Key result
Obesity accounts for ~15% of variation in %HRR models, while resting HR drives %HRmax variance.
Why the study?
The relationship between different ACSM methods to prescribe exercise intensity using heart rate and oxygen uptake in obese individuals was unclear.
Comparison
Different ACSM exercise intensity prescription methods using HR and VO2
Design
Cross-sectional study with graded exercise test using ramp treadmill protocol
Authors
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Obesity influences %HRR-VO2 relationships; leaves open whether adjusted equations improve intensity prescriptions in obese patients.
Cross-Sectional (n=68)
p-value: p=<0.001
The relationship between exercise intensity determined by %HRR and %VO2R or %VO2peak is influenced by the degree of obesity, whereas %HRmax relationships are affected by resting HR rather than obesity.
Pinet et al. (2008) conducted a cross-sectional in Obesity (n=68). Degree of obesity and resting heart rate was evaluated on Relationship between exercise intensity prescription methods (%HRR-%VO2R, %HRR-%VO2peak, %HRmax-%VO2R, %HRmax-%VO2peak) and the line of identity (p=<0.001). The degree of obesity accounted for approximately 15% of the variation in %HRR-%VO2R and %HRR-%VO2peak regressions, while resting HR accounted for 28-37% of variation in %HRmax equations.
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