•Dance can promote emotional, cognitive, physical, and social interactions.•Dance intervention may require long learning periods and impose high joint loading.•A lumbo-pelvic coordination exercise ...involved pelvic tilt and rotation and breathing.•The proposed exercise can reduce TC and LDL-C and improve VO2max and HDL-C.
Dance interventions require long learning periods and exert high joint loading. Therefore, a simple dance intervention is required.
To examine the effects of simplified dance on body composition, cardiorespiratory fitness, and blood lipid levels in obese older women.
Twenty-six obese older women were randomly assigned to exercise and control groups. The dance exercise involved pelvic tilt and rotation with basic breathing techniques. Anthropometry, cardiorespiratory fitness, and blood lipid levels were measured at baseline and after the 12-week training.
The exercise group had lower total cholesterol and low-density lipoprotein cholesterol levels and improved VO2max after the 12-week training than at baseline; however, no significant difference was observed for the control group. Additionally, the exercise group had lower triglycerides and higher high-density lipoprotein cholesterol than the control group.
Simplified dance interventions have the potential to improve blood composition and aerobic fitness in obese older women.
A potential myocardial injury can be induced by intensive sporting activities, which may be due to ventricular tachycardia or fibrillation when individuals continue to exercise during the maximum ...physical loading period (the aerobic capability plateau, ACP). Herein, we conducted an incremental exercise test with the RR-interval and SV-series measurements as the input and output of the circulatory system. Through time and frequency analyses, we aimed to identify the indicators for distinguishing the normal stage (S1), last stage before ACP (S2), and ACP stage (S3) during different incremental physical loads. The cross-correlation results of the RR interval and SV series showed that the maximum coefficient of S2 was significantly greater (p < 0.05) than that of S1 (median 0.91 to 0.87), and also significantly lower (p < 0.05) than that of S3 (median 0.87 to 0.60). The corresponding spectrum shows that the decreasing correlation coefficient of SVV and Heart rate variability can be used to assess whether the body has reached the ACP. These findings can be used as a guide for exercise healthcare. Pausing or reducing the exercise load before entering the ACP could effectively reduce the risk of myocardial injury.
The evaluation of physical activity is a complex task that requires performing an analysis of muscular activity and aerobic/anaerobic threshold and it is often difficult to observe and propose a ...single method. The purpose of the article is to evaluate a relation between aerobic capacity and activity of lower limb muscles via changes of muscle's EMG signal during physical, sub-maximal veloergometric loading. The activity parameters of 5 lower limb muscles such as semitendinosus, rectus femoris, biceps femoris, gastrocnemius medialis, and tibialis anterior were measured and analyzed during the veloergometric exercise tests and the heart rate and the aerobic capacity were estimated from registered data. The obtained aerobic parameters allow setting an individual and overall voluntary physical capacity. The regression oxygen function presented allows analyzing and predicting the ability of subjects to generate energy while maintaining muscle activity during the exercise. The correlation between the consumption of oxygen and constant physical loading time is determined. It was found that comparing VO2max capabilities the physical effort in the male group was 16% higher than in women. Oxygen consumption and maximum muscle effort dependency on the load time was established. It was observed that the maximal muscular effort appeared before VO2max reached maximal limit in both groups. The maximal oxygen consumption is achieved in the middle or sometimes at the beginning (depending on load) of exercise while maximal muscular effort was found in several phases of cycling: at the beginning and at the end of loading time.
