Intensity of Sports Participation in Circumpubertal Children

1990 ◽  
Vol 2 (1) ◽  
pp. 57-64
Author(s):  
Geraldine Naughton ◽  
John Carlson
Keyword(s):  
Heart Rate ◽  
Training Stimulus ◽  
Sports Participation ◽  
Basketball Players ◽  
Heart Rates ◽  
Competitive Game ◽  
Significant Difference ◽  
Rate Maximum ◽  
The Difference ◽  
Competitive Games

The heart rate intensity during 20 minutes of sports participation by circumpubertal children was monitored several times over a season. The competitive games’ mean absolute heart rates for basketball, badminton, netball, and tennis were 170, 159, 168, and 162 bts·min−1 (or 72, 75, 69, and 67% of heart rate maximum), respectively. The mean abolute heart rates for 20 minutes of participation under practice conditions for badminton, basketball, netball, and tennis were 149, 157, 144, and 135 bts·min−1, or 73, 75, 69, and 67% of heart rate maximum. At the 0.05 level of probability there was a significant difference between the heart rate intensities under competitive game and practice situations in the badminton, netball, and tennis groups. The difference between intensities of competitive games and practices was nonsignificant in the basketball players. The study concluded that participation in practice and game conditions was positive in providing the potential for a training stimulus.

scholarly journals Peculiarities of the autonomic balance assessed through heart rate variability analysis in sportsmen and nonsportsmen

2008 ◽  
pp. 17-25 ◽  
Author(s):  
Oto Barak ◽  
Oleg Glazacev ◽  
Helena Dudnik ◽  
Irina Korobeinikova ◽  
Aleksandar Klasnja ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domain ◽  
Control Group ◽  
Heart Rate Variability Analysis ◽  
Autonomic Balance ◽  
Basketball Players ◽  
Significant Difference ◽  
The Difference ◽  
Novi Sad

A comparative study was used to analyze the difference in autonomic balance assessed by time and frequency domain parameters of heart rate variability (HRV) between students athletes and non-sportsmen. Five-minute digital ECG trays were recorded in 21 students - athletes, 10 basketball players recruited from first league clubs of No- vi Sad and the Serbian representatives and 11 rowers from the Novi Sad rowing club 'Danubius'. The control group was formed by 15 non-sportsmen, students of the Medical faculty in Novi Sad who underwent the same registrations. Time and frequency-domain of HRV were analyzed by a software developed by the company 'Neurosoft', VNS-Spektr, Ivanovo, Russia. Resting heart rate in athletes was significantly lower (p < 0.01) than in non-sportsmen. In time-domain parameters HRV significantly higher values were present in the group of sportsmen as opposed to non-sportsmen RRNN (p < 0.01), RMSSD (p < 0.02) and pNN50 (p < 0.01). In frequency-domain of HRV statistically significant difference between the two groups was observed only in normalized values of LF and HF (p < 0.05) and their ratio LF/HF (p < 0.02). LFn was larger in non-sportsmen than in students-athletes. On the other hand HFn was larger in athletes than in non-sportsmen. The LF/HF ratio was larger in non-sportsmen (2.87 0.34) than in athletes (1.91 0.20). After dividing the athletes recruited for this investigation into two groups (basketball players and rowers) significant level of difference (p < 0.05) in HRV data was present only in the VLF spectrum (2060.55 290.68 ms2 for rowers and 1303.30 ? 169.95 ms2 for basketball players).

Does body position, age, and heart rate induce IOP’s changes?

