Nordic Walking at Maximal Fat Oxidation Intensity Decreases Circulating Asprosin and Visceral Obesity in Women With Metabolic Disorders

Malgorzata Kantorowicz; Jadwiga Szymura; Zbigniew Szygula; Justyna Kusmierczyk; Marcin Maciejczyk; Magdalena Wiecek

doi:10.3389/fphys.2021.726783

Nordic Walking at Maximal Fat Oxidation Intensity Decreases Circulating Asprosin and Visceral Obesity in Women With Metabolic Disorders

Front Physiol. 2021 Sep 3:12:726783. doi: 10.3389/fphys.2021.726783. eCollection 2021.

Authors

Malgorzata Kantorowicz¹, Jadwiga Szymura², Zbigniew Szygula³, Justyna Kusmierczyk⁴, Marcin Maciejczyk⁴, Magdalena Wiecek⁴

Affiliations

¹ Ph.D. Studies, Faculty of Physical Education and Sport, University School of Physical Education in Kraków, Kraków, Poland.
² Department of Clinical Rehabilitation, Faculty of Motor Rehabilitation, University School of Physical Education in Kraków, Kraków, Poland.
³ Department of Sports Medicine and Human Nutrition, Faculty of Physical Education and Sport, Institute of Biomedical Sciences, University School of Physical Education in Kraków, Kraków, Poland.
⁴ Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, University School of Physical Education in Kraków, Kraków, Poland.

Abstract

Objective: Excess visceral adipose tissue is associated with insulin resistance and other metabolic disorders, including deregulation of adipokine secretion, which may be corrected by aerobic exercise training. Asprosin is a novel adipokine responsible for the regulation of appetite and the release of glucose from the liver, and its levels are pathologically elevated in obesity. The aim of the study was to evaluate the effects of 8-week Nordic walking (NW) training at maximal fat oxidation intensity (FAT _max ) on changes in body mass, as well as those in insulin resistance and asprosin levels among young women with visceral obesity and metabolic disorders.

Materials and methods: The study was completed by 14 women (30.14 ± 3.63 years) representing low levels of physical activity, visceral obesity (waist circumference 105.50 ± 14.87 cm, BMI 33.85 ± 5.48 kg/m²) and with metabolic disorders, who for 8 weeks (three times a week, 60 min), participated in NW training at the FAT _max intensity (61.92 ± 6.71% HR _max , 42.33 ± 8.69% VO_2max) controlled on the basis of heart rate (114.21 ± 14.10 bpm).

Results: After 4 and 8 weeks of NW training, a significant decrease in the concentration of asprosin, waist and hip circumference (HC), waist-to-height ratio and body adiposity index (BAI) (p < 0.05, large effect size) were found.

Conclusion: The 8-week NW training at an FAT _max intensity decreases the concentration of asprosin in the blood as well as visceral obesity in young women with metabolic disorders.

Keywords: Nordic walking; abdominal obesity; aerobic training; asprosin; body adiposity index; maximum fat oxidation; metabolic syndrome.