Clinical trial NCT05393687: Eccentric Strength Training of Ankle Joint Muscles in Swimming
Official title: The Effect of Ankle Muscle Strengthening on Underwater Dolphin Kick Performance in Young Swimmers
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Resistance Training
Keywords: swimming
resistance training
youth sports
elastic band
ankle
Lead sponsor: Istinye University
Sponsor class: OTHER
First posted: 2022-05-26
Enrollment: 26
Sex: ALL
Minimum age (years): 84
Maximum age (years): 155
Standard ages: CHILD
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
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.
Primary purpose: OTHER

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.

Eligibility criteria: 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.

Primary outcomes:
measure: Underwater swim performance.
timeFrame: change in 5-meter underwater dolphin kick time in 8 weeks]
measure: Muscle Strength
timeFrame: change in ankle muscle strength in 8 weeks]
Secondary outcomes:
Other outcomes:
Locations:
city: Şi̇şli̇
country: Turkey
facility: Habibe Serap İnal
state: İstanbul
city: Istanbul
country: Turkey
facility: Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Istinye University
Study officials:
affiliation: Istinye University
name: Habibe Serap İnal
role: STUDY_DIRECTOR
References:
citation: Willems TM, Cornelis JA, De Deurwaerder LE, Roelandt F, De Mits S. The effect of ankle muscle strength and flexibility on dolphin kick performance in competitive swimmers. Hum Mov Sci. 2014 Aug;36:167-76. doi: 10.1016/j.humov.2014.05.004. Epub 2014 Jun 28.
citation: von Loebbecke A, Mittal R, Fish F, Mark R. A comparison of the kinematics of the dolphin kick in humans and cetaceans. Hum Mov Sci. 2009 Feb;28(1):99-112. doi: 10.1016/j.humov.2008.07.005. Epub 2008 Nov 4.
citation: Connaboy C, Naemi R, Brown S, Psycharakis S, McCabe C, Coleman S, Sanders R. The key kinematic determinants of undulatory underwater swimming at maximal velocity. J Sports Sci. 2016;34(11):1036-43. doi: 10.1080/02640414.2015.1088162. Epub 2015 Sep 14.