Systematic Massage on Swimming Athletes Performance

Not Applicable

Completed

• Conditions: Athletes
• Interventions: Other: Superficial Massage; Other: Deep Massage

• Registration Number: NCT03886376
• Lead Sponsor: São Paulo State University

Brief 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.

Detailed 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).

Study Timeline

• Study First Submitted: 2019-03-19
• Study First Submitted QC: 2019-03-20
• Study First Posted: 2019-03-22
• Study Start: 2019-03-25
• Primary Completion: 2019-05-18
• Study Completion: 2019-05-18
• Status Verified: 2021-02
• Last Update Submitted: 2021-02-19
• Last Update Posted: 2021-02-23

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 19

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Superficial Massage	Superficial Massage	The superficial massage was performed three times during a training week, after a physical training and before the swimming training
Deep Massage	Deep Massage	The deep massage was performed three times during a training week, after a physical training and before the swimming training

Primary Outcome Measures

Name	Time	Method
Performance	up to 1 week	Sprint time (s)
Adjusted Performance	up to 1 week	Technical index (FINA points)

Secondary Outcome Measures

Name	Time	Method
Flexibility	up to 1 week	Tested by hip flexion measured by the centimeters reached on the Wells bench
Stroke frequency	up to 1 week	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.
Inferior limb power	up to 1 week	Squat jump test (cm)
Proprioception	up to 1 week	Laser-pointer assisted angle reproduction test for 55°, 90° and 125° of shoulder flexion
Perceptions	up to 1 week	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
Swimming velocity	up to 1 week	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.
Distance per stroke	up to 1 week	Distance per stroke (DPS) is derived from the swimming velocity and swimming frequency, calculated by the formula DPS=SV/SF.
Stroke index	up to 1 week	Stroke index (SI) is derived from the swimming velocity and the distance per stroke, calculate from the formula SI=SV\*DPS.
Superior limb power	up to 1 week	Bench press test (m/s)

Trial Locations

Locations (1)

Sao Paulo State University; 🇧🇷 Presidente Prudente, São Paulo, Brazil