2021 ◽  
pp. 112067212110233
Author(s):  
Marcelina Sobczak ◽  
Magdalena Asejczyk ◽  
Malwina Geniusz
Keyword(s):  
Heart Rate ◽  
Body Position ◽  
Age Groups ◽  
Cardiovascular Parameters ◽  
Entire Cohort ◽  
Significant Difference ◽  
Group A ◽  
The Difference ◽  
Group B ◽  
Effect Of Age

Objectives: The main goal of this research was to determine the differences between the values of intraocular pressure (IOP) in the supine and sitting positions, and to assess the effect of age and cardiovascular parameters. Methods: Seventy-two healthy adults were enrolled and classified into age groups: 20–30 years (group A), 31–40 years (group B), and 41–71 years (group C). Corneal biometry and cardiovascular parameters, such as heart rate (HR), were measured. IOP measurements were taken in the sitting position (IOPS) and in the supine position (IOPL) using the iCare® Pro tonometer. Results: A significant difference between the IOPS and IOPL in the entire cohort was found ( p < 0.001). Regarding the age subgroups, a significant difference ( p < 0.001) between the IOPS and IOPL was obtained in group A (2.6 ± 1.6 mmHg) and group C (1.5 ± 1.3 mmHg). There were no significant differences in the IOPS between groups. The highest IOP values were obtained for group A. The correlations between HR and IOPS are statistically significant for group A and group B, and for HR and IOPL-S for group B only. Multivariate analysis showed that HR has a significant influence on the difference in IOP in the two body positions. Conclusion: A statistically significant difference between the effect of age and the values of IOPS and IOPL was shown. Cardiovascular parameters showed some relevant statistical dependencies, but with a rather marginal significance in young people. The influence of body position for the measurement of IOP for healthy subjects does not seem to matter, despite the fact that there are some dependencies that are statistically significant.

Effect of smoking on cardiovascular autonomic functions

2021 ◽  
Vol 9 (2) ◽  
pp. 3780-3784
Author(s):  
P.Vani ◽  
◽  
Sharan B Singh M ◽  
Keyword(s):  
Heart Rate ◽  
Autonomic Function ◽  
T Test ◽  
Resting Heart Rate ◽  
Autonomic Functions ◽  
Mean Values ◽  
Function Tests ◽  
Significant Difference ◽  
The Mean ◽  
The Difference

Introduction: Cigarette smoking is a prime risk factor for cardiovascular morbidity and mortality. Chronic smoking results in autonomic dysfunction leading to increased cardiovascular risk in smokers. The present study was planned to study the effect of smoking on the Cardiovascular Autonomic Functions among smokers. Materials and Methods: Fifty male subjects who were in the age group of 25 to 45 years. They were grouped into 25 smokers and 25 non-smokers. The participant subjects were selected among the staff members, residents and the patients from the routine OPD in SVIMS. Prior to study, they were informed about the procedure and the purpose of the study tests and written consents were obtained from them. The Cardiovascular Autonomic Function Tests were assessed by using a POLYGRAPH which was available in the department. Results and Conclusion: After applying the ‘t’-test for the difference between the two sample means, it was observed that there was a highly significant difference between the mean values of the BMI(i.e.p<0.01) and the para-sympathetic function tests among the smokers and the non – smokers(i.e.p<0.00). The Resting Heart Rate had significantly increased and the Deep breathing difference, the postural tachycardial index (Response to standing) and the Valsalva Ratio had significantly decreased in the smokers as compared to those in the non – smokers. After applying the ‘t’-test for the difference between the two sample means, it was observed that there was no significant difference between the mean values of the Postural hypotension test (i.e. p>0.05) and that there was a highly significant difference between the mean values of the Sustained handgrip test in the smokers and the non – smokers (i.e. p<0.00). KEY WORDS: Cardiovascular autonomic function tests, Smoking, Resting heart rate.

scholarly journals Comparison of heart rate recovery between normotensive young adults with and without a parental history of hypertension

2020 ◽  
Vol 11 (3) ◽  
pp. 31-36
Author(s):  
Satyajit Bagudai ◽  
Hari Prasad Upadhyay
Keyword(s):  
Heart Rate ◽  
Young Adults ◽  
Heart Rate Recovery ◽  
Step Test ◽  
Exercise Heart Rate ◽  
Parental History ◽  
Recovery Index ◽  
Significant Difference ◽  
History Of ◽  
The Difference

