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Natural bodybuilding without low energy availability: A case study of a “pro-metabolic” dietary approach Cover

Natural bodybuilding without low energy availability: A case study of a “pro-metabolic” dietary approach

Open Access
|Oct 2026
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Figures & tables

Figure 1

Nutritional value of the diet during the adaptation phase, the preparation phase and the recovery phase in a 26-year-old natural male bodybuilder following a “pro-metabolic diet”

Source: Authors’ contribution.

Figure 2

Selected parameters of body composition and heart rate during the adaptation phase, the preparation phase and the recovery phase in a 26-year-old natural male bodybuilder following a “pro-metabolic diet”

Source: Authors’ contribution.

Table 1

Selected strength parameters via 1 RM at the start of the-adaptation-phase, during the competition phase and at the end of the recovery phase

AdaptationPreparationRecovery
Squat (SQ)kg180163165
Deadlift (DL)kg258213200
Bench Press (BP)kg155139135

1RM – One repetition maximum.

Source: Authors’ contribution.

Table 2

Selected biochemical parameters in blood at the start of the adaptation phase, during the competition phase, and at the end of the recovery phase

AdaptationPreparationRecoveryReference range
Creatine kinaseU/l3514663900–190
Cortisolnmol/l709722679136–633
Testosteronenmol/l12.818.617.28.6–29.0
Anabolic-catabolic index*—1.82.62.5>2.4

[i] *The anabolic–catabolic balance index was calculated as follows: testosterone/cortisol × 102.

Source: Authors’ contribution.

Figure 3

Well-being and stress level during the adaptation phase, the preparation phase, and the recovery phase in a 26-year-old natural male bodybuilder following a “pro-metabolic diet”

Source: Authors’ contribution.

Language: English
Page range: 278 - 286
Submitted on: Aug 14, 2026
Accepted on: Sep 3, 2026
Published on: Oct 27, 2026
Published by: University of Physical Education in Warsaw
In partnership with: Paradigm Publishing Services

© 2026 Katarzyna Łożyńska, Joanna Kaluza, Olga Surała, published by University of Physical Education in Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.