## 3 Results
### Daily Physical Activity  
The 242 included participants wore the accelerometer-based sensor for an average of 5.5 days, ranging from 3 to 10 days with an average of 12.2 h per day (Table 2). The 117 men wore the sensor for 5.7 days (range 3-10 days) with an average of 12.4 h per day, while the women wore the accelerometer for 5.3 days (range 3-8 days) with an average of 11.9 h per day (Table 3). \begin{table}
\begin{tabular}{c c c c c c c} \hline  & **Total** & **18–29** & **30–39** & **40–49** & **50–59** & **60–69** & \(\geq\)**70** \\ \hline Number, n (\%) & 242 (100) & 25 (10.3) & 20 (8.3) & 42 (17.4) & 59 (24.4) & 45 (18.6) & 51 (21.1) \\ Male, n (\%) & 118 (48.8) & 5 (20.0) & 10 (50.0) & 19 (45.2) & 25 (42.4) & 28 (62.2) & 31 (60.8) \\ \hline Height, mean (SD) a & 173.3 (8.8) & 171.3 (8.5) & 174.1 (8.0) & 175.5 (10.4) & 175.1 (7.6) & 173.4 (9.0) & 170.1 (8.3) \\ Weight, mean (SD) b & 77.6 (15.9) & 66.4 (12.6) & 78.5 (16.1) & 77.6 (14.5) & 78.9 (14.2) & 82.8 (19.9) & 76.7 (14.1) \\ BMI, mean (SD) b & 25.8 (4.6) & 22.5 (3.0) & 25.9 (5.0) & 25.0 (3.4) & 25.7 (4.7) & 27.4 (5.7) & 26.4 (4.1) \\ \hline Marital status, n (\%) a & 158 (65.3) & 7 (28.0) & 13 (65.0) & 34 (81.0) & 38 (64.4) & 37 (82.2) & 29 (58.0) \\ Married & 31 (12.8) & 7 (28.0) & * & 5 (11.9) & 8 (13.6) & 4 (8.9) & * \\ Cohabiting & 52 (21.49) & 11 (44.0) & * & 3 (7.1) & 13 (22.0) & 4 (8.9) & * \\ Single & 158 (65.3) & 7 (28.0) & 13 (65.0) & 34 (81.0) & 38 (64.4) & 37 (82.2) & 29 (58.0) \\ \hline Education, n (\%) d & & & & & & & \\ Primary or secondary & 131 (54.1) & 15 (60.0) & 8 (40.0) & 18 (42.9) & 31 (52.5) & 27 (60.0) & 32 (62.8) \\ Higher & 107 (44.2) & 9 (36.0) & 12 (60.0) & 24 (57.1) & 27 (45.8) & 18 (40.0) & 17 (33.3) \\ \hline Back pain c & & & & & & & \\ Yes & 110 (45.5) & 10 (40.0) & 9 (45.0) & 15 (35.7) & 27 (45.8) & 24 (53.3) & 25 (49.0) \\ No & 129 (53.3) & 15 (60.0) & 11 (55.0) & 27 (64.3) & 32 (54.2) & 21 (46.7) & 23 (45.1) \\ Headache & & & & & & & \\ Yes & 59 (24.4) & 8 (32.0) & 7 (35.0) & 12 (28.6) & 12 (20.3) & 13 (28.9) & 7 (13.7) \\ No & 177 (73.1)c & 17 (68–0) & 13 (65.0) & 30 (71.4) & 46 (76.0) & 31 (71.1) & 39 (76.5) \\ \hline \end{tabular}  
* Number not reported due to issues with anonymity caused by fewer than 3 participants; a one missing, b two missing, c three missing, d four missing, primary or secondary education: primary school (grade 0–10) or secondary school (more than primary school, but no university degree); higher education: obtained university degree; SD, standard deviation, BMI, body mass index.  
\end{table} 
Table 1: Population Characteristics According to Age Groups. The participants took an average of 6095 (SD 3351) steps daily, and when examining individual age groups the oldest group had the lowest average daily number of steps (Table 2). Women had a higher number of average daily steps compared to men, however, this differed when examining the number of steps for the individual age groups (Table 3). The overall population had an average cadence of 98.5 (SD 9.0), and the oldest age group had the lowest average cadence (Table 2). Furthermore, women had a higher average cadence compared to men, which was seen for all age groups except the two youngest groups (Table 3). When looking at the four intensity groups, there was a high proportion of participants in the very low-intensity activity group (75.6%) and a low proportion of participants in the high-intensity activity group (4.7%). The oldest age group represented the highest proportion of participants in the very low-intensity activity group and the lowest proportion of participants in the high-intensity activity group (Table 2). Furthermore, there were more women in the very low-intensity group but a slightly higher proportion of men in the low-, moderate-, and high-intensity groups. This was also seen when examining the individual age groups, except for the highest age group (Table 3).