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El consumo de oxígeno y la frecuencia cardiaca se midieron cada 20 segundos; las mediciones de la [Lac] y del Define correlation class 11 se efectuaron cada 5 y 50 segundos. La normalidad fue evaluada mediante el empleo del test Shapiro-Wilk. Los datos se analizaron mediante el coeficiente de correlación de Pearson. Se define correlation class 11 una correlación entre FC y la [Lac] en cinco de las seis etapas de ejercicios en las que se dividió la parte principal de la sesión de clase.
The study included fifteen young women yrs. VO 2 showed a significant correlation with HR and [Lac] throughout the class. When considering the main body of the workout, in which groups of movements were divided into six stages, HR and [Lac] were correlated at five of the stages. HR and [Lac] are alternative measures because they are easily determined, in addition to being the most reliable parameters for prescribing and define correlation class 11 the intensity in water exercise classes in young women.
Water exercise has become a method for improving physical condition in both healthy elderly women 1 and female college students 2. However, the way that different water exercises and their intensities are related to the effective improvement of physical fitness is still unclear. Oxygen consumption VO 2 and blood lactate concentration [Lac] are reliable measures for analyzing exercise intensity 3. However, it is unfeasible to measure VO 2 and [Lac] variables during a daily exercise routine 4.
Heart rate HR and the rate of perceived exertion RPE are alternative measures because they are easily obtained and seem to maintain a relationship to VO 2 and [Lac] in cyclic exercises walking and runningon land 4 and in the water 5. However, studies considering isolated water exercise define correlation class 11 showed that HR was positively correlated with VO 2 in only one from a total of eight different movements and that there were no correlations between RPE, HR and VO 2 variables 6 ; there was a positive and significant correlation only between VO 2 and [Lac].
Studies have shown different results regarding the responses of HR and VO 2but they have not verified the correlations between these variables. Generally, a regular WEC for physical conditioning is acyclic, composed of different movements performed at different intensities and in different sequences. Since studies analyzing the relationship between exercise intensity variables in a WEC were not found in the literature, the relationship between HR, VO 2[Lac] and RPE variables is still not clear in this context.
Healthy female university students, who volunteered and gave written informed consent, were selected to participate in the study. The inclusion criteria were; aged from 18 to 29 years, not taking any medications, and having participated regularly in WEC for at least six months. A body composition assessment was performed during the postmenstrual phase days. Skinfolds midaxillar, suprailiac, thigh and calf were assessed using a caliper Cescorf TM ; body height was measured using a calibrated wooden stadiometer, and body mass was measured using a calibrated balance-beam scale Welmy according to the anthropometric standardization manual Resting metabolic and cardiovascular measurements were taken in a seated position after resting for 10 minutes.
The WEC took place in a laboratory tank 1. The protocol was defined taking into what is a good correlation r value that physiological variables HR, VO 2 and [Lac] reach a steady state after seconds of sub-maximal exercise Every seconds a different muscle group was employed, avoiding focusing on any single muscle.
The WEC consisted of 5 minutes of stretching deltoid, pectoralis, latissimus dorsi, quadriceps and calf and warm-up cervical, shoulders, elbow, fist and hip ; 35 minutes of aerobic workout 30 exercises in 6 stages resulting from different ULM and LLM combinations ; and 5 minutes cool-down and stretching deltoid, biceps, triceps, pectorals, dorsal, latissimis dorsi, quadriceps, hamstrings and calf. The WEC intensities were organized in such a way that they approximated the pyramid method adapted for the aquatic environment 2.
The exercise intensities increased progressively from stages 1 to 4, and then the intensity decreased in stages 5 and define mathematical relationship. Define correlation class 11 the 45 minutes of exercises, blood samples for lactate analyses were collected at the end of every stage every secondsand VO 2 and HR were obtained every 20 seconds.
Mean values of VO 2 and HR from the last seconds in each stage were utilized in the analysis. Every 30 seconds before the end of the six stages, whats the opposite word of dominant participant indicated their RPE using the Borg Scale All data were analyzed using SPSS version Normality of data was confirmed using the Shapiro-Wilk test.
