VO Max -
Metabolic Rate
- total energy
used by organisms per unit time_{2}Energy expended during human performance can be measured by the volume of oxygen you can consume while exercising at your maximum capacity. VO max
is the maximum amount of oxygen in milliliters, one can use in one minute
per kilogram of body weight. _{2}MR measured in calories = amt of heat energy --> raise 1g H O 1_{2}C [14.5^{o}
to 15.5^{o} C]^{o}linked to Krebs Cycle - MR is often determined by O consumption
by VO_{2}max_{2}minimal MR is Cal --> that required for basic functions of life maximal MR is Cal --> peak metabolic activity --> Olympic swimmer Those who are more fit have higher
VO
max by working out at an intensity that raises your
heart rate to
between 65 and 85 per cent
of its maximum for at least 20 minutes three to
five times a week. A mean value of VO_{2}
max for male athletes is about
40 milliliters/min and for female
athletes it is about 30 liters/min.
Chart_{2}
are dependent upon: - the chemical ability of the muscular cellular tissue system to use oxygen in breaking down fuels
- the combined ability of cardiovascular and
pulmonary systems to transport the oxygen to the muscular tissue system
max
measuring equipment... _{2}
## Ideal
VO
_{2} |

Vo2 max | Sport |

>75 ml/kg/min | Endurance Runners and Cyclists |

65 ml/kg/min | Squash |

60-65 ml/kg/min | Football (male) |

55 ml/kg/min | Rugby |

50 ml/kg/min | Volleyball (female) |

50 ml/kg/min | Baseball (male) |

BMR

ex : humans - males 1,600 - 1,800 Kc/d

females 1,300 - 1,500 Kc/d

to calculate energy in calories multiple Lt of O

Lance Armstrong - 0.085 ml/min/kg x 5.0 Kcal = 0.425 Kc/min/kg

25.5 Kc/hr/kg or 2,295 Kc/hr

est. 6,500 Kc/d & 10,000 Kc/d for mountains

to lose weight, should expend 3,500 cal = 1 pound body mass.

VO

Calculate your own VO

Treadmill VO

Heart Patients and VO

next

% MHR and %VO_{2}
Max

It is possible to estimate your
exercise intensity as a percentage of
VO_{2
}Max from your heart rate. David Swain (1994) using statistical procedures, examined the
relationship between %MHR and %VO2 Max. Their results led to the following
regression equation, which has been shown to hold true across sex, age and
activity.

%MHR = 0.64 * %VO2 Max + 37

END