Wyniki wyszukiwania - Biblioteka Nauki

1

Diabetes Vs. Physical Exercise

100%

Raczyńska B. , Zubik Ł. , Jeliński M.

Polish Journal of Sport and Tourism

|

2011

|

tom 18

|

nr 1

3-9

EN

Diabetes is a disease affecting people of all races in the world, it can appear at any age. It is considered to be social disease due to the incidence and complications. It is a disease of complex etiology, classified as a metabolic disease with chronic hyperglycemia. It requires intensive hypoglicemizing therapy. There are two types of diabetes: type I and type II with different etiologies and varied clinical picture.In the case of prolonged illness serious complications develop, from which, however, the sick may be saved, on condition of the patient's absolute submission to the rigors of treatment. It is possible to live an active life and even practice sports. Extremely important in this case is the correct blood glucose, providing for adjusted glucose homeostasis, which is promoted by physical activity. Physical exercise can be an important therapeutic agent in treating diabetes, provided the criteria of its physiological tolerance are determined. It is vital that an individual approach to the patient is made, associated with the duration of the disease and existing complications. Patient education in monitoring patients' glucose levels is important, i.e. the efficiency in the implementation of individual insulin therapy and hyperglycemia or hypoglycemia self-prevention during and after physical exercise. Patients who decide to practice sport should find the optimal way to control exercise, and diet during and after exercise, then the sporting success is possible.

2

Association of hand grip strength with psychological stress, exercise habits and body composition amongst medical students: a cross-sectional study

100%

Barre S. , Inyingi L. , Orrego Castellanos J. , Patel A. , Ruckemann-Dziurdzinska K. A. , Bryl E. D. , Witkowski J. M.

European Journal of Translational and Clinical Medicine

|

2024

|

tom 7

|

nr 1

33-46

EN

Background The aim of this study was to assess the effectiveness of hand grip strength (HGS) test in identifying highly stressed individuals and to examine the effect of exercise and lifestyle on HGS and stress measures. Material and methods It is cross-sectional study. Students of the Medical University of Gdańsk, Poland were asked to fill out a questionnaire, undergo body composition analysis, perform HGS test and provide a saliva sample for cortisol measurement. Results Self-rated stress (SRS) was significantly higher in pre-clinical years (PCY) compared to clinical years (CY). HGS was significantly lower in PCY males than CY males. Participants who performed some form of exercise had significantly higher HGS compared with those who did not exercise. A positive correlation between HGS and BMI was noted. Students with low HGS were found to have lower levels of salivary cortisol (SC). However, there was no significant difference in SC levels between PCY and CY students. Conclusions HGS may be a reliable method of identifying stressed individuals and promoting healthy lifestyle behaviors. HGS testing is a safe, cheap and easy to perform method for a large number of participants while being time economical.

3

Understanding Exercise Intentions among Women Exercising in Fitness Classes: An Application of the Theory of Planned Behaviour

100%

Sas-Nowosielski K. , Nowicka M.

Central European Journal of Sport Sciences and Medicine

|

2018

|

tom 21

|

nr 1

41-47

EN

The study was aimed at examining the usefulness of the Theory of Planned Behaviour (TPB) in predicting exercise intentions and exercise of women in fitness classes. On the theoretical plane it broadens state of knowledge on the TPB, but the findings are also important for the development of more effective interventions to promote and maintain exercise engagement of women in fitness centers. The study was carried out in the second quarter of 2016 in two fitness centers in Katowice, Poland. The participants were 95 women aged 17–66 (M = 37.40 ±12.15). The obtained data were analyzed with the use of structural equation modelling (path analysis). Significant predictors of intention to exercise were perceived behavioural control and attitude, with the strongest effect observed in the former. The findings of the study suggest that interventions should focus on increasing the level of control over women’s exercise behaviours and shaping attitudes toward them.

4

Intervention Effect of Supportive Group Therapy and Physical Exercise on the Quality of Life of Cancer Patients

100%

Papastergiou D. , Kokaridas D. , Bonotis K. , Digelidis N. , Patsiaouras A.