Introduction: Studies have reported that off springs of hypertensive parents are more likely to develop hypertension. Affection of target organ starts even before the diagnosis of hypertension. Autonomic dysfunction may be the initial cardiac effects in the pathogenesis of hypertension. Till now very few studies have been done to find the early outcomes in the cardiac autonomic functions in the normotensive siblings of hypertensive patients. Heart rate recovery after exercise is a useful marker for cardiac autonomic function. Since the etio-pathogenesis of hypertension is expected to affect the autonomic cardiovascular parameters even before the prehypertensive stage, the following study was carried out to analyze the heart rate recovery, in the descendent non- hypertensive young adults with and without parental history of hypertension. Aim and objective: This research study was aimed to study the quantify and compare the difference (if any) of heart rate recovery in response to 3minute step test between non hypertensive children of non- hypertensive and hypertensive parents within an age group of 18-22 years. Material &Methods: A total of 63 normotensive students were divided into one hypertensive parents(HP) group containing students with parental history of hypertension) and one non hypertensive parents group (NHP) having students without parental history of hypertension). Each student was subjected to 3 minute Master step test. Recordings of heart rate were made before and after exercise. Heart rate recovery index (HRRI) of 1minute (HRRI1), as well as in 2, 3 and 4 minute (HRRI2, HRRI3, HRRI4) were calculated and analyzed. Results: The resting (basal) heart rate as well as 1st minute heart rate recovery index (HRRI1) was not significantly different in the two groups. Likewise, the 2nd minute (HRRI2), 3rd minute (HRRI3), and 4th minute HRRI (HRR4) respectively were also not significantly different between the two groups. Conclusion: This study concluded that there is no significant difference in heart rate recovery among non-hypertensive young adults, with and without parental history of hypertension.

Maximum exercise heart rate reduction with maturation in the rat

1976 ◽  
Vol 40 (5) ◽  
pp. 741-744 ◽  
Author(s):  
K. A. Corre ◽  
H. Cho ◽  
R. J. Barnard
Keyword(s):  
Heart Rate ◽  
Exercise Heart Rate ◽  
Heart Rate Reduction ◽  
Rate Reduction ◽  
Heart Rates ◽  
Maximum Exercise ◽  
Control Heart ◽  
Significant Difference ◽  
Neural Influences

Maximum exercise heart rate decreases with maturation in the rat as well as in man. The present study was undertaken to investigate the mechanism(s) which might be responsible for this reduction in max exercise heart rate in the rat. Maximum exercise heart rates were 618 +/- 7 vs. 580 +/- 9 beats/min for the young (5 wk) and mature (19 wk) rats, respectively. Atropine had no effect on max exercise heart rate. Propranolol reduced max heart rate in both groups with the older rats having the lowest value. Resting heart rates were recorded following injections of atropine propranolol, and propranolol plus atropine. Under all conditions, including control, heart rates were lower in the mature rats. Electrical stimulation in situ showed a significant difference in the threshold voltage for stimulation at 600 beats/min: 1.1 +/- 0.2 vs. 1.6 +/- 0.1 V for the young and mature rats, respectively. These data suggest that intrinsic changes occur in the myocardium with maturation and the reduction in max exercise heart rate is due to these intrinsic changes as opposed to changes in neural influences.

