Swimming Technique Research Articles

The Impact of a Swimming Training Season on Anthropometrics, Maturation, and Kinematics in 12-Year-Old and Under Age-Group Swimmers: A Network Analysis.

Understanding fluctuations and associations between swimming performance-related variables provide strategic insights into a swimmer's preparation program. Through network analysis, we verified the relationships between anthropometrics, maturation, and kinematics changes (Δ) in 25-m breaststroke (BREAST) and butterfly (FLY) swimming performance, before and after a 47-week swimming training season. Twenty age-group swimmers (n =11 girls: 10.0 ± 1.3 years and n = 9 boys: 10.5 ± 0.9 years) performed a 25-m all-out swim test (T25) in BREAST and FLY techniques, before and after 47 weeks. Three measures of centrality, transformed into a z-score, were generated: betweenness, closeness, and strength. Data were compared (t-test) and effect sizes were identified with Hedges' g. Large effect sizes were observed for swimming performance improvements in BREAST (32.0 ± 7.5 to 24.5 ± 3.8 s; g = 1.26; Δ = −21.9 %) and FLY (30.3 ± 7.0 to 21.8 ± 3.6 s; g = 1.52; Δ = −26.5 %). Small to moderate effect sizes were observed for anthropometric changes. Moderate effect size was observed for maturity offset changes (−2.0 ± 0.9 to −1.3 ± 1.0; g = 0.73; Δ = 50.9 ± 281 %). Changes in maturity offset, stroke rate (SR), and stroke length for both BREAST and FLY swimming speeds were highlighted by the weight matrix. For betweenness, closeness, and strength, changes in arm span (AS) (BREAST) and stroke length (FLY) were remarkable. The dynamic process of athletic development and the perception of complexity of fluctuations and associations between performance-related variables were underpinned, particularly for simultaneous swimming techniques in age-group swimmers.

An Analysis Of Freestyle Swimming Technique on Students the Physical Education, Health And Leisure Study Program

The purpose of the study. The purpose of this study is to describe the technique of freestyle swimming in terms of: body position, hand movements, foot movements, breath taking movements and movement coordination. Materials and methods. Determine the level of mastery of the freestyle swimming technique in the students of the Physical Education Study Program at the Universitas Pahlawan who attend basic swimming lectures. Is it classified as very good, good, less or less. This research is descriptive, the population of this research is 20 students. Results. the level of mastery of technique on the body position indicator is 66% and the error rate is 34%, then the hand rotation indicator is 66 % and the error rate is 34%, then the foot movement indicator (Kicking) is 70% and the error rate is 30%. Furthermore, the level of mastery of techniques in breathing (breating) is 68.5% and the error rate is 30%, then the level of mastery of techniques in coordination is 68.5% and the error rate is 31.5%. Conclusions. Concluded that the level of mastery of technique on each indicator of the freestyle swimming technique

Swimmer Assessment Model (SWAM): Expert System Supporting Sport Potential Measurement

A swimmer’s potential can be exploited to the full if an individual approach is applied to training early enough. In the initial stage of a competitor’s career, it is hard to say whether the person will reach the world level. It is influenced by factors related to physical and mental characteristics, swimming technique, or the current skills level of the athlete. Some of them cannot be improved by swimmers; however, a few of these factors can be affected and upgraded by working on them. The data from 30 swimmers were collected in the research. Then, adopting the COMET method, the values of attributes characteristic for the athletes were entered into the proposed model to determine the predispositions of each of them. The applied method proved to be effective in assessing the parameters of competitors, and at the same time, it is a modern approach free of the rank reversal phenomenon. In addition, the model obtained allows for the study of input data to check how the change of a given criterion will affect the overall rating. The model developed is forward-looking. The results are satisfactory but can be improved to analyze somatic traits better and achieve more accurate predictions.

Portable and Feasible Device to Evaluate the Technique of Swimming Practitioners

Based on people’s enthusiasm for swimming and their pursuit of swimming skill at a higher level, this paper proposes a non-contact motion guidance system based on optical motion capture technology, which aims to improve their swimming technique conveniently, scientifically and quickly. The swimming actions can be captured using one smartphone underwater, and the app on the phone will process the video and give suggestions based on the reference postures derived from statistics of professional swimmers for improvement of the swimming performance. In this system, the Canny operator was applied to detect the edge of the image captured from the swimming video, and the Hough line was implemented to recognize and locate the key position information which refers to the angle between knee and hip joints, and the angle between the trunk and horizontal plane. Furthermore, by comparing the key position information with the data of standard swimming, improvement measures can be given to improve the swimming skills of swimmers. As the result of the experiments, the system can accurately capture the swimmer’s movement state, locate the incorrect posture of the swimmer, and provide the corrective information in real-time. Although the paper only took breaststroke as an example, the proposed method can be extended to the other swimming styles.