Central European Journal of Sport Sciences and Medicine

|

2019

|

tom 25

|

nr 1

5-13

EN

Psychological distress is a multidimensional concern affecting patients’ ability to cope with cancer, its physical symptoms, and treatments. This study examined the effect of an exercise program and a group psychotherapy program on the quality of life of Greek cancer patients. The sample consisted of 39 cancer patients (10 males and 29 females), assigned randomly in three groups of 13 patients each group, that is, a control, an exercise and a psychotherapy group. The duration of the training program for the individuals of the exercise group was 10 weeks at a frequency of two sessions per week, 60 minutes each session. The patients of the psychotherapy group received a 10 weeks’ supportive–expressive group therapy, at a frequency of one time per week, of 90 minutes each meeting. The quality of life SF-36 questionnaire was administered to examine the short-term effect of both programs prior and after intervention on quality of life. Control group individuals did not participate in any program and they just filled in the SF-36 questionnaire prior and after intervention. Improvement in “vitality” (p = .006) and mental health subscale (p = .011) was statistically significant between pre and post measures in the supportive therapy group. All other domains exhibit no significant changes. In the exercise group, physical functioning, role functioning and emotional role values were also improved but not to the point to generate statistically significant results. The findings of the present study support the positive impact of psychotherapy intervention on vitality and mental health component of patients with cancer, followed in less extent by the beneficial effect of the exercise program.

5

Effects of Exercise on Risk-Taking

100%

Culpepper D. , Killion L.

Physical Activity Review

|

2017

|

tom 5

1-5

EN

Introduction: Research has shown that exercise increases levels of dopamine in cer tain sub - cortical brain regions. Increased dopamine activity in the brain has been linked to increased risk - taking. The purpose of this study was to determine if an increase in risk - taking is apparent in male athletes and non - athletes after strenuous exercise. Method: Ten athletes (age: 20.2±SD year) and ten non - athletes (age: 20.7±SD) in a university setting completed the BART (a validated protocol to asses risk - taking behavior) either after exercise or at r est. Result: Athletes obtained total 24.92 ± 10.99 pumps and Non - Athletes 42.76 ± 16.45 pumps . Discusion: AN C OVA’s showed that there was significant difference between athletes and non - athletes ( p< 0 .0 1) on the risk behavior test. Post hoc tests showed that for non - athletes there was also a significant difference for those that exercise immediately before the risk behavior test, p= 0 .003. This was not the case with athletes, p= 0 .683. Results indicate that while exercise increased risk - taking in the non - athlete subjects, it did not have an effect on the athlete population.

6

The Effect of Aerobic and Core Exercises on Forced Vital Capacity

100%

Çiçek G. , Güllü A. , Güllü E. , Yamaner F.

|

nr 1

41-47

7

Effects of L-Arginine Supplementation on Blood Pressure Reduction Pre-, Peri-, and Post-Cardiovascular Stimulus in Hypertensive Subjects with Different Angiotensin-Converting-Enzyme Genotypes

100%

Malfatti C. R. M. , Pavlak J. L. L. , da Silva L. A. , Medeiros T. E. , Alonso K. C. , Artoni R. F. , Nogaroto V. , Túrmina J. A. , Osiecki A. , Osiecki R.

Human Movement

|

2014

|

tom 15

|

nr 2

116-119

EN

Purpose. The present study investigated whether L-arginine supplementation reduces blood pressure (BP) in hypertensive subjects with different ACE genotypes. Methods. Eight male hypertensive patients received L-arginine (2 or 4 g/day) or a placebo for a period of 4 days prior an exercise test. Statistical analysis consisted of one-way analysis of variance. Results. L-arginine supplementation induced a statistically significant (p ⋋ 0.05) reduction in systolic BP measured during rest (reductions of 7.8% and 12.3% with 2 and 4 g/day, respectively), exercise (reductions of 11.8% and 10.4% with 2 and 4 g/day, respectively), and recovery (reductions of 11.7% and 10.7% with 2 and 4 g/day, respectively). The observed magnitude of BP reduction suggests an association with ACE polymorphism; a larger effect was seen with the II and DI genotypes compared with the DD genotype (II: 121 mmHg and DI: 133 mmHg vs. DD: 144 mmHg). Conclusions. The results showed that L-arginine supplementation at low doses was efficient in reducing BP and that vasodilator actions that occurred through the secretion of nitric oxide might be ACE genotype dependent.

