Table 4.

Correlations between sleep and physical activity in adults

Adults (n = 71)	Time in bed (h/day)	Total sleep time (h/day)	Sleep efficiency (%)	Sleep fragmentation index (%)
Median duration of prolonged sedentary bouts (min)	r = 0.03 p = 0.80	r = 0.05 p = 0.69	r = 0.24 p = 0.048	r = − 0.23 p = 0.06
Total prolonged sedentary bout time (min/day)	r = − 0.32 p = 0.009	r = − 0.28 p = 0.02	r = − 0.04 p = 0.75	r = − 0.07 p = 0.59
Total activity Z-score (standard deviations)	r = 0.15 p = 0.24	r = 0.12267 p = 0.319	r = 0.04 p = 0.77	r = − 0.13 p = 0.28

Spearman correlation coefficients. Significant correlations in bold