RESUMO
The effects of age and body length on the Hoffmann reflex (H-M interval) was evaluated. 179 normal subjects (15-75 y, 150-200 cm) were tested. The normal upper limit (M + 2SD) of the H-M interval ranges from 22.0 ms (male, 155 cm, 20 y) to 34.3 ms (female, 195 cm, 70 y). The limit of 28 ms, that is often mentioned, holds only for young adults with a body length of less than 175 cm. Moreover it proved that a normal limit of the H-M interval asymmetry of less than 2 ms is too strict. For a mixed population less than 3 ms seems to be a safer upper limit for normal asymmetries.
Assuntos
Envelhecimento , Peso Corporal , Reflexo H , Reflexo Monosináptico , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores SexuaisRESUMO
The EOG was determined in 130 normal subjects. The mean value was 2.42, the interindividual standard deviation 0.42. The difference between the right eye and the left eye was not significant, neither was the difference between a group of youngsters (20-30 years) and an older age group (50-55 years). In another group of 48 normal subjects, 10 or more EOGs were determined per individual. The intraindividual standard deviation was not a fixed number, but appeared to be dependent on the height of the EOG, being approximately 10% of the EOG value. This is a confirmation of one of our previous observations.
