Metabolic dysfunction and obesity represent pressing global healthcare challenges that necessitate targeted lifestyle therapies. Specifically, exercise physiologists emphasize that acute resistance exercise stimulates potent neuroendocrine responses that improve systemic cardiometabolic health. Recently, researchers identified asprosin as a pivotal fasting-induced hormone that drives hepatic glucose release and stimulates appetite. Consequently, non-pharmacological interventions that suppress circulating asprosin offer substantial therapeutic promise. Furthermore, a rigorous randomized crossover study evaluated how differing mechanical loads alter asprosin, glycemic control, and appetite regulation in women.

The Endocrine Role of Asprosin in Metabolic Regulation

Asprosin originates from the cleavage of profibrillin-1 and circulates primarily from white adipose tissue during caloric deprivation. Once secreted, asprosin binds directly to surface receptors on hepatocytes, thereby activating cyclic adenosine monophosphate signaling pathways. This intracellular cascade rapidly accelerates hepatic gluconeogenesis and glycogenolysis, which subsequently elevates systemic blood glucose levels. In addition, asprosin crosses the blood-brain barrier to modulate key hypothalamic neurocircuits. Within the arcuate nucleus, this hormone stimulates orexigenic agouti-related peptide neurons while inhibiting anorexigenic pro-opiomelanocortin pathways. Therefore, elevated circulating asprosin directly stimulates hunger and drives increased caloric consumption.

Furthermore, patients with obesity and type 2 diabetes display significantly elevated resting asprosin concentrations. Clinical investigations demonstrate that hyperasprosinemia correlates strongly with worsening insulin resistance, visceral adiposity, and hyperinsulinemia. Because conventional pharmacotherapies rarely target this specific adipokine axis, physical exercise represents an indispensable clinical intervention. Aerobic training reduces circulating asprosin over prolonged periods; however, the impact of mechanical loading during strength training remains under active investigation. Consequently, examining how acute resistance exercise modulates this glucogenic peptide provides crucial physiological insights for metabolic disease management.

Investigating Acute Resistance Exercise and Hormonal Dynamics

To evaluate hormonal responses across different mechanical loads, investigators recruited thirty-two women, including seventeen participants with obesity and fifteen non-obese controls. Each participant completed two volume-equated acute resistance exercise sessions using a counterbalanced crossover design. Specifically, the high-intensity trial required lifting loads at eighty percent of one-repetition maximum, whereas the low-intensity condition utilized forty percent. Furthermore, the researchers instituted a four-week washout period between sessions to eliminate potential carryover effects. Investigators drew venous blood samples before and immediately after each exercise bout to assess circulating asprosin, glucose, and insulin concentrations.

The trial demonstrated that serum asprosin levels declined significantly following physical exertion in both groups. However, the high-intensity condition elicited a substantially greater postexercise reduction than the low-intensity trial. Importantly, this pronounced intensity-dependent suppression occurred in both obese and non-obese women. Thus, heavier mechanical strain appears to accelerate asprosin clearance while transiently dampening its secretion from adipocytes. Moreover, these findings indicate that intense muscular contractions trigger favorable endocrine responses irrespective of baseline body mass index. Consequently, high-intensity strength training offers a uniquely effective stimulus for attenuating this orexigenic peptide.

Glycemic Control and Insulin Sensitivity Outcomes

Beyond modifying adipokine secretion, acute resistance exercise induced remarkable improvements in short-term carbohydrate metabolism. In both cohorts, circulating insulin concentrations and homeostatic model assessment of insulin resistance values decreased significantly postexercise. Furthermore, the eighty percent one-repetition maximum protocol produced substantially greater reductions in circulating insulin than the low-load session. Although circulating blood glucose levels remained stable, the marked drop in insulin reflects enhanced peripheral insulin sensitivity. Therefore, contracting skeletal muscle tissue absorbed glucose efficiently through insulin-independent pathways while placing lower secretory demands on pancreatic beta cells.

Mechanistically, vigorous muscular contractions stimulate the rapid translocation of glucose transporter type four proteins to sarcolemmal membranes. Consequently, this contraction-mediated glucose disposal bypasses defective insulin signaling cascades, directly alleviating peripheral resistance. In addition, high-intensity resistance lifting promotes extensive glycogen breakdown within type two motor units. This substantial intramuscular glycogen depletion creates an energetic sink that enhances postexercise glucose uptake. Because women with obesity frequently experience impaired insulin action, these acute metabolic improvements provide meaningful clinical benefits. Ultimately, prescribing vigorous resistance training optimizes immediate glycemic dynamics in patients managing insulin resistance.

Appetite Sensations and Postexercise Energy Intake

Nutritional adherence often poses a major barrier during obesity management because vigorous exercise might provoke compensatory overeating. Nevertheless, the study revealed that acute resistance exercise successfully suppressed subjective appetite ratings immediately after training. Specifically, participants reported significantly reduced hunger scores and lower prospective food consumption on visual analogue scales. Furthermore, the high-intensity eighty percent trial produced a more pronounced suppression of appetite sensations than the low-intensity condition. This transient appetite blunting aligns closely with the marked postexercise reduction observed in circulating asprosin levels.

