Effects of a Warm-Up Protocol on the General Motor Patterns of Young Tennis Paddle Players

Research Article

Austin Sports Med. 2020; 5(1): 1036.

Effects of a Warm-Up Protocol on the General Motor Patterns of Young Tennis Paddle Players

Hernández-García R¹*, Martínez D² and Torres-Luque G³

¹Department of Physical Activity and Sport, Faculty of Sports Sciences, University of Murcia, San Javier (Murcia), Spain

²Department of Sports Medicine, Qualis Motus Academy, Spain

³Department of Sports Medicine, University of Jaén, Spain

*Corresponding author: Hernández-García R, Department of Physical Activity and Sport, Faculty of Sports Sciences, University of Murcia, San Javier (Murcia), Spain

Received: May 29, 2020; Accepted: June 22, 2020; Published: June 29, 2020


Different authors express the importance of an adequate motor learning in the stages of sports initiation, for this it is necessary to develop adequately the general motor patterns.

Objective: to evaluate the 6-week effect of a warm-up protocol aimed at mobility and stability in a group of young paddle tennis players. The sample consists of 10 children, divided into two groups: Experimental Group (EG) (n=5) and Control Group (CG) (n=5). An initial assessment of the basic functionality was performed by means of a test; Overhead Squat Test (OHST), Hurdle Step Test (HST), Forward Step Down (FSD), Shoulder Mobility Test (SMT), Active Straight Leg Raise (ASLR) and the “L” drill test. A warm-up protocol was then developed for the EG for 6 weeks, two weekly sessions based on mobility and stability. The EG showed significant improvements (p <.05) in the execution of general motor patterns with a significant decrease in the number of compensations (p <.05) and also significantly reduced the time in the “L” probe test (p <.05). It appears that a movement and stability oriented warm-up may improve overall motor patterns in young athletes. However, it is recommended that more studies be conducted in this line to conclude with greater effect.

Keywords: Stability; Mobility; Paddle; Children


The development of Fundamental Motor Skills (FMS) should be considered a priority in sports programs [1], as FMS are considered essential building blocks for both the development of movement activities and the specialization of Specific Motor Skills (SMS) [2,3]. In sports initiation programs, coaches are aware of the importance of developing appropriate FMS, because if young athletes begin to develop efficient movement patterns they will be better prepared for more advanced training and skill mastery [4]. On the other hand, if they do not develop the right motor patterns, FMS and progressions in sports specialization, the worst result will be the injury [5]. To prevent this from happening, long-term athletic development experts recommend the work of the basic fundamentals of movement (mobility and stability), correct execution of general motor patterns [6-9], as well as using qualitative and quantitative evaluation techniques on the development of individual FMS [10]. General Motor Patterns (GMP) are the basis of human movement [11]. In other words, FMS are for the development of complex skills and are acquired during infancy in an innate way, as a result of the interaction of human beings and their environment. In addition, they can be modified and disturbed due to interaction with the environment and the proposed task [2].

Therefore, different authors reaffirm that the most important thing in early childhood is learning to move well [9,12] (i.e., the importance of children being skilled in basic movements). For this, it is necessary to work on the quality of movement. This concept consists of developing the coordination and functional movements necessary to lead an adequate life [13]. Starting from this statement and following different theories of the athlete’s long-term development [1,14] within the functional movement, in the stage of sport initiation recommend the progressive improvement of mobility and stability with the objective that young athletes can develop properly in later stages [15]. Lack of these components at an early age can lead to increased risk of injury in adults [8] and tissues can be excessively burdened with an increased risk of injury [16].

Paddle tennis is among the sports that are being practiced exponentially by young people. It is one of the most popular racket sports, with more than 4 million players in the world [17-19]. In addition, it is a sport that implements (where it has been shown in high level players) the most numerous attacking strokes, highlighting the service, the volley of right and backhand, and the auction [20]. In fact, participation in racquet sports can reduce reaction time [21].

The importance of the technical actions that are instilled from an early age leads to sessions in stages of formation that are very much aimed at the continuous repetition of actions, which can affect the development of FMS and that in the long run can lead to musculoskeletal injuries [22] given the lack of symmetry and the promotion of unilateralism [23]. However, there are no studies that contemplate the development of the paddle tennis players, from the base of optimal GMP and FMS, to establish adequate SMS. While there are proposals for other modalities, such as that of Mackey coach [24] for rugby teams that say without good body posture there is no quality of movement; no movement quality dissipates energy; without energy, there is no speed or strength (which conditions the technical gesture).

As for GMP, no studies have been found that analyse the effect of interventions focusing on young paddle players. Therefore, the objective of this study was to analyze the effects of a warm-up protocol aimed at developing mobility and stability for 6 weeks in adolescent paddle players on their GMP. The hypothesis underlying the present work is that the working group developing the warm-up protocol will improve their motor skills and speed of movement.

Materials and Methods

Experimental design

An experimental design was carried out, where the independent variable was the training program based on quality of movement; and the dependent variables were the level of their motor skills and speed of travel in the change of direction test. The intervention program was only carried out by the Experimental Group (EG), which consisted of developing a warm-up focused on mobility and stability of the athlete. The Control Group (CG) simply warmed up through running and games.


The sample consisted of 10 young paddle tennis players (8 boys and 2 girls), which were divided into 2 groups of 5 intentional players (according to the schedule of sessions). The CG (n=5) consisted of 4 boys and 1 girl (10±1.41 years; 1.62±0.89 years of practice; 1.47±0.05 m; 37.61 ± 4.03 kg), and the EG (n=5) consisted of 4 boys and 1 girl (11.60±1.51 years; 2.43±0.89 years of practice; 1.58±0.13 m; 45.22±7.15 kg) The inclusion criteria were no injury in the last year, paddle tennis practice for more than 1 year, and 2 paddle tennis sessions per week. Exclusion criteria included injury in the last year or during the intervention phase and missing sessions during the 8 weeks of the study.