SIFAT-SIFAT MATRIKS LUNAK FUZZY INTUISIONISTIK

Fuzzy soft sets is one of the mathematical tools that are used to deal with the problem of uncertainty, such as problems in the field of economic, health, and others. The concept of fuzzy soft sets is extended into intuitiononistic fuzzy soft sets to intuitiononistic fuzzy soft matrices. This article examines the intuitionistic fuzzy soft matrix and defines the various types and operations of the intuitionistic fuzzy soft matrix. In addition, the application of an intuitionistic fuzzy soft matrix is ​​given to decision-making problems such as the selection of swimming athletes who have the best swimming techniques.

Swimming Phase-Based Performance Evaluation Using a Single IMU in Main Swimming Techniques.

Comprehensive monitoring of performance is essential for swimmers and swimming coaches to optimize the training. Regardless of the swimming technique, the swimmer passes various swimming phases from wall to wall, including a dive into the water or wall push-off, then glide and strokes preparation and finally, swimming up to the turn. The coach focuses on improving the performance of the swimmer in each of these phases. The purpose of this study was to assess the potential of using a sacrum-worn inertial measurement unit (IMU) for performance evaluation in each swimming phase (wall push-off, glide, stroke preparation and swimming) of elite swimmers in four main swimming techniques (i.e. front crawl, breaststroke, butterfly and backstroke). Nineteen swimmers were asked to wear a sacrum IMU and swim four one-way 25 m trials in each technique, attached to a tethered speedometer and filmed by cameras in the whole lap as reference systems. Based on the literature, several goal metrics were extracted from the instantaneous velocity (e.g. average velocity per stroke cycle) and displacement (e.g. time to reach 15 m from the wall) data from a tethered speedometer for the swimming phases, each one representing the goodness of swimmer’s performance. Following a novel approach, that starts from swimming bout detection and continues until detecting the swimming phases, the IMU kinematic variables in each swimming phase were extracted. The highly associated variables with the corresponding goal metrics were detected by LASSO (least absolute shrinkage and selection operator) variable selection and used for estimating the goal metrics with a linear regression model. The selected kinematic variables were relevant to the motion characteristics of each phase (e.g. selection of propulsion-related variables in wall push-off phase), providing more interpretability to the model. The estimation reached a determination coefficient (R2) value more than 0.75 and a relative RMSE less than 10% for most goal metrics in all swimming techniques. The results show that a single sacrum IMU can provide a wide range of performance-related swimming kinematic variables, useful for performance evaluation in four main swimming techniques.

Basic Swimming Style Crawl Engineering Skills Survey in Athletes Ages 10-12

This study aims to: 1.To know the basic technique skills of crawl style swimming in the Kebumen swimming club association students. 2. Knowing the factors of difficulty experienced by students in learning the basic motion skills of crawl style swimming 3. Students are able to apply the basic movements of swimming with the right steps. This research was conducted on the students of the Kebumen swimming club association in Gossi Kebumen. The research plan is carried out in November 2021. The sample referred to in this study is 20 students in the 10-12 year age group who take part in basic swimming skills training. Descriptive data analysis was entered to get an overview of the data including the average, standard deviation, maximum data, minimum data, range, frequency table and graphs. Based on the results of the research that has been carried out, it can be concluded: 1. Freestyle swimming skills measured using a stopwatch on students aged 10-12 years at the swimming club association in Kebumen showed that 50% of students had very poor swimming skills, 25% students have poor swimming skills and 25% of students have sufficient skills. 2. The category of skills that dominates the most in students is very low ability. Contributing to further research is to conduct research on more intense exercises on crawl swimming style techniques need to be done by athletes and also strategies to improve the ability of athletes in crawl style swimming.Keywords: Swimming, Crawl Style, Basic Swimming Technique

