TY  - JOUR
AU  - Gretebeck, Randall J.
A2  - Gretebeck, Randall J.
A2  - Montoye, Henry J.
DB  - BISp
DP  - BISp
KW  - Aktivität, körperliche
KW  - Akzelerometer
KW  - Analyse, statistische
KW  - Diagnostische Verfahren
KW  - Herzfrequenz
KW  - Kalorienzufuhr
KW  - Korrelationsanalyse
KW  - Messgenauigkeit
KW  - Messverfahren
KW  - Methodologie
KW  - Sportmedizin
KW  - Statistik
KW  - Wochentag
KW  - Zeitfaktor
LA  - eng
TI  - Variability of some objective measures of physical activity
TT  - Variabilitaet einiger objektiver Messwerte koerperlicher Aktivitaet
PY  - 1992
N2  - The purpose of this study was to determine how many days subjects should be monitored to provide an estimate of habitual physical activity in employed men engaged in a wide range of occupations. Caloric intake, movement recorders (accelerometers and pedometers), and heart rate were the measurements studied in 30 subjects who were monitored during their waking hours for 7 continuous days. A repeated measures ANOVA showed no significant difference between days for any of the measures when only weekdays were compared. However, when weekend days were included a majority of the measures showed a significant F-ratio. An estimate was made of the number of days required to measure a 7-d period with less than 5 error. The average for all the different measures was 4.9 d. It appears that at least 5 or 6 d are needed to minimize the intra-individual variance a reasonable degree. Weekdays as well as weekend days need to be included. Verf.-Referat
SP  - S. 1167-1172
SN  - 0195-9131
JO  - Medicine and science in sports and exercise
IS  - 10
VL  - 24
M3  - Gedruckte Ressource
ID  - PU199304062074
ER  -