Clinical Study

Fitness Effects of 10-Month Frequent Low-Volume Ball Game Training or Interval Running for 8–10-Year-Old School Children

Table 2

Body composition and functional capacity measurements for the control group (CON) and the two intervention groups performing  min per week of small-sided ball games (SSG) and interval running (IR) before (pre) and after (post) the 10-month intervention period.

SSGIRCON
PrePostPre10 monthsPre10 months

Balance (falls/min)19.6 (±8.1)18.0 (±7.0)20.4 (±8.2)18.5 (±6.0)20.8 (±8.5)20.7 (±7.7)
Jump distance (% of pre)100104 (±12)100103 (±12)100100 (±12)
20 m sprint (s)4.24 (±0.34)4.22 (±0.32)4.48 (±0.33)4.23 (±0.24)4.41 (±0.34)4.31 (±0.33)
Coordination wall time (s)66 (±10)52 (±11)66 (±12)56 (±10)67 (±16)57 (±11)
YYIR1C (m)682 (±450)845 (±490)647 (±450)820 (±480)712 (±411)838 (±447)
YYIR1(% of )91.3 (±4.5)89.6 (±4.2)91.1 (±4.4)88.5 (±4.1)91.2 (±4.5)90.0 (±4.4)
BMD (g/cm2)
 Whole body0.89 (±0.05)0.91 (±0.06)0.90 (±0.05)0.92 (±0.05)0.88 (±0.05)0.90 (±0.05)
 Leg0.87 (±0.07)0.91 (±0.08)0.88 (±0.07)0.92 (±0.07)0.86 (±0.07)0.90 (±0.08)
BMC (g)
 Whole body1173 (±166)1281 (±181)1220 (±164)1316 (±177)1169 (±186)1277 (±204)
 Leg405 (±70)456 (±80)421 (±75)473 (±85)400 (±82)453 (±93)
Lean mass (kg)
 Whole body23.00 (±2.58)24.79 (±2.90)24.10 (±2.69)25.50 (±2.77)23.39 (±2.64)25.02 (±2.88)
 Leg7.55 (±0.94)8.15 (±1.13)7.99 (±1.04)8.65 (±1.10)7.64 (±0.99)8.37 (±1.15)

Data are presented as means ± SD. denotes difference in change scores compared to CON; .
BMD, bone mineral density; BMC, bone mineral content; YYIR1C, Yo-Yo Intermittent Recovery Level 1 Children’s test.