8

Interleukin-6 As An Adipokine And Myokine: The Regulatory Role Of Cytokine In Adipose Tissue And Skeletal Muscle Metabolism

100%

Lutosławska G.

Human Movement

|

2012

|

tom 13

|

nr 4

372-379

EN

Purpose. Interleukin-6 (IL-6) belongs to the IL-6-type cytokine family, which, besides IL-6, comprises of IL-11, leukemia inhibitory factor (LIF), oncostatin M (OSM), ciliary neurotrophic factor (CNTF), cardiotrophin-1 (CT) and cardiotrophin-like cytokine (CLC). The metabolic effects of IL-6 differ markedly depending on the nature of the target cell with positive action on nerve cells’ differentiation and hematopoesis, but negative in the etiology of autoimmune disease such as rheumatoid arthritis. In a target cell, IL-6 can simultaneously generate functionally distinct or sometimes contradictory signals depending on the in vivo environment, and the final physiological effect is a consequence of the orchestration of the diverse signals. Thus, its physiological effects are characterized by pleiotropy and redundancy. At present, it has been well documented that in obese individuals, IL-6, as an adipokine secreted into circulation by adipose tissue in proportion to body fat content and an elevated level of the cytokine in the plasma, adversely affects insulin signaling and glucose disposal in skeletal muscles and liver. Moreover, several lines of evidence indicated that IL-6 is a myokine synthesized in skeletal muscle and secreted into the bloodstream in response to exercise. In this way muscular work has a potential to stimulate adipose tissue lipolysis and provides an energy to working muscle. Furthermore, muscle-originated IL-6 acts locally, positively affecting intramuscular fat utilization. It has also been postulated that IL-6 is inevitable for satellite cell stimulation and muscle hypertrophy and repair.

9

Transient electrocardiographic recording of acute myocardial ischemia with ST-segment elevation of the diaphragmal location accompanied by a total atrioventricular block as an initial manifestation of Prinzmetal’s angina - A case report

100%

Fuckar K. , Lakusic N. , Stipic H.

Open Medicine

|

2007

|

tom 2

|

nr 1

108-115

EN

Prinzmetal’s angina, also known as Prinzmetal’s variant or Prinzmetal’s vasospastic angina is characterized by angina attacks caused by spasm of the great epicardial coronary arteries. Coronary artery endothelial dysfunction plays a crucial role in the development of this vasospastic angina. The attacks of vasospastic angina can be prevented with calcium antagonists and nitrates, whereas in refractory variant angina, coronary angioplasty with stenting may help prevent further coronary spasm. In this case report, we present a 52-year-old male patient with a transient electrocardiographic recording of acute myocardial ischemia with ST-segment elevation of the diaphragmal location accompanied by a total atrioventricular block immediately after exercise testing and as a first manifestation of Prinzmetal’s angina. After regression of the symptoms and electrocardiographic changes, significant pathomorphologic changes of coronary arteries were excluded by coronary angiography. Following discharge, the patient was treated with calcium antagonists and did not show symptoms during a 4-year follow-up period.

10

EFFECTS OF MODERATE-INTENSITY RESISTANCE EXERCISE ON BLOOD PRESSURE IN HYPERTENSIVE INDIVIDUALS

100%

Ghobadi M. R. , Hoseini R. , Hoseini Z.

