Systematic Massage on Swimming Athletes Performance

Athletes Clinical Trial

Official title:

Effects of Systematic Massage Application on Swimming Athletes Performance: a Randomized, Placebo-controlled Clinical Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03886376
• Other study ID #: 2018/09680-8
• Status: Completed
• Phase: N/A
• Start date: March 25, 2019
• Est. completion date: May 18, 2019

Study information

• Verified date: February 2021
• Source: São Paulo State University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Swimming is a sport that includes different styles and distances, which can expose the athlete to different stressors that can affect performance and generate conditions such as overtraining. This is due to the lack of integration of systematic recovery periods during training programs. A very used recuperative feature in swimming is massage. Recent studies have shown that the application of short duration is sufficient to obtain the desired effects and it is possible that its application systematized over a period of time may have greater effects on performance. The aims of this study were to evaluate the effects of deep and superficial massage on clinical, functional and performance issues; to identify its short-term effects on clinical and functional variables and to investigate the association between training load and the swimmer's perceptions.

Description:

The study was composed by a convenience sample of 19 male and female athletes aged between 12 and 20 years old who train regularly (six days a week) and are members of the Prudentina Athletic Sports Association (APEA) swimming team. The research project was accepted by the Research Ethics Committee of the Faculty of Science and Technology of the Paulista State University "Júlio de Mesquita Filho" - FCT / UNESP. A single-blinded crossover randomized controlled trial with 1:1:1 allocation. The sample was submitted to a balanced-block randomization, by sorting on Excel, with a balanced sex, age and competitive level ratio, to three sequences of interventions containing: (i) control, (ii) superficial massage and iii) deep massage. The study was conducted over a period of eight weeks, consisting of five sessions of resistance and swimming training. The option for intervention time point was based on a pilot study that yielded higher training loads on on Mondays, Tuesdays and Fridays and worse perceptions between both training stimuli (resistance and swimming). At the end of each training week, participants were subjected to a maximum test of 100-m front crawl sprint in a semi-olympic indoor pool (25 meters), then we performed a functional evaluation. Training load was monitored over the entire trial by the Session Rating of Perceived Exertion (sRPE) calculated by the product of the training duration and perception of effort. Effects of single massage on perceptive outcomes were analyzed by generalized estimating equations (GEE) with ordinal distribution and cumulative logit link function, using intervention group, training time-points and day of intervention as predictors in the model. The first category (nothing) was used as reference unless otherwise stated. Effects of repeated massage on proprioception was analyzed by GEE and remaining outcomes were analyzed by Generalized Linear Mixed Model, both with Gamma distribution and cumulative logit link function. Bonferroni adjustments were used for all significant main effect. Pearson's test was used to explore the correlation between training load and performance and interpreted as small (0.00-0.25), fair (0.26-0.50), moderate to good (0.51-0.75) and excellent (>0.75).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 19
• Est. completion date: May 18, 2019
• Est. primary completion date: May 18, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 12 Years to 20 Years

Eligibility

Inclusion Criteria:

• regular members of the Prudentina Association of Athletic Sports (APEA)

• between 12 and 20 years old

Exclusion Criteria:

• not attending the evaluation session

Related Conditions & MeSH terms

• Athletes

Intervention

Other:
• Deep Massage
The deep massage group received 12 minutes of massage on the legs, arms and the back with three different sliding pressures.
• Superficial Massage
The superficial massage group received 12 minutes of only one sliding pressure performed on the legs, arms and the back.

Locations

Country	Name	City	State
Brazil	Sao Paulo State University	Presidente Prudente	São Paulo

Sponsors (2)

Lead Sponsor	Collaborator
São Paulo State University	Fundação de Amparo à Pesquisa do Estado de São Paulo

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Adjusted Performance	Technical index (FINA points)	up to 1 week
Primary	Performance	Sprint time (s)	up to 1 week
Secondary	Inferior limb power	Squat jump test (cm)	up to 1 week
Secondary	Superior limb power	Bench press test (m/s)	up to 1 week
Secondary	Flexibility	Tested by hip flexion measured by the centimeters reached on the Wells bench	up to 1 week
Secondary	Proprioception	Laser-pointer assisted angle reproduction test for 55°, 90° and 125° of shoulder flexion	up to 1 week
Secondary	Perceptions	Swimmer's Perception of Effort Questionnaire (SPEQ) composed of 5 perceptions (well-being, heaviness, tiredness, discomfort, pain) rated by a 1-5 likert scale where 1=nothing; 2= a little; 3=moderate; 4=a lot; 5=extremely. For well-being higher values indicate better outcomes while for the remaining perceptions higher values indicate worse outcomes	up to 1 week
Secondary	Swimming velocity	Swimming velocity (SV) is derived from the central 10m of the pool and the time to swim this distance (t), calculated by the formula SV=10/t.	up to 1 week
Secondary	Stroke frequency	Stroke frequency (SF) is derived from the number os strokes (n) and the time to swim the central 10m of the pool (t), calculated by the formula SF=n/t.	up to 1 week
Secondary	Distance per stroke	Distance per stroke (DPS) is derived from the swimming velocity and swimming frequency, calculated by the formula DPS=SV/SF.	up to 1 week
Secondary	Stroke index	Stroke index (SI) is derived from the swimming velocity and the distance per stroke, calculate from the formula SI=SV*DPS.	up to 1 week