Subjects and their parents were reunited one week prior to the study to be informed. All of them participated voluntarily and their parents signed the informed consent, which was reviewed and approved by the ethics committee of the local institution.


A scale, model PS1023 (Italy), was used for determination of body weight, and a wall height meter, Adults Soehnle (Germany), was used measurement of height. For the functional assessment, a GoPro Hero Session video camera (San Mateo, California) and an aerobic step 10 cm high was used. For the travel speed test (“L drill test”), cones and a stopwatch were used.

The intervention program

The intervention program for the EG lasted 6 weeks, with two sessions per week. They worked on mobility and stability-oriented warm-up of 15 minutes (30 minutes per week), which consisted of 4 phases:

Self-Myofascial Release (SMR) with one paddle ball per person, massaging the soles of the feet, inner rotating hip muscles, passing the ball in an ascending direction, outer rotating hip muscles, and in descending direction. The execution time is 30 seconds to 1 minute per body area.

Dynamic mobility, which was centered on the ankle, hip, thorax and shoulders.

Activation of the deep and superficial musculature of the trunk, gluteal musculature, and humeroscapular musculature; like, for example: glute bridge, dynamics dead bug and alphabet row exercises.

Neural activation through rapid response exercises

The numbers of series and repetitions to be carried out in the first week were one series of 6 repetitions. During the rest of the weeks, one series of 8 repetitions of each exercise was done. On the other hand, the CG warmed up during those 6 weeks for 15 minutes with a running in different directions and games with the ball and the shovel. The rest of the session 45 min, both the EG and CG carried out the same paddle training sessions (i.e., right kick, backhand, volleys, back wall, side wall, and backhand). The program was supervised by two certified coaches (Sports Science) with over 5 years of experience.

Data collection

Data were collected at two points in time: one week before 6 weeks of intervention and the following week after 6 weeks of intervention. Both groups performed the same procedure. All tests took place inside a paddle tennis court in the sports center where the intervention was carried out. The tests that make up the functional evaluation were carried out in accordance with the test proposal for a basic functional evaluation [25], with the objective of observing the quality of execution in different fundamental motor patterns. In this order: Overhead Squat Test (OHST), Hurdle Step Test (HST), Forward Step Down (FSD), Shoulder Mobility Test (SMT), and Active Straight Leg Raise (ASLR). The evaluator’s indications for the OHST realization were: separate your feet (bare feet) to shoulder width; raise your arms upwards, as if you want to touch the ceiling; when I say “ready, set, go”, slowly lower your butt to the floor. The evaluator’s indications for the HST were: go up one step (10-20 cm) and join the bare feet; cross your arms over your chest; when I say “ready, set, go”, raise the right knee as much as you can without falling and keep it up until I tell you. The evaluator’s indications for the FSD were: go up one step (10-20 cm) and join the bare feet together; cross your arms over your chest; when I say “ready, set, go”, wear your right heel as much as you can do down and forward without falling. For the SMT, the indications were: separate your arms and place your big toe inside the others; when I say “ready, set, go”, put your right arm over your head and your left arm underneath until both wrists meet in your back. And the indications for the ASLR were: lie on your back with legs outstretched, when I say “ready, set, go”, raise your right leg fully extended as much as you can. Of all the tests, 3 repetitions were made and video recorded from the frontal, sagittal and transverse planes. Afterwards, the videos were reviewed to extract the data. The points for correct execution and points for the number of compensations made from each test was extracted, following the study of Nessler [26]. The observation criteria for each test can be seen below.

OHST: eversion or inversion of the ankle, internal or external rotation of the foot, varosity or valgosity of th knee, pelvic rotation or tilt, asymmetric load distribution, loss of pelvic lumbar dissociation, lumbar hyperlordosis, dorsal kyphosis, and fall of the arms in front.

HST and FSD: eversion or inversion of the ankle, internal or external rotation of the support foot, valgus or varus of the knee support, internal or external rotation of the hip in the air, pelvic rotation or inclination, movement of the thorax, loss of lumbopelvic dissociation, excess lumbar lordosis and dorsal kyphosis.

SMT: winged shoulder blades, excess lordosis and cervical rectification.

ASLR: external or internal rotation of the immobile foot, knee flexion of the hip in flexion, loss of pelvic lumbar dissociation, lumbar flexion, extension or flexion of the thorax and cervical flexion or extension.

In this way, weak points or compensations of movement have been detected as great predictors of future injuries [16]. For this purpose, the % Global Injury Risk (GIR) was calculated based on the total compensation number (sum of the compensations for each test) Following the proposal of Hernández-García, et al., [25]:

% GIR = (nº compensations OHS + nº compensations HST + nº compensations FSD + nº compensations SMT + nº compensations ASLR) × 100 / 75

The number 75 corresponds to the maximum number of possible compensations.

For the “L drill test”, subjects performed 3 repetitions and scored the best runtime in seconds.

Data analysis

The SPSS statistical package version 21.0 for Windows was used. A descriptive analysis of the data shown as mean and standard deviation was performed. The Wilcoxon test was used to assess the effect of the intervention within the individual groups; and the Mann Whitney U test was used for comparison between groups at the pre-intervention and post-intervention stages and to compare the difference value between the two groups. Significance was stated at p < 0.05.


In Table 1, the effects of the motion quality training program on the basic functional assessment tests and the L cone drill test in the EG can be seen.