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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Exerc Sport Sci Rev. 2014 Jan;42(1):37–42. doi: 10.1249/JES.0000000000000002

Figure 2.

Figure 2

Five possible changes in the structure of variance are illustrated in the space of two elemental variables involved in a task similar to the one illustrated in Fig. 1. (A) ΔV remains the same due to proportional changes in VUCM and VORT. (B) ΔV decreases because of VUCM drops more than VORT. (C), (D), and (E) ΔV is increased due to the relative increase of VUCM compared to VORT: (C) VUCM drops less than VORT; (D) VUCM does not change while VORT drops; (E) VUCM and VORT change in opposite directions. Panel E conceptually illustrates our main hypothesis by showing that an increase in variability within the space of elemental variables (caused by an increase in VUCM) is accompanied by a drop in the variability in the performance variable (reflected in low VORT) due to the improved co-variation.