The study investigated the effect of a short-term (3-week) body mass reduction program, combining energy-restricted diet, nutritional education, psychological counselling and aerobic exercise ...training (DEP-AT) on maximal oxygen consumption (VO2max) and anaerobic alactic performance evaluated with different techniques in obese patients (grade II and III). Fifty-three (14 males, 39 females) obese subjects average +/- SD body mass index (BMI): 41.6 +/- 4.2 kg/m2 were tested before and after the DEP-AT program characterised by a daily conditioning protocol of aerobic exercise on cycloergometer, treadmill and armergometer for a total duration of 35 min at an intensity corresponding to 50% of individual VO2max during the first week of the program and at 60% in the following 2 weeks. VO2max was determined with the cycloergometric indirect method. Short-term alactic anaerobic performance was evaluated with: a) jumping test (5 consecutive jumps with maximal effort, Bosco technique), b) short sprint running test (8m), and c) stair climbing test (modified Margaria test). The DEP-AT program induced a significant weight loss (-4.57 +/- 1.26%, p < 0.001) and a significant VO2max increase (14.1 +/- 20.5%, p < 0.001). After the DEP-AT program, lower limb alactic anaerobic power output, calculated on a per kg body mass basis, increased significantly both in jumping and in stair climbing (20.1 +/- 24.8%, p < 0.001 and 13.5 +/- 19.75%, p < 0.001, respectively), as well as average horizontal velocity during short sprinting (7.2 +/- 17.6%, p < 0.01). Power output was a major determinant of the motor performance, being significantly correlated with: a) vertical displacement of the centre of gravity (R2 = 0.884, p < 0.001) in jumping test, b) vertical velocity (R2 = 0.348, p < 0.001) in stair climbing test, and c) horizontal velocity (R2 = 0.394, p < 0.001) in short running test. In conclusion, short-term DEP-AT program induces significant improvements in both aerobic capabilities and anaerobic performance, possibly through the combination of a number of contributory mechanisms, such as exercise-mediated training, shift in the balance between parasympathetic and sympathetic activity, a weight-loss dependent shift toward a more favourable region of the muscle power-velocity curve, acquisition of a certain degree of motor skill during the conditioning program, improvement of self-esteem and motivation.
Purpose
Maximal oxygen consumption (
V
O
2max
) and oxygen consumption at anaerobic threshold (
V
O
2AT
) are commonly measured parameters to test elite soccer players; however, studies relating ...metabolic parameters of professional soccer players with performance and best fitting to the field role are scarce. Our aim was to study the relations of
V
O
2max
and
V
O
2AT
with the field role of elite soccer players to generate a robust dataset with a solid statistical analysis.
Method
Over a 12-year period we performed 953 field evaluation tests of
V
O
2 max
and
V
O
2AT
on 450 elite soccer players of 13 professional teams by incremental, continuous and exhausting test modified from Conconi’s test. Statistical analysis was performed by one-way ANOVA followed—when appropriate—by Tukey post hoc test. Effect size was evaluated by the Cohen D test and η partial squared test. Statistical significance was set for
p
< 0.05.
Results
V
O
2max
mean values increased at the beginning of season by 1.073 ± 0.06 respect to pre-season then decreased again up to pre-season levels and remained stable, while
V
O
2AT
did not change during time.
V
O
2max
differences were also related to players’ field role.
V
O
2max
mean value for Goalkeeper was 50.85 ± 4.2, for central Defender was 57.58 ± 4.3, for Winger-sides back was 60.53 ± 5.02, for Midfielder was 59.53 ± 5.08, for Forward was 56.52 ± 4.14. On the contrary, as expected,
V
O
2AT
percentage variations among the roles were not significant.
Conclusions
V
O
2max
is the choice parameter to consider for the metabolic compliance of athletes to the field role requirements, consequently influencing training programs, recovery and injury prevention strategies.
Shows the fundamental importance of personality structure of aerobic capacity for the formation of the specialized focus of the training process in cyclic kinds sports in the development of special ...endurance. Within one specialization of homogeneous groups of athletes may have a place to respond to different types of loads that are important for the manifestation of the implementation of aerobic capacity and as a consequence of the development of special endurance. Presents important for special endurance individual differences realization of aerobic capacity athletes homogeneous group. Based on them can be tailored towards the means and direction of the so-called realizable trainings.