Analisis Teknik Renang Gaya Bebas pada Atlet Renang

This study aimed to describe freestyle swimming techniques in Athlete Noren Tirta Buana Musi Rawas. This research includes qualitative descriptive research types. Data collection in this study using Interview, Observation and Documentation techniques. The source of the data collected in the study is 1 Object which is a training ground in Noren Tirta Buana Musi Rawas. Data retrieval is carried out in the afternoon, after the data collected data is observed directly. The findings obtained by the researchers showed that freestyle swimming techniques are seen from aspects of body position, arm movement, leg movement, breathing movements, and coordination in Athlete Noren Tirta Buana Musi Rawas from 15 participants who took observation tests, interviews and documentation. In conclusion, the average freestyle swimming techniques athletes are in accordance with the theoretical study where there are 11 people who have done the movement correctly and 4 more people are still wrong in doing foot movements. 
 Keywords: Athlete Noren Tirta Buana Musi Rawa, Engineering Freestyle Swimming

The Effect of an Alternative Swimming Learning Program on Skills, Technique, Performance, and Salivary Cortisol Concentration at Primary School Ages Novice Swimmers

The playful training method shows positive effects on sports learning, thus the aim of the present study was to compare the effect of two different swimming learning programs. In an 8-week intervention with a training frequency of three times per week, 23 healthy primary school-aged novice swimmers (13 boys, 10 girls) aged 9.0 ± 0.9 participated. They were split into control (CG) and alternative (AG) groups and evaluated on skills (Start, Sink), backstroke (BK) and breaststroke (BR) technique, performance (Skills time, Kicks Time), and salivary cortisol concentration. According to the results, “Start” had a greater percentage of success in AG, at the first (CG = 9.1% vs. AG = 58.3%, p = 0.027) and third (CG = 63.6% vs. AG = 100%, p = 0.037) measurement. Additionally, greater scores were found in technique for AG in both BK (p = 0.009, η2 = 0.283) and BR (p = 0.020, η2 = 0.231). Salivary cortisol concentration was decreased for both groups (p < 0.001) and greater in CG at the second measurement (p < 0.001). The alternative swimming learning program was found to be more efficient or equally effective, compared with the standardized method in-water skills, swimming technique and performance, and in salivary cortisol concentration.

Metabolic Power, Active Drag, Mechanical and Propelling Efficiency of Elite Swimmers at 100 Meter Events in Different Competitive Swimming Techniques

Eight elite swimmers—four females and four males—were studied, each of whom specialized in different swimming techniques and ranked among the top 10 in the world in the 100 m event in their swimming specialty. Methods included a complex of physiological, biomechanical and hydrodynamic procedures, as well as mathematical modeling. During the special preparation period for the 2017 Swimming World Championship, all subjects performed an 8 × 100 m swimming step-test using their main swimming technique. The relationships between velocity, mechanical and metabolic power were obtained and analyzed for each swimming technique. It was found that, at the last stage of the test, in all swimming techniques, men demonstrated higher values of metabolic power (Pai = 3346–3560 W) and higher mechanical efficiency (eg = 0.062–0.068) than women (Pai = 2248–2575 W; eg = 0.049–0.052). As for propelling efficiency, women (ep = 0.67–0.71) and men (ep = 0.65–0.71) did not differ from each other. Results showed that the frontal component of active drag force is the main reason for the existing differences in maximal swimming velocity between different techniques, since no relevant differences were observed for mechanical and propelling efficiencies among swimming techniques.

Effect of training using the technology of teaching basic competitive swimming techniques to children with cerebral palsy

Purpose: According to many scholars, sport is essential for social adaptation and integration of people with disabilities. Therefore, it is important to research innovative technologies for teaching competitive swimming technique to 8-10-year- old children with cerebral palsy. The aim of this study is to develop the technology of teaching competitive swimming techniques to children with cerebral palsy and to evaluate its effectiveness for mastering the front crawl swimming technique. Materials and methods: analysis of scientific literature, questionnaires (e-correspondence), pedagogical experiment, expert survey, determination of the coefficient of technique efficiency, statistical methods. A total of 15 qualified swimming coaches participated in this study. The experiment involved 29 children who were diagnosed with cerebral palsy. Results: the main means of technology implementation is the web-based information system SwimCP (Swimming with Cerebral Palsy), which promotes effective swimming teaching for children with cerebral palsy at the initial stage of sports training by selecting and recommending an approximate complex of exercises that take into account the peculiarities of motor disturbance in accordance with the specific form of cerebral palsy and the stage of motor activity training. Conclusion: using expert assessment and the coefficient of swimming technique efficiency determination, it is confirmed that the proposed technology of teaching basic competitive swimming techniques to children with cerebral palsy is effective.&#x0D; Resumen: Objetivo: Según muchos estudiosos destacados, el deporte es fundamental para la adaptación social y la integración de las personas con discapacidad. Por lo tanto, es importante investigar modelos innovadores para enseñar brazadas de natación competitiva a niños con parálisis cerebral. El objetivo del estudio es diseñar el modelo pedagógico de enseñanza de los estilos básicos de natación competitiva a niños con parálisis cerebral y evaluar su efectividad para dominar el estilo de natación estilo crol. Material y métodos: Se utilizó una metodología de investigación selectiva. Implicó la recopilación directa de datos gracias a la encuesta a los participantes. Los resultados mostraron que el nivel de dominio de la brazada de natación utilizado por los niños que aplicaron este modelo diseñado fue objetivamente mayor en comparación con los mismos indicadores de entrenamiento relacionados con el método tradicional. Conclusiones: Basándonos en la evaluación de la eficiencia de la brazada de natación, creemos que el modelo pedagógico propuesto de enseñar las brazadas básicas de natación competitiva a niños con parálisis cerebral es eficaz.