Interestingly, researchers offered participants an ad-libitum buffet meal one hour postexercise to quantify actual caloric intake. The nutritional data confirmed that absolute energy consumption did not differ between the high-intensity and low-intensity sessions. Therefore, despite performing heavier mechanical work and expending more energy, women did not experience compensatory hyperphagia after vigorous lifting. Moreover, participants maintained stable macronutrient distributions across both experimental conditions. Consequently, clinicians can reassure patients that high-load resistance training will not trigger uncontrolled post-workout eating episodes. Thus, this exercise modality fosters an acute energy deficit while simultaneously dampening orexigenic drive.

Translating Resistance Training Intensity into Clinical Practice

These findings deliver actionable insights for primary care physicians, endocrinologists, and medical fitness specialists designing exercise prescriptions. Traditionally, clinicians recommended low-intensity exercise to individuals with obesity due to joint concerns and lower initial fitness. However, this clinical trial confirms that higher mechanical loads provide distinct endocrine and metabolic advantages over volume-equated low-load regimens. Specifically, lifting at eighty percent of one-repetition maximum achieves superior reductions in circulating asprosin, greater insulin-sensitizing effects, and enhanced appetite suppression. Therefore, structured progressive resistance training should feature prominently in comprehensive metabolic rehabilitation programs.

Importantly, clinicians must individualize resistance exercise prescriptions to preserve patient safety and encourage long-term adherence. Patients should initially undergo functional movement screenings and structured familiarization sessions under qualified professional supervision. Clinicians can progressively titrate lifting loads toward higher intensities as lifting technique and musculoskeletal conditioning improve over time. Furthermore, pairing high-load resistance training with balanced dietary interventions preserves metabolically active lean muscle during weight loss. Ultimately, recommending intensive resistance training empowers women with obesity to optimize metabolic hormones, improve glycemic control, and manage appetite effectively.

How does acute resistance exercise influence circulating asprosin levels in women with obesity?

Acute resistance exercise significantly reduces circulating asprosin concentrations in women with and without obesity. Furthermore, higher exercise intensity elicits a more pronounced reduction than lower-intensity training. Because asprosin acts as an orexigenic and glucogenic adipokine that stimulates hepatic glucose release, lowering its circulating levels helps normalize glucose homeostasis. Consequently, high-intensity resistance training serves as an effective lifestyle strategy to suppress this metabolic hormone and mitigate systemic insulin resistance.

Does high-intensity resistance training cause compensatory post-exercise overeating?

No, high-intensity resistance training does not provoke compensatory caloric overconsumption. Clinical evidence demonstrates that lifting heavier loads transiently suppresses subjective hunger sensations and prospective food consumption more effectively than low-intensity workouts. Furthermore, postexercise ad-libitum energy intake measurements confirm that individuals consume comparable caloric quantities regardless of lifting intensity. Therefore, vigorous strength training creates a favorable negative energy balance without driving undesirable post-workout hyperphagia in women managing metabolic dysfunction and obesity.

Why is lifting intensity crucial for improving acute insulin sensitivity?

Exercise intensity directly governs motor unit recruitment and intracellular glycogen utilization during strength sessions. Specifically, high-intensity resistance exercise at eighty percent of one-repetition maximum recruits glycolytic fast-twitch muscle fibers, stimulating non-insulin-dependent glucose uptake through sarcolemmal GLUT4 translocation. Consequently, this contraction-mediated mechanism significantly lowers circulating insulin levels and HOMA-IR values postexercise. Therefore, prescribing heavier resistance loads produces superior short-term improvements in systemic insulin sensitivity compared to low-load muscular conditioning in insulin-resistant populations.

Disclaimer: This content is for informational and educational purposes only. It is not intended to provide medical advice or to be used for the diagnosis or treatment of any medical condition or symptom, and should never be used as a substitute for professional medical advice, diagnosis, or treatment. Qualified physicians should evaluate patients and formulate individual treatment decisions. Refer to the latest local and national guidelines for clinical practice.

References

1. Choi JI et al. Effects of acute resistance exercise intensity on asprosin, glycemic markers and appetite responses in obese and non-obese women. J Sports Med Phys Fitness. 2026 Nov 04. doi: 10.23736/S0022-4707.26.18014-1. PMID: 42980652.
2. Romere C, Duerrschmid C, Bournat J, et al. Asprosin, a fasting-induced glucogenic protein hormone. Cell. 2016;165(3):566-579.
3. Mousavi SM, Haghighi AH, Mohammadi-Darestani M, et al. Systematic review and meta-analysis of the effect of exercise training on asprosin in randomized controlled trials. Clin Nutr ESPEN. 2024;60:112-120.