52 research outputs found
Cardiorespiratory fitness, adiposity and incident asthma in adults
Available large-scale prospective studies on adiposity and asthma used body mass index as an
indicator of adiposity.
Studies involving more accurate measures of adiposity, such as body
fat percentage (BF%), are needed to confirm or contrast body mass index - related results.
Cardiorepiratory fitness is a strong predictor of morbidity and mortality,
and the available
literature suggests that moderate-high cardiorespiratory fitness reduces many of the health
hazards associated with obesity.
The present study aimed: 1) to examine whether
cardiorespiratory fitness and/or BF% are associated with subsequent acquisition of asthma in
adults; and 2) to test the hypothesis that a high cardiorespiratory fitness level can reduce the
risk of incident asthma in individuals with excess adiposity
A 1-Year Study of Endurance Runners: Training, Laboratory Tests, and Field Tests
Purpose:
To compare critical speed (CS) measured from a single-visit field test of the distanceātime relationship with the ātraditionalā treadmill time-to-exhaustion multivisit protocol.
Methods:
Ten male distance runners completed treadmill and field tests to calculate CS and the maximum distance performed above CS (Dā²). The field test involved 3 runs on a single visit to an outdoor athletics track over 3600, 2400, and 1200 m. Two field-test protocols were evaluated using either a 30-min recovery or a 60-min recovery between runs. The treadmill test involved runs to exhaustion at 100%, 105%, and 110% of velocity at VO2max, with 24 h recovery between runs.
Results:
There was no difference in CS measured with the treadmill and 30-min- and 60-minrecovery field tests (P .05). A typical error of the estimate of 0.14 m/s (95% confidence limits 0.09ā0.26 m/s) was seen for CS and 88 m (95% confidence limits 60ā169 m) for Dā². A coefficient of variation of 0.4% (95% confidence limits: 0.3ā0.8%) was found for repeat tests of CS and 13% (95% confidence limits 10ā27%) for Dā².
Conclusion:
The single-visit method provides a useful alternative for assessing CS in the field
Anthropometric profile and physical performance characteristic of the Brazilian amputee football (soccer) team
Aspectos relacionados com a otimizaĆ§Ć£o do treinamento aerĆ³bio para o alto rendimento
Regression of oxygen consumption on heart rate during supported and unsupported deep water running in healthy mixed gender subjects
Identification of a Rating of Perceived Exertion-Based Warning Zone to Anticipate Graded Treadmill Test Termination
Teaching and Learning Method of Korean Dance Exercise - Based on Measurement of Exercise Intensity During Korean Dance Exercise -
Real-Time Particulate and CO Concentrations from Cookstoves in Rural Households in Udaipur, India
Almost
3 billion people around the globe use traditional three-stone
cookstoves and open fires to warm and feed themselves. The World Health
Organization estimates annual mortality rates from domestic solid
fuel combustion to be around 4 million. One of the most affected countries
is India. Quantifying pollutant concentrations from these cookstoves
during different phases of operation and understanding the factors
influencing their variability may help to identify where improvements
should be targeted, enhancing indoor air quality for millions of the
worldās most vulnerable people. Gas and particulate measurements
were collected between June and August, 2012, for 51 households using
traditional cookstoves, in the villages of Udaipur district, Rajasthan,
India. Mean pollutant concentrations during steady-state mode were
4989 Ī¼m<sup>2</sup> cm<sup>ā3</sup>, 9835 Ī¼g m<sup>ā3</sup>, and 18.5 ppm for lung-deposited surface area, PM<sub>2.5</sub>, and CO, respectively. Simple and multivariate regression
analysis was conducted. Fuel amount, fuel diameter, duration of the
cookstove run, roof-type, and the room dimension explained between
7% and 21% of the variability for the pollutant metrics. CO demonstrated
weaker correlations with explanatory variables. Some of these variables
may be indicative of socio-economic status and could be used as proxies
of exposure in lieu of pollutant measurements, hence these variables
may help identify which households to prioritize for intervention.
Such associations should be further explored
Prolonged Exercise and Changes in Percent Fat Determinations by Hydrostatic Weighing and Scintillation Counting
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