## 2 Materials and Methods
### Experimental Protocol and Evaluation Plan  
The measurements (Figure 1) were taken at two points in the season (T1: September 2018, week 1 of mesocycle 1 of macrocycle 1, pre-season; T2: January 2019, week 13, mesocycle 1 of macrocycle 2, first competitive break) immediately before a training session. These periods were chosen as it was expected that there would be a substantial variation in the parameters to be monitored [41]. Measurements were performed in the sports hall where players train and compete in the same session, to avoid variations in environmental or biological conditions affecting the results [42]. In volleyball: El Ferial Sports hall--Haro--La Rioja (T1: humidity 42%; temperature 28.1 \({}^{\circ}\)C; T2: humidity 39%; temperature 14.9 \({}^{\circ}\)C. A humidity difference of 3% and temperature difference of 13.2 \({}^{\circ}\)C existed between times). In basketball: Jose Antonio Gasca Municipal Sports Centre--San Sebastian--Guipuzcoa (T1: humidity 71%; 28.7 \({}^{\circ}\)C. T2: humidity 47%; 16.4 \({}^{\circ}\)C. A humidity difference of 42.86% and temperature difference of 12.3 \({}^{\circ}\)C existed between times). For the evaluation, pre-test actions were controlled by determining that no physical exercise was performed within 24 h prior to analysis. Within 4 h prior to the test, no solid or liquid food was to be ingested; only participants maintaining a correct state of \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & **Age (Years)** & **Body Mass (kg)** & **Height (cm)** & **Experience in the Discipline (Years)** & **Years Played at Elite Level** \\ \cline{2-5}  & & **T1** & & **V** & \\ \hline
**V** & 24.138 \(\pm\) 2.78 & 69.882 \(\pm\) 9.28 & 177.091 \(\pm\) 6.50 & 15 \(\pm\) 2.8 & 4.18 \(\pm\) 2.2 \\ \hline
**B** & 26.004 \(\pm\) 5.87 & 77.808 \(\pm\) 12.40 & 178.833 \(\pm\) 6.85 & & \\ \hline  & **T2** & & & **B** & \\ \hline
**V** & 24.472 \(\pm\) 2.77 & 70.073 \(\pm\) 8.97 & & & \\ \hline
**B** & 26.311 \(\pm\) 5.87 & 75.750 \(\pm\) 11.45 & & & \\ \hline \hline \end{tabular} B: basketball; V: volleyball. T1: first moment: T2: second moment.  
\end{table} 
Table 1: Continuous quantitative data. hydration, and having last unirated and/or defecated 30 min prior to data collection, were considered [43]. Kinanthropometry  
Anthropometric data were extracted according to the recommended ISAK techniques. The order of anthropometric data collection was:  
1. Body mass: a standardized method was used and was performed with a SECA scale (SECA(r), Hamburg, Germany) with an ac-precision of 100 g.
2. Height was obtained using a Holtain measuring rod (Holtain(r) Ltd., Dyfed, UK) according to the standard procedure. 3. Skinfolds: were measured in triplicate using a Harpenden plicometer(r). The sum of 8 skinfolds (mm) was calculated (biceps, triceps, subscapular, iliac creta, supraspinal, abdominal, front thigh, and calf). 4. Bone diameters and muscle perimeters: diameters (cm) (humerusbiepicondileus, femur biepicondileus, and biostyloid) and perimeters (cm) (relaxed arm, contracted arm, forearm, wrist, thorax, waist, hip, thigh, calf, ankle, and mid- thigh) were measured with a Lufkin(r) metal tape measure. All were performed under the same conditions and times under the marking and measurement procedures of the International Society for the Advancement of Kinnthropometry (ISAK, 2001). In addition, the same internationally certified anthropometrist (ISAK Level III Certificate #63673929292503670742) took measurements for all participants at both time points. Figure 1: Data collection diagram. Warm-up  
At the time of the sport performance tests, firstly, a standardized warm-up of 20 min was performed to adequately prepare the players for the tests to be performed. The warm-up included 5 min of jogging forwards and backwards, and exercises in waves of jumping on one leg (right and left, forwards and backwards), hip opening and closing, arm circulation, and heel running forwards and backwards.