Research Article

Muscle Coactivation during Stability Exercises in Rhythmic Gymnastics: A Two-Case Study

Table 2

Mean relative values and standard deviation of the anterior (aF) and posterior (pF) GRF and medial (mF) and lateral (lF) GRF of gymnast A and B in balance exercises.

GRFGymnast AGymnast B
Side split with hand supportRing with hand supportBack split without hand supportSide split with hand supportRing with hand supportBack split without hand support

aF (% BW)1.15 ± 0.760.64 ± 0.761.06 ± 0.460.55 ± 0.210.48 ± 0.210.23 ± 0.04c
pF (% BW)1.02 ± 0.461.09 ± 0.670.86 ± 0.260.71 ± 0.172.39 ± 0.83a1.82 ± 0.27a,c
mF (% BW)1.85 ± 1.431.18 ± 0.261.02 ± 0.710.79 ± 0.261.37 ± 0.150.66 ± 0.21b
lF (% BW)0.39 ± 0.341.15 ± 0.700.89 ± 0.360.72 ± 0.280.54 ± 0.300.79 ± 0.17

aStatistically significant difference as compared with the SSpS exercise. bStatistically significant difference as compared with the RS exercise. cStatistically significant between gymnasts A and B.