A Study on the Construct-related Validity of Borg’s RPE according to Progressive Exercise Intensity Road

2018 ◽  
Vol 27 (5) ◽  
pp. 1477-1486
Author(s):  
Tae-Won Kwon ◽  
Jin-Gwan Yang
Keyword(s):  
Exercise Intensity ◽  
Progressive Exercise

scholarly journals Reproducibility and feasibility of right ventricular strain and strain rate (SR) as determined by myocardial speckle tracking during high-intensity upright exercise: a comparison with tissue Doppler-derived strain and SR in healthy human hearts

2014 ◽  
Vol 1 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Rachel N Lord ◽  
Keith George ◽  
Helen Jones ◽  
John Somauroo ◽  
David Oxborough
Keyword(s):  
Right Ventricular ◽  
Strain Rate ◽  
Exercise Intensity ◽  
Speckle Tracking ◽  
Tissue Doppler ◽  
Healthy Human ◽  
Velocity Imaging ◽  
Strain And Strain Rate ◽  
Right Ventricular Strain ◽  
Progressive Exercise

This study aimed to establish feasibility for myocardial speckle tracking (MST) and intra-observer reliability of both MST and tissue velocity imaging (TVI)-derived right ventricular (RV) strain (ε) and strain rate (SR) at rest and during upright incremental exercise. RV ε and SR were derived using both techniques in 19 healthy male participants. MST-derived ε and SR were feasible at rest (85% of segments tracked appropriately). Feasibility reduced significantly with progressive exercise intensity (3% of segments tracking appropriately at 90% maximum heart rate (HRmax)). Coefficient of variations (CoVs) of global ε values at rest was acceptable for both TVI and MST (7–12%), with low bias and narrow limits of agreement. Global SR data were less reliable for MST compared with TVI as demonstrated with CoV data (systolic SR=15 and 61%, early diastolic SR=16 and 17% and late diastolic SR=26 and 31% respectively). CoVs of global RV ε and SR obtained at 50% HRmax were acceptable using both techniques. As exercise intensity increased to 70 and 90% HRmax, reliability of ε and SR values reduced with larger variability in MST. We conclude that RV global and regional ε and SR data are feasible, comparable and reliable at rest and at 50% HRmax using both MST and TVI. Reliability was reduced during higher exercise intensities with only TVI acceptable for clinical and scientific use.

Effects of Exercise Intensity, Duration and Recovery on in vitro Neutrophill Function in Male Athletes

1999 ◽  
Vol 20 (02) ◽  
pp. 128-130 ◽  
Author(s):  
P. Robson ◽  
A. Bllannin ◽  
N. Walsh ◽  
L Castell ◽  
M. Cleeson
Keyword(s):  
Exercise Intensity ◽  
Male Athletes

Body balance in a free-standing position in road and off-road cyclists

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Paulina Hebisz ◽  
Rafal Hebisz ◽  
Marek Zaton
Keyword(s):  
Sagittal Plane ◽  
Standing Position ◽  
The Body ◽  
Free Standing ◽  
Body Balance ◽  
Eyes Closed ◽  
Road Cycling ◽  
Progressive Exercise ◽  
Before And After ◽  
Road Cyclists

AbstractBackground: The purpose of this study was to compare body balance in road and off-road cyclists, immediately before and after the racing season.Material/Methods: Twenty individuals participated in the study and they were divided into two groups: specialists in road-cycling (n = 10) and in off-road cycling (n = 10). Immediately before and after the five-month racing season stabilographic trials were carried out (at rest and after progressive exercise). In assessing body balance the distance and velocity of the centre shifts (in the anterior-posterior and left-right direction) were analysed. The tests were performed with the cyclists’ eyes open, eyes closed, and in feedback.Results: After the racing season, in the off-road cyclists’ group, distance and velocity of the centre of pressure shifts increased after a progressive exercise.Conclusions: In the off-road cyclists’ group the balance of the body in the sagittal plane deteriorated after the racing season. Moreover, after the racing season off-road cyclists were characterized by a worse balance of the body, compared to road cyclists

Effect of exercise intensity on body composition in overweight and obese individuals: A prospective study

2018 ◽  
Vol 7 (3) ◽  
pp. 54-59
Author(s):  
Kiran Kumar Patnaik ◽  
◽  
S Bethiun ◽  
Y V A Ramalakshmi ◽  
◽  
...  
Keyword(s):  
Body Composition ◽  
Prospective Study ◽  
Exercise Intensity ◽  
A Prospective Study

Oronasal partitioning of ventilation during exercise in humans

1991 ◽  
Vol 71 (2) ◽  
pp. 546-551 ◽  
Author(s):  
J. R. Wheatley ◽  
T. C. Amis ◽  
L. A. Engel
Keyword(s):  
Upper Airway ◽  
Normal Subjects ◽  
Face Mask ◽  
Inspiratory Flow ◽  
Mean Flow ◽  
Total Flow ◽  
Progressive Exercise ◽  
Expiratory Flow ◽  
Exercise In Humans

The partitioning of oronasal breathing was studied in five normal subjects during progressive exercise. Subjects performed three to five identical runs, each consisting of four 1-min work periods at increments of 50 W. Nasal and oral airflow were measured simultaneously using a partitioned face mask both during and for 4 min after exercise. Total mean flows were the sum of nasal and oral flows. At a total mean inspiratory flow of 2 l/s, the nasal fraction of total flow was 0.36 +/- 0.04 (SE) and decreased by 6 +/- 3% between total flows of 1.5 and 2.5 l/s. Throughout exercise, the nasal fraction of total mean inspiratory flow did not differ from that of total expiratory flow and was similar to that of total mean inspiratory flow during the postexercise period at a corresponding total mean flow (both P greater than 0.02). The results show that oronasal flow partitioning is not directly due to the exercise itself but is related to the level of ventilation and is uninfluenced by the direction of upper airway flow (i.e., inspiratory vs. expiratory). These findings suggest tightly controlled modulation of the relative resistances of the oral and/or nasal pathways.

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