Journal of Obesity / 2014 / Article / Tab 1

Research Article

Associations between Aspects of Friendship Networks, Physical Activity, and Sedentary Behaviour among Adolescents

Table 1

Descriptive statistics for the sociodemographic characteristics, general perceived social support from friends, physical activity, and sedentary behaviour for boys ().

Physical activitySedentary behaviour
Sufficiently active
(≥60 min of MVPA every day)
Insufficiently active
(≥60 min of MVPA on <7 days/week)
High sedentary
(>2 hrs/day of sedentary behaviour)
Low sedentary
(≤2 hrs/day of sedentary behaviour)

Sociodemographic characteristics
 Age [ (%)]
  12 years and younger37 (17.2)178 (82.8)157 (73.0)58 (27.0)b
  13 years31 (19.0)132 (81.0)132 (81.0)31 (19.0)
  14 years and older16 (10.8)132 (89.2)132 (89.2)16 (10.8)b
 Family affluence [ (%)]
  Low11 (10.7)92 (89.3)a80 (77.7)23 (22.3)
  Medium32 (14.2)194 (85.8)177 (78.3)49 (21.7)
  High41 (20.8)156 (79.2)a164 (83.2)33 (16.8)
 Length of time in Canada [ (%)]
  More than 5 years6 (9.0)61 (91.0)56 (83.6)11 (16.4)
  5 years or less78 (17.0)381 (83.0)365 (79.5)94 (20.5)
 Number of times moved last year [ (%)]
  Did not move74 (17.2)356 (82.8)340 (79.1)90 (20.9)
  Moved at least once10 (10.4)86 (89.6)81 (84.4)15 (15.6)
Social network characteristics
 Incoming close friend nominations [ (%)]
  Received ≥1 nomination87 (16.1)453 (83.9)432 (80.0)108 (20.0)
  Received no nominations0 (0.0)9 (100.0)5 (55.6)4 (44.4)
 Proportion active close friends [mean (SD)]0.40 (0.4)c0.30 (0.3)c0.30 (0.3)d0.38 (0.3)d
 Proportion sedentary close friends [mean (SD)]0.67 (0.3)0.72 (0.3)0.72 (0.3)0.68 (0.3)
 Betweenness centrality [mean (SD)]3.63 (4.2)3.07 (4.2)3.14 (4.3)3.26 (3.9)
 Popularity (incoming nominations) [mean (SD)]7.08 (3.6)6.98 (3.8)6.89 (3.7)7.40 (4.0)
 Clique member [ (%)]
  Not a member35 (18.0)155 (82.0)156 (82.1)34 (17.9)
  Member49 (14.6)287 (85.4)265 (78.9)71 (21.1)
Perceived support from friends [mean (SD)]f3.15 (0.7)3.28 (0.6)3.27 (0.6)3.20 (0.6)
Total boys [ (%)]84 (16.0)442 (84.0)421 (80.0)105 (20.0)

Significant () chi-square and Bonferroni-adjusted pair-wise comparison (-test); c,dsignificant () difference in means (Mann-Whitney -test), faverage general perceived social support index: 1 = received support none of the time to 4 = received support all of the time in increments of 0.25, MVPA: moderate-to-vigorous intensity physical activity, SD: standard deviation.