Central European Journal of Sport Sciences and Medicine

|

2016

|

tom 16

|

nr 4

5-12

EN

The purpose of this study was to evaluate the effects of moderate-intensity resistance exercise on postexercise hypotension (PEH) in the hypertensive. The study was conducted with eighteen hypertensive elderly individuals (20–30 years). They were subjected to two experimental sessions: control session (SC) and 50% (S50%) of 1RM. For each session, subjects were evaluated pre-and postintervention. In the preintervention, the blood pressure (BP) and FVR were measured after 10 min of rest. Thereafter, they were taken to the gym to perform the exercise sessions or remained at rest in each of the equipment during the same time.In the S50% group was composed of a set of ten repetitions of ten exercises, with an interval of 90 s between exercises. Subsequently,the FVR and BP measurements were again performed at 15, 30, 45, 60 and 75 min of recovery (postintervention). The PEH was greater in S50% compared with SC, with the lower value of BP being found at 75 min of recovery for the two sessions (systolic BP:125.21 ±0.98mmHg versus 145.45 ±1.72 mmHg; diastolic BP: 83.60 ±1.67 mmHg versus 95.14 ±0.74 mmHg respectively). Moderateintensity resistance exercise was effective in promoting PEH, this phenomenon being accompanied by a reduction in FVR within the first minute of recovery in the hypertensive young.

11

Relationship Between Break-Time Physical Activity, Age, and Sex in a Rural Primary Schools, Wales, UK

100%

Escalante Y. , Backx K. , Saavedra M.

Journal of Human Kinetics

|

2014

|

tom 40

|

nr 1

227-234

EN

The aim of this study was to examine the physical activity during the break-times of primary school children in rural areas, and its relationship with age and sex. 380 children (192 boys and 188 girls; age=9.5±1.1 years) participated in the study. Break-time physical activity in the morning and lunch breaks was measured by accelerometry. An ANOVA was used to determine differences by sex in each age group, together with the respective confidence intervals and effect sizes. The results showed that 8-year-olds performed more physical exercise than 11-year-olds during the two breaks (p=0.005). For the boys, the 8-year-olds did more physical activity than the 10-year-olds, while, for the girls, those aged 8 and 9 years did more PA than girls aged 11 years (p<0.001). The only difference between boys and girls was for the 10-year-olds (p=0.043), with the boys doing more physical activity. Teachers might find it useful to take these findings into account to design physical activity programmes aimed at increasing the playground physical activity of older children.

12

Inter-individual Variability in Soccer Players of Different Age Groups Playing Different Positions

100%

Nikolaidis P. , Ziv G. , Lidor R. , Arnon M.

Journal of Human Kinetics

|

2014

|

tom 40

|

nr 1

213-225

EN

The purpose of this study was twofold: (a) to profile physical characteristics and motor abilities of three age groups of soccer players - under 14 years, 14-17, and over 17, playing different positions - goalkeepers, defenders, midfielders, and forwards; and (b) to examine the inter-individual variability among the players in each age group in all physical and physiological measurements performed in the study. In addition, anthropometric, power, strength, and flexibility tests were administered. Findings showed large inter-individual variability in all three age groups and in all playing positions. Differences between playing positions were found only in the 14-17 group (body mass) and in the over-17 group (body height, body mass, fat-free mass, and mean power in the Wingate Anaerobic Test). Due to the observed large inter-individual variability, it was concluded that the findings obtained in the physical and physiological tests should be interpreted with caution when attempting to differentiate between successful and unsuccessful soccer players, as well as when trying to predict future success in soccer.

13

Demographic factors and physical activity of female undergraduates

100%

Buková A. , Zusková K. , Szerdiová L. , Küchelová Z.

