Table 3 Details of measurement of physical activity
From: Single parent status and children’s objectively measured level of physical activity
Studies | Accelerometer model | Level of measurement used for calculation of effect size | Number of days (and hours) with PA assessment | Threshold, (counts.min−1 or counts.hour−1) | Cut-point used to define outcome | Percentage with valid measurements (%) | |
|---|---|---|---|---|---|---|---|
Lower | Upper | ||||||
Bagley et.al. [27] | Manufacturing Technology Inc., Actigraph Model, AM7164-2.2C, USA | MVPA | 8 days, day 2–6 included. At least four weekdays and one weekend day. At least 10 h per day | <10,000 | >20,000,000 | 3–5.9 METSa counts.min−1 (1017–3696) | 97 |
Bradley et al. [28] | Computer Science and Applications (CSA), Inc., Shalimar, FL | MVPA | 7 days, included for 4 days if non-zero counts from 5 a.m., and 60 min zero after 9 p.m., or 30 min zero after 10 p.m., or last zero count before 12 p.m. | I/N | 3+ METSa counts.min−1 (1017–3696) | 75 | |
Hesketh et al. [5] | Manufacturing Technology Inc. accelerometer, Model 7164 | MVPA | 6 days (24-h periods) included if complete data for at least 4 days | <10,000 | >20,000,000 | 3+ METSa counts.min−1 (1017–3696) | 89 |
Sallis et.al. [30] | Computer Science and Applications (CSA), Inc., Shalimar, FL model 7164 | VPA | 7 days complete data included if no negative counts or “no long periods with zero counts” | I/N | 6+ METSa | I/N | |
Sallis et al. [29] | Caltrac accelerometer (Hemokinetics, Inc., Madison, WI) | Mean total counts | From end of school day I to beginning of school day II, next morning | I/N | counts.hour−1 | 76 | |
Sallis et.al. [8]b | Caltrac accelerometer (Hemokinetics, Inc., Madison, WI) | Mean total counts | From end of school day I to beginning of school day II, next morning or during a weekend (Friday to Monday morning)c | I/N | I/N | 5 | |
Eiberg Hansen et al. [22], CoSCIS | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 4 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | - | >1951 counts.min−1 | 69.7 |
Riddoch et al. [20], EYHS Denmark, first cohort | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 5 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | - | ≥2000 counts.min−1 | 60 |
McMinn et al. [26], EYHS Denmark, second cohort | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 5 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | >20,000,000 | ≥2000 counts.min−1 | 85 |
Riddoch et al. [20], EYHS Estonia | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 5 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | - | ≥2000 counts.min−1 | 52 |
Riddoch et al. [20], EYHS Portugal | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 5 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | - | ≥2000 counts.min−1 | 44 |
Riddoch et al. [20], EYHS Norway | MTI Actigraph (Manufacturing Technology Inc., Fort Walton Beach, Florida, USA) | MVPA | 5 days, including one weekend day, included if ≥600 min/day of activity for ≥3 days, and activity between 6 a.m. and 12 p.m. for at least 10 h. | <10,000 | - | ≥2000 counts.min−1 | 66 |