Physiology


Name: ………...............................………………………………………....

Age:………………...            Height:………………………….



Breathing frequency


BF = ……………..(breaths per minute)



Vital capacity


Predict. VC


Males: Predict. VC (ml) = [27.63 – (0.112 x age (yrs)] x height (cm)


Females: Predict. VC (ml) = [21.78 – (0.101 x age (yrs)] x height (cm)



Predict. VC (ml) = ………………………………………………………………………....= ………(l)



Measured VC


FEV[1] [l] – volume expired in the 1^st second

FVC [l] – forced vital capacity

PEF [l/min] – peak expiratory flow

FER [%] –Tiffenau index = 100* [FEV1/FVC]



BTPS factor:  1.09



                      FEV[1] [l]

                                                                                                  FVC [l]

                                                                                                                PEF [l/min]

                                                                                                                              FER [%]

                      ---------

                                                                             * 1.09

                                                                                                 --------

                                                                                                          * 1.09

                                                                                                               ------------

                                                                                                                           ------------

1^st measurement (FVC)







2^nd measurement

(VC)









Compare your measured values with the predicted values and express them as a percentage of the
predicted values.


Predict. VC………(l) = 100%

Measured VC…… (l) =   x %


x = [Measured VC (l) x 100] / Predict. VC (l) = ………………………………………= …..…..%


My Vital capacity (VC or FVC) is ……..% from predict. vital capacity (100%).