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<p>Nutritional strategies are critical for optimizing soccer players' performance and body composition. Spirulina, a protein-rich plant-based supplement, and probiotics offer individual benefits. However, their combined effects remain underexplored. This study investigated the effects of co-supplementation with spirulina and probiotics on body composition, isokinetic, isometric strength, and performance metrics in male soccer players. In a double-blind, placebo-controlled trial, forty soccer players were randomly assigned to four groups: placebo (PLA), probiotics (PRO), spirulina (SPI), and combined probiotics-spirulina (PRO + SPI). The PRO group received two probiotic capsules (a total dose of 4.5 × 1011&#xa0;CFU) daily, with breakfast and dinner. The SPI group consumed two 1-g spirulina tablets twice daily (2&#xa0;g total), with breakfast and dinner. The PRO + SPI group received both supplements in the same dosing regimen, while the PLA group consumed starch-based placebo capsules. Over eight weeks, participants followed identical training regimens. Pre- and post-intervention assessments included body composition (weight, BMI, fat percentage, fat weight, muscle weight), performance metrics (vertical jump, agility, speed, anaerobic sprint tests), and isokinetic and isometric knee strength tests. Statistical analyses utilized repeated measures and Bonferroni post-hoc tests. The PRO + SPI group demonstrated more significant reductions in weight (<i>P</i> = 0.012) and fat weight (<i>P</i> = 0.001) compared to the PLA group, while the SPI group showed a significant reduction in fat percentage (<i>P</i> = 0.034). Agility scores improved significantly in the PRO + SPI group compared to the PLA (P = 0.001) and SPI (<i>P</i> = 0.004) groups. Isokinetic performance metrics, including average power during knee extension at 60°/s and 180°/s, improved significantly in the PRO + SPI group compared to the PLA group (<i>P</i> = 0.018 and <i>P</i> = 0.009, respectively). Similarly, the PRO and SPI groups outperformed the PLA group in isokinetic measures such as absolute peak torque at 60°/s (<i>P</i> = 0.032) and 180°/s (<i>P</i> = 0.006). Also, maximum voluntary isometric contraction (MVIC) improved significantly in the PRO and SPI groups compared to the PLA group (<i>P</i> = 0.001 for both). From gut to skeletal muscle, spirulina, and probiotic co-supplementation significantly enhanced body composition, reduced weight and fat mass, and improved agility and isokinetic strength compared to placebo or individual supplementation. These results emphasize the synergistic potential of this nutritional strategy for optimizing athletic performance and recovery, warranting further investigation across diverse athletic populations.</p>

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From Gut to Skeletal Muscle: Synergistic Effects of Probiotics and Spirulina Supplementation on Soccer Players’ Performance and Body Composition

  • 期刊论文

  • 发表日期：

    2025年5月9日

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  • Afrooz Samsamy Pour,
  • Mohammad Hemmatinafar,
  • Maryam Koushkie Jahromi,
  • Farhad Daryanoosh,
  • Babak Imanian

摘要

Nutritional strategies are critical for optimizing soccer players' performance and body composition. Spirulina, a protein-rich plant-based supplement, and probiotics offer individual benefits. However, their combined effects remain underexplored. This study investigated the effects of co-supplementation with spirulina and probiotics on body composition, isokinetic, isometric strength, and performance metrics in male soccer players. In a double-blind, placebo-controlled trial, forty soccer players were randomly assigned to four groups: placebo (PLA), probiotics (PRO), spirulina (SPI), and combined probiotics-spirulina (PRO + SPI). The PRO group received two probiotic capsules (a total dose of 4.5 × 1011 CFU) daily, with breakfast and dinner. The SPI group consumed two 1-g spirulina tablets twice daily (2 g total), with breakfast and dinner. The PRO + SPI group received both supplements in the same dosing regimen, while the PLA group consumed starch-based placebo capsules. Over eight weeks, participants followed identical training regimens. Pre- and post-intervention assessments included body composition (weight, BMI, fat percentage, fat weight, muscle weight), performance metrics (vertical jump, agility, speed, anaerobic sprint tests), and isokinetic and isometric knee strength tests. Statistical analyses utilized repeated measures and Bonferroni post-hoc tests. The PRO + SPI group demonstrated more significant reductions in weight (P = 0.012) and fat weight (P = 0.001) compared to the PLA group, while the SPI group showed a significant reduction in fat percentage (P = 0.034). Agility scores improved significantly in the PRO + SPI group compared to the PLA (P = 0.001) and SPI (P = 0.004) groups. Isokinetic performance metrics, including average power during knee extension at 60°/s and 180°/s, improved significantly in the PRO + SPI group compared to the PLA group (P = 0.018 and P = 0.009, respectively). Similarly, the PRO and SPI groups outperformed the PLA group in isokinetic measures such as absolute peak torque at 60°/s (P = 0.032) and 180°/s (P = 0.006). Also, maximum voluntary isometric contraction (MVIC) improved significantly in the PRO and SPI groups compared to the PLA group (P = 0.001 for both). From gut to skeletal muscle, spirulina, and probiotic co-supplementation significantly enhanced body composition, reduced weight and fat mass, and improved agility and isokinetic strength compared to placebo or individual supplementation. These results emphasize the synergistic potential of this nutritional strategy for optimizing athletic performance and recovery, warranting further investigation across diverse athletic populations.