Physical Activity Review

|

2017

|

tom 5

202-211

EN

Introduction:University years play an important role in building healthy lifestyle patterns and attitudes towards physical activity (PA) and sport. Regarding PA, female students are a riskier group than males. The environment can play an important role both as a barrier but also as support for PA. While researching PA in individual population groups, an ecological approach has to be taken into account. The aim of the research was to broaden knowledge about the underlying physical activity of female undergraduates in relation to selected demographic indicators, namely to urban and rural residence, its size in terms of population and the person's current place of residence during her studies. In monitoring PA, we focused on the frequency of sports activity, including exercise. Methods: The cohort of this cross-sectional study consisted of 1.630 female undergraduates from two universities in Eastern Slovakia. The research was carried out as part of the grant-aided VEGA Project No. 1/1343/12 "Selected risk factors of obesity and its prevention through physical activity" addressed by the Institute of Physical Education and Sport at P.J. Šafárik University (UPJŠ) in Košice. Data on frequency and regularity of doing sports, including exercise, during the previous half a year, the place of residence (city/country), population of residence, and the current place of residence during their studies were collected via a set of questions in a survey questionnaire designed for the purposes of the above research study. Data were processed using SPSS 23 software program. To find out the correlation between doing sport activities and selected demographic variables, the Spearman Chi quadrate test and the Cramer coefficient of association were used. Results: Female students of both universities demonstrated low levels of engagement with sport activity and exercise in terms of the frequency and regularity of its performance in a week over the previous half year. We found significant correlation between the frequency of the sports activity by the undergraduates and the place of their permanent residence, with a result favouring city dwellers against the countryside. Paradoxically, there is no significant correlation regarding the number of inhabitants at the place of residence, although we can observe a certain positive tendency in favor of agglomerations with a population of over 50,000. The factor of the current place of residence during university studies proved to be insignificant.

14

Effects of physical exercise on the motility of hands in patients operated because of Dupuytren's contracture in own material

100%

Deskur Z. , Deskur A. , Zawadzki M.

Central European Journal of Sport Sciences and Medicine

|

2014

|

tom 6

|

nr 2

77-83

EN

The purpose of this study was to evaluate the effect of physical exercise on limited locomotion in the hands of patients who underwent surgery to correct Dupuytren's contracture. We studied the hands of 84 patients with Dupuytren's contracture aged from 30 to 84 years. In all patients, the contracture was removed by performing a partial fasciectomy. Physical exercises were carried out a week prior to surgery and during the postoperative period. Patients were divided into group I, in which the exercise was carried out under the supervision of the authors of this study and group II, in which exercises were performed sporadically and without professional supervision. Measurements were performed on all patients one week before surgery (A), 1 week after surgery (B) and 6 weeks after (C). The range of movement of fingers was measured using a goniometer. The average total loss of finger extension was evaluated, taking due account of the extension loss in the MCP, PIP and DIP joints of all fingers of the treated hand. Rehabilitation treatment included active and passive exercises; in more severe cases the treatment of choice was massage and special equipment to help bear flexion contracture. Test results were statistically analyzed. In all patients, there was an increase in mobility of the fingers. Patients taking part in physical exercise had significantly greater range of finger movement.

15

Exercise or Relaxation? Which is More Effective in Improving the Emotional State of Pregnant Women?

100%

Guszkowska M. , Sempolska K. , Zaremba A. , Langwald M.

Human Movement

|

2013

|

tom 14

|

nr 2

168-174

EN

Purpose The aim of this study was to compare the changes in emotional states in pregnant women after completing a relaxation session and a one-off physical exercise class. Methods. The study included 139 pregnant women between the ages of 22 to 34 years (28.59 ± 2.99 years) in their second and third trimesters of pregnancy who were participating in one of three programs: a progressive relaxation course, a physical exercise program, or a traditional childbirth education program (control group). Emotional states were assessed by McNair, Lorr, and Droppleman’s Profile of Mood States immediately before (pre-test) attending their seventh respective class and then immediately after finishing it (post-test) Results. The pre-test emotional state of participants in all three groups was similar. Post-test, both the exercise and relaxation groups featured significantly improved emotional states, with the changes greater than those of women who attended the prenatal class. Pregnant women who participated in physical exercise were less troubled and tense and characterized by a higher level of vigor than the control group. Conclusions. Physical exercise may be especially helpful in coping with fatigue and feeling tired, while relaxation training is more beneficial for women with elevated levels of anxiety and depression.

