## 3 Results
### Dietary and Nutrient Intakes During the Macrocycle  
The total dietary intake of the athlete fluctuated significantly during the macrocycle, based on the activity levels. Table 5 details the total energy intake of the swimmer on rest days, without physical activity, days with a single swimming session, and days with two swimming workouts. The mean energy intake during rest days was 2910 \(\pm\) 379 kcal/day, which is in line with the measured resting metabolic rate values. On days with one training session, the mean energy intake was 3805 \(\pm\) 389 kcal/day, while on days with two swimming sessions, it increased to 4238 \(\pm\) 562 kcal/day. These findings are consistent with the anticipated rise in physiological needs, as physical activity intensifies and becomes more demanding. \begin{table}
\begin{tabular}{c c c c c c c}  & **Weight (kg)** & **Body Fat (\%)** & **FM (kg)** & **FFM (kg)** & \multicolumn{2}{c}{**Sum of 8 Skinfolds**} & **RMR** \\  & & & & & **(mm)** & **(kcal/Day)** \\ \hline Mean & 79.26 & 7.75 & 6.14 & 73.12 & 61.46 & 2905.75 \\ Standard Error & 0.48 & 0.16 & 0.15 & 0.36 & 1.85 & 144.25 \\ Median & 80.00 & 7.80 & 6.20 & 73.92 & 62.00 & 3078.00 \\ Standard Dev. & 1.72 & 0.57 & 0.56 & 1.30 & 6.66 & 407.99 \\ Range & 5.20 & 1.90 & 1.67 & 3.89 & 22.00 & 1133.00 \\ Minimum & 76.00 & 6.90 & 5.31 & 70.61 & 52.00 & 2328.00 \\ Maximum & 81.20 & 8.80 & 6.98 & 74.50 & 74.00 & 3461.00 \\ Confidence Level (95.0\%) & 1.04 & 0.35 & 0.34 & 0.79 & 4.03 & 341.09 \\ CV & 2\% & 7\% & 9\% & 2\% & 11\% & 14\% \\ \hline \end{tabular}
\end{table} 
Table 4: Status of anthropometric, body composition, and RMR values. Figure 1: Variations in RMR testing during the season. The total energy intake of the athlete has consistently increased in response to the higher training volume, which is a normal adaptation, considering the higher energy demands of more frequent, longer, and/or more intense swimming training sessions [2]. Thus, the findings regarding the daily energy intake of the individual support the energy requirements of the athlete during sessions, as swimming workouts are expected to record energy demands of ~10 kcal/kg/h [34]. The data highlight that the proposed energy intake increases with the training volume, as notable variations in energy consumption were observed across the days with differing training loads. An overview of macronutrient intake is provided in Table 4, detailing the daily consumption of carbohydrates, proteins, and fats. These data allow for an analysis of macronutrient distribution across days with varying training loads. As training for longer distance events in swimming requires extended sessions due to the increased volume of swimming blocks, muscle glycogen stores will be depleted [10], and, therefore, daily carbohydrate intake should be periodized to satisfy the increased fuel demands and ensure optimal performance during key sessions. Therefore, considering that moderate-to-high-intensity training sessions require a daily carbohydrates intake of 6-8 g/kg/day, our findings align with the literature [2], with the athlete's mean intake reaching 568.99 \(\pm\) 63.35 g of CHO per day. Moreover, when several swimming sessions took place in the same day, the daily CHO requirements increased to support these more demanding sessions, with mean intake values of 668.13 \(\pm\) 119.32 g. These findings were expected, since the physiological requirements of training are higher when multiple or high-volume sessions are performed. (Table 6). Regarding the highest variability in carbohydrate (CHO) intake, this was observed during the rest days of the athlete, when a lower amount of CHO was provided. This is evident from the coefficient of variation of 19%. The mean daily CHO intake during rest days was 296.44 \(\pm\) 63.35 g, which still reflects the increased energy needs required to support the refueling and recovery process of the athlete, even on days without physical activity [35].