Shliakhova , N., Rak , L. and Muzhanovskiy , V. 2024. Homocysteine as a biomarker of physical activity and exercise tolerance in adolescent children. Physical Rehabilitation and Recreational Health Technologies. 9, 4 (Jul. 2024), 269–284. DOI:https://doi.org/10.15391/prrht.2024-9(4).07.