Psychophysiological Comparison of Self-Efficacy and Resting Heart Rate

2002 ◽  
Vol 94 (3) ◽  
pp. 720-722
Author(s):  
Matthew S. Wiggins
Keyword(s):  
Heart Rate ◽  
Analysis Of Variance ◽  
Self Efficacy ◽  
Exercise Program ◽  
Resting Heart Rate ◽  
Heart Rates ◽  
Fitness Center ◽  
Significant Difference ◽  
Main Effect ◽  
Individual Self

This study was used to assess the premise that lower resting heart rates should be associated with higher scores on self-efficacy for exercisers. A total of 64 participants, 29 men and 35 women ranging in age from 18 to 38 years old ( M = 23.22, SD = 4.19), currently participating in an exercise program at a fitness center, were assessed using the Exercise Specific Self-efficacy Scale to measure general individual self-efficacy, along with obtaining resting heart rates. Participants were separated into three different groups based on individual resting heart-rate values. Results for a 2 (sex) by 3 (heart rate) two-way analysis of variance indicated a significant difference in self-efficacy scores ( F2.58 = 3.24, p<.05) among the three groups. No interaction or main effect for sex was found.

Defensive Strategy and Player Sex Impact Heart-Rate Responses During Games-Based Drills in Professional Basketball

2020 ◽  
pp. 1-7
Author(s):  
David Suárez-Iglesias ◽  
Rubén Dehesa ◽  
Aaron T. Scanlan ◽  
José A. Rodríguez-Marroyo ◽  
Alejandro Vaquera
Keyword(s):  
Heart Rate ◽  
Training Stimulus ◽  
Training Load ◽  
Defensive Strategy ◽  
Basketball Players ◽  
Professional Basketball ◽  
Defensive Strategies ◽  
Cardiovascular Stress ◽  
The Impact ◽  
And Training

Purpose: Games-based drills (GBD) are the predominant form of training stimulus prescribed to male and female basketball players. Despite being readily manipulated during GBD, the impact of defensive strategy on the sex-specific demands of GBD remains unknown. Therefore, the aim of this study was to quantify and compare the heart-rate (HR) responses experienced during 5v5 GBD using different defensive strategies (man-to-man defense vs zone defense [ZD] formations) according to player sex. Method: HR was recorded in 11 professional male and 10 professional female basketball players while performing 5v5 GBD with different defensive strategies (man-to-man defense or ZD). HR-based training load was also calculated using the summated heart-rate zones model. Results: During man-to-man defense, mean HR (), relative time (in percentage) spent working at 90% to 100% maximal HR (), and summated heart-rate zones () were greater (P < .05) in female players compared with males. During ZD, higher (P < .01) peak HR (), mean HR (), relative and absolute (in minutes) time spent working at 80% to 89% maximal HR ( and .03, respectively) and 90% to 100% maximal HR ( and .09, respectively), and summated heart-rate zones () were observed in female players compared with males. Conclusions: The defensive strategy employed during 5v5 full-court GBD influences HR responses and training load differently according to sex, where female players experience higher HR responses than males, especially when ZD are adopted. Basketball coaching staff can use these findings for the precise manipulation of team defenses during GBD to elicit desired cardiovascular stress on players.

scholarly journals Adverse Effects of Carbetocin versus Oxytocin in the Prevention of Postpartum Haemorrhage after Caesarean Section: A Randomized Controlled Trial

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
D. Mannaerts ◽  
L. Van der Veeken ◽  
H. Coppejans ◽  
Y. Jacquemyn
Keyword(s):  
Heart Rate ◽  
Randomized Controlled Trial ◽  
Caesarean Section ◽  
Blood Loss ◽  
Controlled Trial ◽  
Hypotensive Effect ◽  
Randomized Controlled ◽  
Significant Difference ◽  
Effect Difference ◽  
The Difference

