rotators and 5-meter underwater dolphin kick time.

Detailed description

There is limited information on the effectiveness of ankle joint muscles in respect to the knee, hip, back and upper extremity muscles creating the propulsive forces for the feet to transfer the moment force towards water. Therefore, it is aimed to observe the effects of eccentric ankle muscle-strengthening exercises given by means of elastic bands on the Underwater Dolphin Kick performance of young swimmers.

Interventions

OTHEREccentric exercise

progressive eccentric exercise with elastic band

Sponsors

Istinye University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Intervention model description

In order to examine the effect of strengthening exercises on performance amongst competitive young swimmers, a randomized controlled trial was undertaken. Swimmers were divided into two groups: Exercise (n=13) and the control groups (n=13). Both groups were assessed for 5-metre underwater swim time and ankle muscle strength before and after 8 weeks of normal swimming training. The exercise group received eccentric ankle strengthening exercises with an elastic band, in addition to their regular swimming training. Participants completed 24 exercises over 8 weeks, with 3 non-consecutive training sessions per week. Dynamic (2 minutes) and static stretching (2 minutes) exercises were performed as before the training session.

Eligibility

Sex/Gender
ALL
Age
84 Months to 155 Months
Healthy volunteers
Yes

Inclusion criteria

* Having swimming training at least three times per week for the last year and using the proper UDK technique, which was assessed by the swimming trainer of the participants.

Exclusion criteria

* having any lower extremity injury or low back pain.

Design outcomes

Primary

MeasureTime frameDescription
Underwater swim performance.change in 5-meter underwater dolphin kick time in 8 weeks]5-meter underwater dolphin kick time measurement by using a chronometer.
Muscle Strengthchange in ankle muscle strength in 8 weeks]Ankle muscle strength measurement (dorsal flexors, plantar flexors, internal rotators, external rotators) by using manual dynamometer.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026