16

Comparison of Accuracy of Various Non-Calorimetric Methods Measuring Energy Expenditure at Different Intensities

100%

Durkalec-Michalski K. , Woźniewicz M. , Bajerska J. , Jeszka J.

Human Movement

|

2013

|

tom 14

|

nr 2

161-167

EN

Purpose. The purpose of the study was to evaluate the accuracy of three non-calorimetric methods’ measurements of energy expenditure (EE) in laboratory conditions and to compare the results obtained by each method in free-living condition in a group of adult subjects. Methods. Measurement was performed on 20 individuals aged 19-39 years. An assessment of EE at different intensities of physical activity was conducted by: monitoring heart rate with a S-610 Polar Sport Tester (HRM), measuring body movement by an ActiGraph GT1M accelerometer (AM), and recording METs (MR) by a physical activity questionnaire, for different activities (leisure and exercise) at various intensities in laboratory and free-living conditions. Indirect calorimetry (Cosmed K4b2 respirometer) was used as a reference standard. Results. The most reliable tool for EE assessment was HRM (100% accurate). AM overestimated EE (about 60%) for activity at moderate-intensity and underestimated EE (about 40%) at vigorous-intensity. MR overestimated the results, with measurement errors increasing with an increase in physical activity intensity (about 40-120%). Conclusions. Although AM and MR provided less accurate results than HRM in laboratory conditions, there were no significant differences between the three methods (HRM, AM and MR) when total daily energy expenditure was calculated for the participants in free-living condition.

17

Evaluation of the relationship of the climbing level of sport climbers with selected anthropometric indicators and diet composition

100%

Przeliorz-Pyszczek A. , Gołąbek K. , Regulska-Ilow B.

Central European Journal of Sport Sciences and Medicine

|

2019

|

tom 28

|

nr 4

15-26

EN

Climbing is becoming more and more popular. During 2020 Olympic Games this discipline will be competed for the first time. Individualized diet plays a significant role among representatives of all sport disciplines. The aim of this research was to evaluate the correlation between the level of advancement of sport climbers, selected anthropometric indicators and diet composition. The study involved 36 women and 65 men practicing sport climbing who completed the food record and the survey on the most difficult climbing routes completed. Anthropometric measurements were collected. In the group of men statistically significant, positive correlation between the climbing level and the diet content of fiber, vitamin E, potassium, iron, zinc, and copper, was observed. In the group of women, a statistically significant positive correlation between the climbing level and the participation of vitamin C, potassium, magnesium and copper in the diet was observed. There was a positive correlation of protein, vitamin B2, B6, B12, D, phosphorus, magnesium, iron and copper content, and negative correlation between SFA content per 1,000 kcal of the diet and the climbing level of study participants. No statistical correlation was found between anthropometric parameters and advancement level.

18

VISUOMOTOR PROCESSING AFTER PROGRESSIVELY INCREASED PHYSICAL EXERCISE

100%

Zwierko T. , Lesiakowski P.

Central European Journal of Sport Sciences and Medicine

|

2014

|

tom 5

|

nr 1

27-34

EN

We assessed the effect of physical effort with increasing intensity on the visuomotor processing in physically active young men (n=22). Subjects performed three 10-minute effort-tests with increasing intensity on a cycloergometer. Each participant was assigned individual workload values below the lactate threshold (40% VO2max), at the lactate threshold (60% VO2max) and above the lactate threshold (80% VO2max). Special Ability Signal Test included in the Vienna Test System (Schuhfried, Austria) was used to examine visuomotor processing. The numbers of correct reactions and the median reaction time as a measure of the speed of the detection process were analyzed. Four Signal test recordings were taken: pre-exercise and immediately after the three subsequent effort tests. The numbers of correct reactions increased after the first effort (40% VO2max) in comparison to the pre-exercise state and then significantly decreased after the third effort test (80% VO2max). In contrast, no significant changes in time of signal detection were observed. Physical effort with high intensity might disturb the visuomotor processing in accordance to the accuracy of the visuospatial differentiation of the relevant signal within irrelevant signals.

