## 4 Discussion  
The main finding of this work is that a 10-week supervised exercise intervention produces effects in cardiometabolic risk, NAFLD parameters and physical fitness in sedentary postmenopausal women. It should be noted that, although EX and EX + WB-EMS experienced reductions in their cardiometabolic risk, a slightly higher effect in EX + WB-EMS can be observed. Besides, despite the exigent exexcitation in this study, the CK values indicated the inexistence of rhabdomylysis. Body composition and distribution of the fat tissue experience changes over the years [71]. Mainly, the menopause stage favors fat accumulation. Thus, menopausal women often gain around 10% of their pre-menopause weight [72; 73]. Following the line of the present study, some other research groups have found a prevalence of 80% of overweight and obesity in Spanish postmenopausal women [74; 75; 76]. Therefore, the determination of body composition is an important factor that should not be disregarded. The study of this variable may help in the improvement of medical knowledge in postmenopausal sedentary women. Waist circumference is a predictor of visceral fat located in the abdominal region [77]. Its measurement is an easy and low-cost procedure with relevant importance in population-based studies [78]. Waist circumference shows a high correlation with the majority of metabolic risk factors [78; 79]. Some previous studies assessed the effects of WB-EMS on body composition of untrained old adult men and women finding statistical differences, but showing a high risk of bias because of the different and not comparable treatments applied to the study groups [38; 80; 81; 43; 62; 82; 83; 84]. It impairs their data reliability. In the present study, EX + WB-EMS group did not show significant differences in waist circumference, weight, or IMC compared to the EX group as it happens in other studies where the body composition does not show differences [36; 41; 85; 86]. Many authors have studied the effect of moderate and intense intensity physical activity on blood pressure, obtaining results similar to ours [87]. Arterial hypertension is a chronic or persistent increase in systolic blood pressure (SBP) greater than or equal to 140 mmHg and/or a diastolic blood pressure (DBP) greater than 90 mmHg1. In our work, it is appreciated how these values are not exceeded. Perhaps in future work, it will be \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Outcome** & **Group** & **Week 0** & **Week 10** & **Estimated Mean Difference [95\% CI]** & \(p\) **(Time)** & \(p\) **(Group \(\times\) Time)** \\ \hline Strength right arm (reps) & All & 15.53 \(\pm\) 2.57 & 20.84 \(\pm\) 2.65 & **5.31 [4.24, 6.38]** & \textless{}0.001 & 0.031 \\  & EX + WB-EMS & 14.81 \(\pm\) 2.26 & 21.31 \(\pm\) 3.05 & 6.50 [4.41, 8.59] & & \\  & EX & 16.25 \(\pm\) 2.72 & 20.375 \(\pm\) 2.19 & **4.13 [2.03, 6.22]** & & \\ Strength left arm (reps) & All & 15.78 \(\pm\) 2.46 & 21.25 \(\pm\) 2.89 & **5.47 [4.58, 6.36]** & \textless{}0.001 & 0.018 \\  & EX + WB-EMS & 15.06 \(\pm\) 1.73 & 21.63 \(\pm\) 3.074 & **6.56 [4.82, 8.31]** & & \\  & EX & 16.50 \(\pm\) 2.90 & 20.88 \(\pm\) 2.73 & **4.38 [2.63, 6.12]** & & \\
6 min walk & All & 567.90 \(\pm\) 57.32 & 658.50 \(\pm\) 82.74 & **90.60 [73.96, 107.24]** & \textless{}0.001 & \textless{}0.001 \\  & EX + WB-EMS & 561.78 \(\pm\) 54.58 & 717.31 \(\pm\) 59.91 \# & **155.54 [122.99, 188.08]** & & \\  & EX & 574.03 \(\pm\) 61.09 & 599.688 \(\pm\) 56.41 & **25.66 [ \(-6.88\), 58.21]** & & \\ \hline \hline \end{tabular} Data are presented as mean \(\pm\) SD. WB-EMS: Whole body electromyostimulation. EX + WB-EMS: Voluntary exercise with WB-EMS; EX: Voluntary exercise group. Significant mean differences and \(p\)-values (\(p\leq 0.05\)) are shown in bold. \(\#\)\(p_{Bonferroni}\leq 0.05\) different to EX group values. EX: exercise only group; MD: mean difference; CI: confidence interval, \(p\): \(p\) Value.  
\end{table} 
Table 5: Summary of between-group changes on physical fitness measures.