Students’– instructors’ physiological responses during step aerobic exercise
Journal Title: Biology of Sport - Year 2006, Vol 23, Issue 2
Abstract
This study tried to examine some physiological response variables (PER) of step aerobics exercise (S-A) for a group of aerobic instructors (n=10) and their students (n=16). All instructors trained an equal 30-min S-A program, for a group of students. Heart rate (HR) was monitored continuously, and the average HR and %HRmax of the first half (min 1st – 15th), and the second half (min 16th – 30th) of the session was calculated. Blood lactate (BL) was measured in the 15th and 30th min of the session. Instructors and students differentiated significantly in age, aerobic dance experience, HR and %HRmax between the15th and 30th min of the S-A session (t-tests AGE: 12.60, p<0.001; Experience: 6.22, p<0.001; HR16-30: 2.48, p<0.05; %HRmax16-30: 3.2, p<0.01). Students, but not instructors, tended to have lower HR during the second half compared to the first half of the S-A (t test: 2.3, p<0.05). BL for both groups increased from the first to the second half of the S-A (p<0.05). HR seemed to fail to monitor training intensity during S-A for the both groups, because of the motor-learning process (characteristic for students), and verbal cueing (instructors). Finally, it seems that previously reported health related problems of aerobic dance instructors are not related to the magnitude of the acute physiological stress during single session, but more likely to the disproportional frequency of the exercises (6-9 sessions weekly).
Authors and Affiliations
D Sekulic, N Rausavljevic
Acute effect of whole body vibration on isometric strength, squat jump, and flexibility in well-trained combat athletes
The purpose of this study was to investigate the effect of whole body vibration (WBV) training on maximal strength, squat jump, and flexibility of well-trained combat athletes. Twelve female and 8 male combat athletes (a...
KINEMATICS THAT DIFFERENTIATE THE BEACH FLAGS START BETWEEN ELITE AND NON-ELITE SPRINTERS
This study differentiated the kinematics of the beach flags sprint start between five elite (three males, two females; age = 21.2 ± 2.6 years; height = 1.71 ± 0.04 m; mass = 66.2 ± 5.9 kg) and five non-elite (three males...
SALIVARY IL-21 AND IGA RESPONSES TO A COMPETITIVE MATCH IN ELITE BASKETBALL PLAYERS
Athletes engaged in strenuous training might experience transient immune suppression that could lead to greater incidence of upper respiratory tract infections (URTI). Since interleukin 21 (IL-21) stimulates immunoglobul...
Effects of heat exposure in the absence of hyperthermia on power output during repeated cycling sprints
The aim of this study was to investigate the effects of heat exposure in the absence of hyperthermia on power output during repeated cycling sprints. Seven males performed four 10-s cycling sprints interspersed by 30 s o...
A 24-HOUR AMBULATORY ECG MONITORING IN ASSESSMENT OF QT INTERVAL DURATION AND DISPERSION IN ROWERS WITH PHYSIOLOGICAL MYOCARDIAL HYPERTROPHY
Myocardial hypertrophy (MH) due to cardiac pathology is characterized by an increase in QT interval duration and dispersion, while the findings for exercise-induced myocardial hypertrophy are contradictory. The majority...