19

THE GSTP1 c.313A>G POLYMORPHISM MODULATES THE CARDIORESPIRATORY RESPONSE TO AEROBIC TRAINING

100%

Zarebska A. , Jastrzebski Z. , Kaczmarczyk M. , Ficek K. , Maciejewska-Karlowska A. , Sawczuk M. , Leońska-Duniec A. , Krol P. , Cieszczyk P. , Zmijewski P. , Eynon N.

Biology of Sport

|

2014

|

tom 31

|

nr 4

261-266

EN

TThe GSTP1 c.313A>G polymorphism is a candidate to explain some of the individual differences in cardiorespiratory fitness phenotypes’ responses to aerobic exercise training. We aim to explore the association between the GSTP1 c.313A>G polymorphism and the response to low-high impact aerobic exercise training. Sixty-six Polish Caucasian women were genotyped for the GSTP1 c.313A>G polymorphism; 62 of them completed 12-week aerobic (50-75% HR max ) exercise training and were measured for selected somatic features (body mass and BMI) and cardiorespiratory fitness indices – maximal oxygen uptake (VO 2max , maximum heart rate (HR max ), maximum ventilation (V E max ) and anaerobic threshold (AT) – before and after the training period. Two-factor analysis of variance revealed a main training effect for body mass reduction (p=0.007) and BMI reduction (p=0.013), improvements of absolute and relative VO 2max (both p<0.001), and increased V E max (p=0.005), but not for changes in fat-free mass (FFM) (p=0.162). However, a significant training x GSTP1 c.313A>G interaction was found only for FFM (p=0.042), absolute and relative VO 2max (p=0.029 and p=0.026), and V E max (p=0.005). As the result of training, significantly greater improvements in VO 2max , V E max and FFM were gained by the GG+GA group compared to the AA genotype group. The results support the hypothesis that heterogeneity in individual response to training stimuli is at least in part determined by genetics, and GSTP1 c.313A>G may be considered as one (of what appear to be many) target polymorphisms to influence these changes.

20

Reliability of fitness trackers at different prices for measuring steps and heart rate: a pilot study

100%

Ricchio K. , Lyter-Antonneau P. , Palao J. M.

Central European Journal of Sport Sciences and Medicine

|

2018

|

tom 24

|

nr 4

57-64

EN

The purpose of this pilot study was to assess the accuracy of steps and heart rate measurement of wrist fitness trackers at different prices. Four healthy college students voluntarily tested three wrist fitness bands and a sports watch (Xiaomi Mi Band, Fitbit Charge HRm, Fitbit Surge, and sports watch Polar M400). Subjects performed two sets of 10 series of 100 steps wearing the fitness trackers on an indoor track in two situations: walking and jogging. In the walking situation, the subjects wore a winter coat and gloves. The variables measured were the number of steps, the heart rate, and the level of error. The steps error percentage for all four devices was lower than 8%. The Fitbit Surge registered significantly more steps in the walking situation (p < 0.001). No significant differences were found in the steps measurements in the jogging situation (p = 0.138). In the jogging situation, significantly lower values in the heart rate measurements for the Xiaomi Mi Band, Fitbit Charger HR, and Fitbit Surge were found (p < 0.001). The results showed that the wearable fitness trackers were relatively accurate for tracking steps (on average, there was a level of error of 2–6%). The assessment of the steps was more accurate in the jogging situation (higher and faster arm swing) than in the walking situation, which involved wearing coats and gloves. The results showed that the wearable fitness trackers that were tested underestimate the heart rate with a level of error of approximately 6–11%. The step error was lower in the walking situation (less mobility of the devices). The price of the devices that were tested did not affect the accuracy of the steps and heart rate assessment. Further studies with a larger sample and more type of devices are needed to confirm these results.