Naslov
ASSOCIATIONS BETWEEN PHYSICAL ACTIVITY AND SLEEP IN ACTIVE ADULTS: A SUBJECT-SPECIFIC ANALYSIS

Autori
Martinko, Antonio ; Koražija, Filip ; Sorić, Maroje

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of 9th International scientific conference on Kinesiology / Šalaj, Sanja ; Škegro, Dario - Opatija, 2021, 243-243

Skup
9th International Scientific Conference on Kinesiology, Satellite Symposium: Social Aspects of Sport in Southeastern Europe: Never-ending Transitions

Mjesto i datum
Opatija, Hrvatska, 15.09.2021. - 19.09.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Recenziran

Ključne riječi
recreation ; exercise ; sleeping ; daily monitoring ; regression

Sažetak
The main purpose of this study was to examine whether the duration of moderate-to-vigorous physical activity during the day (MVPA), is associated with sleep quantity and quality the following night [i.e. total sleep time (TST), sleep efficiency (SE)]. Fitbit Charge 3 was used to collect MVPA and sleep related data among 35 recreationally active adults. MVPA and sleep data was collected by combining triaxial accelerometry, heart rate and heart rate variability signals. Age, sex, self- reported height, weight and time of the week were controlled for. Two linear regression models were constructed where every subject represented a single unit of analysis. The models included MVPA as an independent variable and TST or SE the following night as dependent variables. Both models included the following confounders: 1) dependent and independent variables at the preceding lag, to control for possible autocorrelations, 2) the progressive number of days as a means of controlling for the effect of elapsed time on the associations, 3) weekday/weekend. A median number of 14 pairs of days and nights from each of the 35 subjects (60% females, age = 43.83±8.42 years, BMI at baseline = 24.76±2.83 kg/m2) were analyzed. Missing data values were imputed as mean values of respective variables. Average minutes of MVPA per day across subjects amounted to 53.56 (19.44), average TST was 400.68 (48.58) minutes per night and average SE was 87.31 (1.78) %. Subjects that slept for more or less than 7 hours per night on average were clustered into 2 groups and showed similar trends. Significant associations between MVPA and TST were found in only 3 subjects [#15 (p = 0.05) and #23 (p = 0.05) positive and #11 (p = 0.02) negative association], while MVPA and SE were positively associated in only 1 subject [#37 (p = 0.05)]. There was an absence of a significant relationship among the other 32 subjects (91% of subjects), without a clear general trend for the effect of MVPA on sleep. This study found that among these recreationally active and healthy subjects, physical activity did not affect subsequent sleep quantity or quality. Still, a relatively short study period and predominantly optimal sleep quality limit our conclusions. Presented results are important as they show that only some people may have a true benefit from interventions whose aim is to utilize the inconsistent association between physical activity and sleep.

Izvorni jezik
Engleski

Znanstvena područja
Kineziologija

POVEZANOST RADA