Results 261 to 270 of about 5,156,216 (304)

Reduction in Exertional Myoglobinemia After Physical Conditioning

Archives of Internal Medicine, 1979
The development of a sensitive radioimmunoassay for the measurement of myoglobin now permits the accurate determination and detection of even small concentrations of serum myoglobin. To determine the effect of exercise and physical conditioning on serum myoglobin levels, 16 male Army recruits (ages 18 to 28 years) underwent treadmill exercise and ...
Marvin J. Stone, William S. Ritter, James T. Willerson   +2 more
openaire   +3 more sources

The use of an intensive physical exertion test as a final return to play measure in concussed athletes: a prospective cohort

Physician and sportsmedicine, 2018
Objectives: To examine the utility of a novel physical exertion test developed by the Chicago Blackhawks medical staff as a final return to play (RTP) clearance test in youth and young adult athletes, and to determine the relationship between participant
Cameron M. Marshall, N. Chan, P. Tran, C. DeMatteo   +3 more
semanticscholar   +1 more source

Perceived Exertion of Physical Activity During Pregnancy

Journal of Physical Activity and Health, 2015
Background:Maternal physical activity declines across gestation, possibly due to changing perception of physical activity intensity. Our purpose was to a) determine whether rating of perceived exertion (RPE) during a treadmill exercise changes at a given energy expenditure, and b) identify the influence of prepregnancy physical activity behavior on ...
James M. Pivarnik, Mallory R. Marshall
openaire   +3 more sources

Persisting Effects of Concussion on Heart Rate Variability during Physical Exertion.

Journal of Neurotrauma, 2016
The purpose of this study was to evaluate cardiac autonomic modulation in university athletes during the post-acute to late phase (mean, 95 days ±63) of injury at rest and during physical exertion.
J. P. Abaji, D. Curnier, Robert D Moore, D. Ellemberg   +3 more
semanticscholar   +1 more source

PHYSICAL EXERTION AS A RISK FACTOR FOR SPONTANEOUS ABORTION

Epidemiology, 1994
This study examined the association of physical exertion and spontaneous abortion in a case-control study of 607 women whose pregnancies ended in spontaneous abortion and 1,287 women who delivered livebirths in Santa Clara County, CA, in 1986 and 1987. We interviewed women about the number of hours they spent doing heavy housework and caring for young ...
Suzanne Wight, Paul English, Gayle C. Windham, Brenda Eskenazi, Laura Fenster, Shanna H. Swan   +5 more
openaire   +3 more sources

A comparison of subjective and objective measures of physical exertion

Journal of Sports Sciences, 2011
Better methods are needed to improve validity and reliability of physical activity (PA) assessment instruments. The purpose of this study was to compare individual's Borg's Rate of Perceived Exertion (RPE) scores to GT1M ActiGraph accelerometer output, with the aim to better understand estimates of perceived exertion for exercise prescription.
Monica Skatrud-Mickelson, E. Wayne Askew, James C. Hannon, Joan Benson   +3 more
openaire   +3 more sources

Which instructional models influence more on perceived exertion, affective valence, physical activity level, and class time in physical education?

Educational Psychology, 2020
The aim of this study was to examine the effects of two different instructional models (i.e. direct instructional model (DIM) and tactical games model (TGM)) with primary education students.
J. Rodríguez-Negro, J. Yanci
semanticscholar   +1 more source

Measuring physical exertion in virtual reality exercise games

Virtual Reality Software and Technology, 2018
We demonstrate a novel method of applying the capabilities of mobile virtual reality technology to the health sciences by measuring physical exertion in a VR exercise game.
Nikesh Mishra, Eelke Folmer
semanticscholar   +1 more source

TOTAL COLLAPSE ASSOCIATED WITH PHYSICAL EXERTION

Journal of the American Medical Association, 1943
To the Editor:— I should like to comment on the two references to the paper by Colonel Suzman and myself (Mechanisms Involved in Acute Fatal Nontraumatic Collapse Associated with Exertion,Am. Heart J.23:761 [June] 1942) made by Dr. A. M. Master (Total Collapse Associated with Physical Exertion) inThe Journal, Oct. 3, 1942, page 392.
openaire   +2 more sources

"TOTAL COLLAPSE ASSOCIATED WITH PHYSICAL EXERTION"

JAMA: The Journal of the American Medical Association, 1942
To the Editor:— In the August 22 issue ofThe Journal, on page 1431, is an editorial comment entitled "Total Collapse Associated with Physical Exertion." I must take issue with the authors quoted who conclude that severe physical exertion or trauma can produce coronary occlusion.
openaire   +2 more sources