On February 1st, 2026, the city of Cesena hosted one of the most interesting Italian initiatives dedicated to the science of physical preparation: the Summit of Strength, a Strong First event sponsored by SIDEA that brought together movement professionals, athletic trainers, researchers, and fitness operators.
Among the most significant moments of the day was the conference by Dr. Marco Neri, vice president and member of the scientific committee of the Italian Fitness Federation, as well as a lecturer and researcher in the field of nutraceuticals and exercise physiology. His presentation, titled “Overtraining, Recovery, and Supplements,” addressed one of the most complex and often misunderstood topics in modern training with a rigorously scientific approach: the relationship between workload, recovery, and physiological adaptation.
The event saw SIDEA at the forefront of organizing, promoting, and sponsoring the initiative, helping to create a space for dialogue between scientific research and practical application in the world of physical preparation.
When Training Becomes Too Much: The Physiology of Overtraining
One of the central points of the conference was the scientific definition of Overtraining Syndrome.
Overtraining is defined as an accumulation of stress from training and external factors—nutrition, sleep, psychological stress—that leads to a reduction in performance accompanied by specific physiological and psychological symptoms.
Dr. Neri clarified the fundamental distinction between two often-confused conditions:
- Overreaching: A temporary state of fatigue that requires days or weeks of recovery.
- Overtraining: A more complex pathological state that can require months of recovery.
According to scientific literature, the most reliable signal for identifying this condition remains a decline in sports performance, often accompanied by physiological, immunological, and psychological signs.
Among the most frequent symptoms are:
- chronic fatigue and slowed recovery
- loss of coordination and movement efficiency
- insomnia and appetite disturbances
- emotional instability and reduced motivation
- increased susceptibility to infections.
These phenomena are not limited to competitive sports: research shows how the accumulation of physical and mental stress activates the hypothalamic-pituitary-adrenal axis, increasing cortisol levels and altering cognitive, immune, and metabolic functions.
The Hormonal System Under Stress
A particularly interesting part of the presentation concerned the endocrine effects of overtraining.
Chronic overload indeed leads to an alteration of the hormonal balance, with a progressive predominance of catabolic hormones over anabolic ones. Specifically:
- persistent increase in cortisol
- reduction in free testosterone
- alterations of the hypothalamic axis.
This imbalance results in a metabolic environment less favorable to muscle growth and recovery.
Dr. Neri also highlighted the role of certain physiological mediators produced by the muscle itself, including:
- Irisin, involved in metabolic regulation and bone health
- MGF (Mechano Growth Factor), an isoform of IGF-1 that stimulates muscle regeneration.
An excess of mechanical stimulus can reduce the production of these molecules, limiting the muscle’s plastic adaptation processes.
Immune System, Microbiota, and Metabolic Stress
Another aspect that emerged from the conference concerns the impact of excessive training on the immune system.
Numerous studies indicate that chronic stress conditions can lead to:
- a reduction in immunoglobulins
- an increase in inflammatory markers
- a higher risk of respiratory infections.
Particularly interesting was the reference to the so-called gut-muscle axis.
According to recent research, excessive stress and a non-optimal diet can alter the gut microbiota, with consequences for:
- muscle protein synthesis
- mitochondrial function
- immune regulation.
This confirms how today’s training must be considered within a complex biological system, where nutrition, recovery, and workload continuously interact.
Sleep: The True Laboratory of Adaptation
One of the strongest messages of the conference concerned the importance of sleep in physiological recovery.
During sleep, key processes for performance take place:
- release of growth hormone (GH)
- restoration of energy reserves
- consolidation of motor memory
- reduction of psychological stress.
Insufficient sleep quality is associated not only with a decline in sports performance but also with an increased risk of metabolic and cardiovascular diseases.
Even simple strategies, like a 20-40 minute power nap, can help improve clarity, memory, and reaction time during the day.
HRV: The New Indicator of Recovery Status
One of the most technical parts of the presentation concerned the use of Heart Rate Variability (HRV) as a tool for monitoring the physiological state of athletes.
HRV measures the variability of the intervals between heartbeats and reflects the balance between the sympathetic and parasympathetic nervous systems.
High values generally indicate:
- greater ability to adapt to stress
- better autonomic recovery.
A persistent drop in HRV, on the other hand, can be an early sign of overtraining, especially when associated with:
- an increase in resting heart rate
- worsening sleep quality
- a decline in performance.
Daily monitoring, integrated with subjective and biological parameters, therefore allows for the scientific personalization of training load.
The Role of Nutritional Supplementation
The final part of the conference addressed the topic of supplements as a support for recovery, always within the context of an approach based on adequate nutrition and rest.
Among the strategies mentioned:
Muscle Support
- whey protein
- essential amino acids
Joint Support
- collagen
- vitamin C
- MSM
- hyaluronic acid
Stress Management
- phosphatidylserine
- adaptogens like ashwagandha and rhodiola
Sleep Quality
- magnesium
- calcium
- melatonin or GABA in specific cases.
Particular attention was also given to the possible role of probiotics in modulating the gut-muscle axis, contributing to the management of systemic stress.
A Bridge Between Science and Practice
The Summit of Strength in Cesena demonstrated how the world of physical preparation is evolving towards an increasingly scientific and multidisciplinary approach.
Dr. Marco Neri’s conference highlighted a key concept:
Performance depends not only on how much you train, but on how well you recover.
Training, recovery, nutrition, and physiological monitoring now represent the pillars of modern preparation.
In this context, SIDEA’s role in organizing and supporting the event helped to strengthen the dialogue between scientific research, technology, and practical application in the world of fitness and athletic training.
This dialogue, as demonstrated by this summit, represents one of the most promising paths for the future of training science.