PQQ Supplement Improves Body Awareness After Exhaustive Exercise
Study finds pyrroloquinoline quinone enhances interoception - the ability to sense internal body signals - following intense exercise.
Summary
Researchers tested whether PQQ and NMN supplements could improve interoception - the body's ability to sense internal signals like heartbeat and fatigue - after exhaustive exercise. In a randomized trial of 60 male athletes, participants took either placebo, PQQ (20mg), NMN (300mg), or both supplements before completing a Bruce treadmill test to exhaustion. Only PQQ significantly improved 'body listening' scores, suggesting it may help athletes better perceive internal cues during recovery from intense exercise.
Detailed Summary
Interoception - the nervous system's ability to perceive and interpret internal bodily signals - is crucial for athletes to monitor fatigue and adjust performance during exercise. However, exhaustive exercise can impair this internal awareness through oxidative stress and inflammation. This study investigated whether pyrroloquinoline quinone (PQQ) and nicotinamide mononucleotide (NMN) supplements could protect or enhance interoception following intense exercise.
Researchers conducted a randomized, double-blind, placebo-controlled trial with 60 male physical education students (ages 18-28). Participants were randomly assigned to receive placebo (320mg cornflour), PQQ (20mg + 300mg cornflour), NMN (300mg + 20mg cornflour), or combined PQQ+NMN (20mg + 300mg) one hour before exercise. All participants completed the Bruce treadmill protocol to exhaustion, with interoception measured using validated questionnaires (BPQ and MAIA) before and after exercise.
The study found significant overall improvements in several interoception measures post-exercise: BPQ scores increased from 89.45 to 95.08 (p=0.006), Self-regulation improved from 2.79 to 3.02 (p=0.015), Body Listening rose from 2.36 to 2.76 (p<0.001), and Trusting increased from 2.97 to 3.21 (p=0.031). Crucially, only the Body Listening domain showed a significant group×time interaction (p=0.016), with the PQQ group demonstrating the most substantial improvement (p<0.001).
These findings suggest PQQ supplementation may specifically enhance the ability to actively listen to and focus on internal body signals during recovery from exhaustive exercise. This could have practical implications for athletes seeking to optimize their awareness of internal cues for performance regulation and recovery monitoring. However, the study was limited to young male athletes, and longer-term effects remain unknown.
Key Findings
- PQQ supplementation significantly improved 'Body Listening' interoception scores compared to placebo (p<0.001)
- Overall BPQ interoception scores increased from 89.45 to 95.08 across all groups post-exercise (p=0.006)
- Self-regulation interoception improved from 2.79 to 3.02 following exhaustive exercise (p=0.015)
- Body Listening scores rose from 2.36 to 2.76 after exercise across all participants (p<0.001)
- Trusting in body signals increased from 2.97 to 3.21 post-exercise (p=0.031)
- Only Body Listening showed significant group differences, with PQQ being superior (group×time interaction p=0.016)
- NMN alone and PQQ+NMN combination showed no significant advantages over placebo
Methodology
Randomized, double-blind, placebo-controlled trial with 60 male physical education students (ages 18-28) randomly assigned to four groups (n=15 each). Participants consumed supplements 60 minutes before completing Bruce treadmill protocol to exhaustion. Interoception measured using validated BPQ and MAIA questionnaires at baseline and post-exercise. Statistical analysis used mixed-design ANOVA with significance set at p<0.05.
Study Limitations
Study limited to young male athletes, so results may not generalize to women, older adults, or recreational exercisers. Single-dose acute supplementation protocol doesn't address long-term effects or optimal dosing strategies. Authors noted the need for larger sample sizes and longer intervention periods to confirm findings.
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