Teaching Mode of Sports Swimming Video in Colleges and Universities Based on Artificial Intelligence

After mankind entered the 20th century, a young science with a history of only 60 years, artificial intelligence technology, is affecting the world in its own unique way. Artificial intelligence technology is known as one of the three major scientific and technological achievements of this century. The applications of artificial intelligence technology include machine learning, expert systems, pattern recognition, natural language processing, artificial neural networks, and robots. Two classes (n = 42) were randomly selected in the experiment, namely, the experimental group and the control group. The control group adopts traditional methods of teacher explanation, demonstration, and practice. The experimental group uses a combination of feedback and traditional teaching methods to teach. The students in the experimental group and the control group are compared in the early and late stages of the swimming skills video. Finally, the characteristic parameters of swimming techniques are compared and analyzed. Experimental data showed that the average score of students in the experimental group was 32.38, and the average score of the control group was 28.43. The average technical evaluation score of the experimental group was 77.19, and the average technical evaluation score of the control group was 72.43. The experimental results show that the video feedback teaching method does play a certain role in improving students’ technical movements and proficiency and improves the quality of teaching.

General characteristics of training programs at different individual and motivational levels of the swimming training system for students of higher education institutions

Within the increasing of practical significance and efficiency of physical education, it is necessary to develop certain methodic thesis and programs of swimming training for students of higher education institutions and to carry out these experimental checks. Purpose: to provide a general description of training programs at different individual and motivational levels of the swimming training system for students of higher education institutions. Methods: theoretical analysis and generalization (it was clarified the degree of disclosure research issues in the scientific and methodological literature), study of documentary materials (it was founded requirements to the structure and content of student swimming training), system analysis (it was detected signs and characteristics of swimming system for students of higher education institutions). Results. Within the methodical part of the swimming training system, we have identified the possibility of using in the natural environment the educational process of physical education for students of four interconnected by type of sequential combination of training programs. This programs cover different levels of individual and motivational orientation of swimming lessons for students of higher education institutions and, accordingly, swimming preparedness. Considering, that the means and methods of swimming are widely known and thoroughly disclosed in the special literature, our attention we turned to setting tasks for individual classes of different, consistently combined programs at the individual and motivational levels of swimming training system students of higher education institutions. Conclusions. Within the implementation of the methodical component of the swimming training system for students of the higher education institutions, it have been identified four individual and motivational levels of classes. For each of these levels it was carried out a selection of goals, tasks, means and methods of training. For students at the first level, the characteristic difference is the presence of a significant fear of being in the water and the lack of ability to swim. For students at the second level - a low level of fear of being in the water and lack of ability to swim. For students at the third level - the presence of skills to stay afloat and swim in any way (original methods without the use of swimming techniques or a separate style of swimming). For students at the fourth level - the possession of swimming skills and the desire to engage and improve techniques in the future.

Spatial-temporal variables for swimming coaches: A comparison study between video and TritonWear sensor