The Spearman correlation was used to investigate the correlation between the physiological variables and RPE. The significance level was set at 0. Statistical correlation results between physiological and intensity variables measured at rest and during the six stages of the water exercise class are shown in table 2. As expected with the use of the pyramid method 2,15mean measures of physiological and intensity variables indicated that the intensity of the water exercise class increased progressively from stage 1 to 4, and then the intensity decreased during stages 5 and 6.
It should be highlighted that the pyramid method is often used for improving physical fitness Regarding the correlation results, the present study indicated that HR x VO 2and [Lac] x VO 2 were positively and significantly correlated at all stages, as well as HR x [Lac], but the latter was not statistically significant at stage 2. The relationship between HR and VO 2 is already well established in land-based 4 and cyclic water exercises 5. However, such define correlation class 11 relationship seems not to be found in water exercise studies that considered only individualized exercises.
Kruel et al. In the study by Olkoski et al. However, the resistance force created by a moving body takes into account the density of the fluid in which the movement is being performed, the projected area and the speed at which it is performed. The decreased hydrostatic weight in water is compensated for by the higher density define correlation class 11 the water compared to the air, resulting in increased HR values and explaining the correlation between HR and VO 2 20 in water exercise classes.
The present define correlation class 11 showed that the HR x [Lac] correlation was significant in most stages of the class. The lack of statistical significance for HR x [Lac] correlation at stage 2 minutes can be explained by the expected [Lac] equilibrium after the 5 th minute of aerobic exercise 4. In contrast, Kruel et al. Regarding the HR x RPE correlation, the present study showed no significant correlation at any stage.
A study using exercises performed on land showed that RPE is an alternative way to control the physical exercise effort intensity It would be of great benefit if HR and RPE could be used to determine the intensity of water exercises on a regular basis. However, studies performed in the aquatic environment are controversial and there may not be enough information to reach a conclusion on the relationship between HR and RPE in water exercises Some studies have found correlations between HR and RPE in aquatic tread-mill walking 5,22 and swimming23 but others did not find a correlation between these variables using eight water exercises at 60 bpm in post-menopausal women 6and comparing swimming with cicloergometry The exercises performed during these stages required larger muscle groups and projected areas that resulted in an increased effort intensity These high-intensity exercises may have led subjects to a better perception of the physiological workload.
The lack of significant correlation in the less intense workload stages might be explained by some characteristics of the aquatic environment. These differences, together with the increased buoyancy of the water, might mislead the perception of intensity, and subjects might be able to identify the effort only in situations of greater stress imposed by the exercise distinction.
In a daily routine, HR seems dominant follicle meaning in malayalam be the best parameter to determine and control the effort intensity in WEC. Furthermore, if [Lac] can be obtained, it has been shown as an efficient measure.
Therefore, we suggest that water exercise instructors take into account HR and [Lac] when programming classes. Further studies are needed to verify the correlation between RPE and direct measurement of exercise intensities since this study found RPE correlated to VO 2 and [Lac] only at the higher intensity stages. History of the article: Received March 6, Accepted April 21, Correspondence: M.
Micheline Olkoski. CEP Jardim Define correlation class 11. E-mail: mabelolkoski hotmail. Inicio Revista Andaluza de Medicina del Deporte Correlation between physiological variables and rate of perceived exertion durin ISSN: Artículo anterior Artículo siguiente. Exportar referencia. Correlation between physiological variables and rate of perceived exertion during a water exercises classes. Descargar PDF.
Olkoski aS. Matheus aE. Tusset aL. Nogueira a. Este artículo ha recibido. Información del artículo. Define correlation class 11 1. Mean and standard error SE of physiological and intensity variables at rest and each stage of the water exercise class. Table 2. Los datos se analizaron mediante el coeficiente de correlación de Pearson. Se registró una correlación entre FC y la [Lac] en cinco de las seis etapas de ejercicios en las que se dividió la parte principal de la sesión de clase.
Palabras clave:. When considering the main body of the workout, in which groups of movements were divided into six stages, HR and [Lac] were correlated at five of the stages. HR and [Lac] are alternative measures because they are easily determined, in addition to being the most reliable parameters for prescribing and controlling the intensity in water exercise classes in young women.
Texto completo. Procedures A body composition assessment was performed during the postmenstrual phase days.
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