Purpose. To compare the incidence of nausea, vomiting, and arterial hypotension between carbetocin and oxytocin to prevent haemorrhage after caesarean section (CS).Methods. A randomized controlled trial in term pregnant women undergoing planned CS. Groups were randomized to carbetocin or oxytocin. Blood pressure (BP), heart rate, presence of nausea/vomitus, and need for vasopressors were evaluated throughout surgery. Preoperative and postoperative haemoglobin and haematocrit levels were compared.Results. Fifty-eight women were randomized (carbetocinn=32; oxytocinn=26). Both medications had hypotensive effect, difference in BP for carbetocin versus oxytocin: systolic (14.4 ± 2.4 mmHg versus 8.5 ± 1.8 mmHg); diastolic (7.8 ± 1.6 mmHg versus 8.9 ± 3.0 mmHg) without significant difference between the drugs (p=0.1andp=0.7). Both groups had similar needs for vasopressors. The presence of nausea was not rare, but the difference was not statistically significant (p=0.4). Average blood loss was slightly lower in the carbetocin group but not statistically significant (p=0.8).Conclusion. In planned CS, a possible clinical significant lower incidence of nausea after carbetocin was noted but this was not statistically significant. There were no differences regarding BP, heart rate, the need for vasopressor, and blood loss. The study was registered in the International Journal of Clinical Trials (ISRCTN95504420, 2/2017).

scholarly journals Tracking Changes in Maximal Oxygen Consumption with the Heart Rate Index in Female Collegiate Soccer Players

2014 ◽  
Vol 42 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Michael R. Esco ◽  
Ronald L. Snarr ◽  
Andrew Flatt ◽  
Matthew Leatherwood ◽  
Adam Whittaker
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Endurance Training ◽  
Maximal Exercise ◽  
Maximal Oxygen Consumption ◽  
Soccer Players ◽  
Maximal Exercise Test ◽  
Significant Difference ◽  
The Difference ◽  
Training Protocol

Abstract The purpose of this study was to determine if the HRindex Method (VO2max = [6 x HRindex - 5] x 3.5, where HRindex = HRmax/HRrest) was accurate for tracking changes in VO2max following 8-weeks of endurance training among collegiate female soccer players. Predicted VO2max via the HRindex Method and observed VO2max from a maximal exercise test on a treadmill were determined for a group of female soccer athletes (n = 15) before and following an 8-week endurance training protocol. The predicted (pVO2max) and observed (aVO2max) values were compared at baseline and within 1-week post-training. Change values (i.e., the difference between pre to post) for each variable were also determined and compared. There was a significant difference between aVO2max before (43.2 ± 2.8 ml.kg.min-1) and following (46.2 ± 2.1 ml.kg.min-1) the 8-week training program (p < 0.05). However, pVO2max did not significantly change following training (pre = 43.4 ± 4.6 ml.kg.min-1, post = 42.9 ± 4.1 ml.kg.min-1, p = 0.53). Furthermore, the correlation between the change in aVO2max and the change in pVO2max was trivial and non-significant (r = 0.30, p = 0.28). The HRindex Method does not appear to be suitable for predicting changes in VO2max following 8-weeks of endurance training in female collegiate soccer players

An Assessment of Hallux Limitus in University Basketball Players Compared with Noncompetitive Individuals

2014 ◽  
Vol 104 (5) ◽  
pp. 468-472 ◽  
Author(s):  
Paul Trégouët
Keyword(s):  
Range Of Motion ◽  
Metatarsophalangeal Joint ◽  
Hallux Rigidus ◽  
Artificial Turf ◽  
Basketball Players ◽  
First Metatarsophalangeal Joint ◽  
Hallux Limitus ◽  
Significant Difference ◽  
Turf Toe ◽  
The Difference

BackgroundInjuries of the first metatarsophalangeal joint have lately been receiving attention from researchers owing to the important functions of this joint. However, most of the studies of turf toe injuries have focused on sports played on artificial turf.MethodsThis study compared the range of motion of the first metatarsophalangeal joint in collegiate basketball players (n = 123) and noncompetitive individuals (n = 123).ResultsA statistically significant difference (P &lt; .001) in range of motion was found between the two groups. The difference between the two sample means was 21.35°.ConclusionsWith hallux rigidus being a potential sequela of repeated turf toe injuries, it seems likely that subacute turf toe injuries occur in basketball players, leading to degenerative changes that result in hallux limitus.

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