The main aim of this study was to evaluate the validity and the reliability of a swimming sensor to assess swimming performance and spatial-temporal variables. Six international male open-water swimmers completed a protocol which consisted of two training sets: a 6×100m individual medley and a continuous 800 m set in freestyle. Swimmers were equipped with a wearable sensor, the TritonWear to collect automatically spatial-temporal variables: speed, lap time, stroke count (SC), stroke length (SL), stroke rate (SR), and stroke index (SI). Video recordings were added as a “gold-standard” and used to assess the validity and the reliability of the TritonWear sensor. The results show that the sensor provides accurate results in comparison with video recording measurements. A very high accuracy was observed for lap time with a mean absolute percentage error (MAPE) under 5% for each stroke (2.2, 3.2, 3.4, 4.1% for butterfly, backstroke, breaststroke and freestyle respectively) but high error ranges indicate a dependence on swimming technique. Stroke count accuracy was higher for symmetric strokes than for alternate strokes (MAPE: 0, 2.4, 7.1 &amp; 4.9% for butterfly, breaststroke, backstroke &amp; freestyle respectively). The other variables (SL, SR &amp; SI) derived from the SC and the lap time also show good accuracy in all strokes. The wearable sensor provides an accurate real time feedback of spatial-temporal variables in six international open-water swimmers during classical training sets (at low to moderate intensities), which could be a useful tool for coaches, allowing them to monitor training load with no effort.

Basic methodical provisions for swimming training of students higher education institutions

Analysis of data on swimming training and determination of system components allow to assert the need to do appropriate methodical support. Purpose: to generalize the content of the basic methodical provisions of swimming training for integration into the education system of students higher education institutions. Research methods: theoretical analysis and generalization, study of documentary materials, system analysis. Results. It is recommended to division of classes into the following types: training, training-game, game, individual training, control, mass bathing. This step is done for providing methodically correct swimming training. Significant experience in the implementation of swimming training tasks for different groups of population is defined by the availability of thorough information of educational and methodical nature. The issue of swimming training as an integral part of personal development has received considerable attention since the middle of the twentieth century. In the sequence of training, in addition of stages, it is necessary to provide the degree of assimilation educational material. In general, we can offer a scheme in the form of "new element - development - consolidation - control - a new element." In the educational process, it is recommended to form at students a sufficient arsenal of specific swimming actions. There was identified need to combine technical exercises into complexes defined by target installations. Changing the speed of movement, tempo-rhythmic execution of movements (in full coordination or different biolanks) are regulators for observance of methodical tasks. Conclusions. The generalization of scientific and methodical literature gives us reason to assert the existence of an extremely large number of information sources on swimming training for different groups of the population. In order to avoid duplication of fundamental approaches to swimming training and adhering to the paradigm of this process in the methodical component should focus on the content of successive tasks of different individual and motivational levels of the swimming training system for students. To swimming training of student youth and maintain content priorities, it is necessary to focus on achieving a certain level of skill in accordance with the goals of a certain individual and motivational level of classes. The basic prerequisites are the laying the broad technical base, which provides mastering and improvement different ways of swimming techniques and gradual increase of physical fitness and improvement of the physical qualities development.

Analysis of Motion Skills for Breaststroke Swimming Techniques

Based on the observations, the problem in the study was an error that occurred in the breaststroke swimming technique movement of the Mountain Swimming Club Swimming Club in Padang City. Where this is thought to be the cause of the low performance of athletes at the club. This study aims to determine the breaststroke swimming technique skills. The research design is descriptive. Where the research sample is all athletes of Gunung Swimming Club Padang City, amounting to 9 people with saturated sampling technique. To measure swimming technique skills, it is carried out using an observation sheet and is assessed by 3 judgments (assessors) who have expertise in the sport of swimming. The results of the study: (1) The level of mastery of the breaststroke swimming technique of the Padang City Swimming Club athletes is currently at a moderate level. Where the results of data analysis obtained a maximum score of 68 (very good), a minimum score of 40 (less), a standard deviation of 8 and an average score of 56 (moderate). (2) Out of 9 people: 1 person (11.1%) has very good mastery of the breaststroke swimming technique. 3 people (33.3%) have mastery of the breaststroke swimming technique in the good category. 4 people (44.5%) had mastery of the breaststroke technique in the moderate category. 1 person (11.1%) has mastery of the breaststroke swimming technique in the very poor category. Conclusion Currently, the level of mastery of the breaststroke swimming technique of the Padang City Swimming Club athletes is at a moderate level.

Features of using innovative technologies in swimming classes of students of higher education institutions

The article reveals the peculiarities of the use of innovative technologies in swimming lessons for students of higher education institutions. It is found that the development of a large number of swimming movements simultaneously by all methods of swimming first light, then sports and elements of applied swimming allows at the initial stage to choose the easiest way first and gradually move to complex. This reduces the duration of the entire period of development of swimming techniques. It is established that the use of innovative technologies in teaching swimming to students contributes to the formation of their need for a healthy lifestyle, increase their level of preparedness and functionality of the body.&#x0D; Analysis of swimming programs used in higher education institutions shows that classes are usually built according to the traditional method with the parallel development of two similar in structure methods of rabbit on the chest and rabbit on the back. At the same time, the peculiarities of sex and age, interests, motives and needs of students, as well as individual features and tendencies to master a certain type of motor activity are not sufficiently taken into account. The organization of swimming lessons with young students in the mode of training, taking into account the above features, can significantly affect the formation of their need for a healthy lifestyle, health and prevent further deterioration.

DETERMINASI TEKNIK RENANG GAYA PUNGGUNG SISWA

The problem in this study is that there are still many technical errors made by students when doing breaststroke swimming. This study aims to dnik etermine the level of breaststroke swimming technique among students of the UNP Faculty of Science and Technology Coaching Department. T his typepunggung of research is descriptive research. This research was conducted in December 2020 at the FIK UNP Swimming Pool Gor. The study population was all students majoring in coaching who took the deepening swimming course for the June - December 2020 semesters as many as 33 people. The sampling technique used in this study was purposive sampling technique, so the sample size of this study was 16 students. The instrumentation in this study used the breaststroke swimming technique assessment format. The data analysis technique in this study used descriptive statistical analysis techniques percentages. The result of the research is the level of mastery of breaststroke swimming technique skills (71.4%), belonging to the Good category, meaning that the average student has mastered the breaststroke swimming technique skills according to the proper rules.

Front crawl stroke in swimming: Phase durations and self-similarity

Human movements, such as walking and running, are able to generate rhythmic motor patterns, with the consequent appearance of hidden time-harmonic structures. Such harmonic structures are represented (at comfortable speed) by the occurrence of the golden ratio as ratio of durations of specific walking and running gait sub-phases. Preliminary experimental evidences suggest that front crawl swimming may behave, under this point of view, like walking and running. This paper aims to demonstrate that a mathematical connection between the golden ratio and the front crawl swimming stroke actually exists, at a pace that plays the role of the comfortable speed in walking and running. Generalized Fibonacci sequences are used to this purpose. They rely on the durations of aggregate phases of the front crawl swimming stroke with a clear physical meaning, while characterizing self-similarity of front crawl strokes in its simple nature and enhanced (stronger) variant. Experimental data on front crawl swimmers illustrate the theoretical derivations, suggesting that the pace playing the role of the comfortable speed in walking and running is the middle/long-distance one, while showing that the self-similarity level increases with the swimming technique and the enhanced self-similarity is associated with the performance of top-level swimmers.

A Novel Macro-Micro Approach for Swimming Analysis in Main Swimming Techniques Using IMU Sensors.

Inertial measurement units (IMU) are proven as efficient tools for swimming analysis by overcoming the limits of video-based systems application in aquatic environments. However, coaches still believe in the lack of a reliable and easy-to-use analysis system for swimming. To provide a broad view of swimmers' performance, this paper describes a new macro-micro analysis approach, comprehensive enough to cover a full training session, regardless of the swimming technique. Seventeen national level swimmers (5 females, 12 males, 19.6 ± 2.1 yrs) were equipped with six IMUs and asked to swim 4 × 50 m trials in each swimming technique (i.e., frontcrawl, breaststroke, butterfly, and backstroke) in a 25 m pool, in front of five 2-D cameras (four under water and one over water) for validation. The proposed approach detects swimming bouts, laps, and swimming technique in macro level and swimming phases in micro level on all sensor locations for comparison. Swimming phases are the phases swimmers pass from wall to wall (wall push-off, glide, strokes preparation, swimming, and turn) and micro analysis detects the beginning of each phase. For macro analysis, an overall accuracy range of 0.83–0.98, 0.80–1.00, and 0.83–0.99 were achieved, respectively, for swimming bouts detection, laps detection and swimming technique identification on selected sensor locations, the highest being achieved with sacrum. For micro analysis, we obtained the lowest error mean and standard deviation on sacrum for the beginning of wall-push off, glide and turn (−20 ± 89 ms, 4 ± 100 ms, 23 ± 97 ms, respectively), on shank for the beginning of strokes preparation (0 ± 88 ms) and on wrist for the beginning of swimming (−42 ± 72 ms). Comparing the swimming techniques, sacrum sensor achieves the smallest range of error mean and standard deviation during micro analysis. By using the same macro-micro approach across different swimming techniques, this study shows its efficiency to detect the main events and phases of a training session. Moreover, comparing the results of both macro and micro analyses, sacrum has achieved relatively higher amounts of accuracy and lower mean and standard deviation of error in all swimming techniques.