The Behavior of Muscle Oxygen Saturation, Oxy and Deoxy Hemoglobin during a Fatigue Test in Fibromyalgia

• Autor(a) principal: Villafaina, Santos
• Data de Publicação: 2023
• Outros Autores: Tomas-Carus, Pablo, Silva, Vanda, Rodrigues Costa, Ana, Fernandes, Orlando, Parraca, Jose A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10174/34080; https://doi.org/Villafaina, Santos, Pablo Tomas-Carus, Vanda Silva, Ana Rodrigues Costa, Orlando Fernandes, and Jose A. Parraca. 2023. "The Behavior of Muscle Oxygen Saturation, Oxy and Deoxy Hemoglobin during a Fatigue Test in Fibromyalgia" Biomedicines 11, no. 1: 132.https://doi.org/10.3390/biomedicines11010132; https://doi.org/10.3390/biomedicines11010132
• topic: strengt; mitochondrial; autonomic modulation; physical exercise; fatigue

Previous studies have reported that people with fibromyalgia (FM) could suffer from mitochondrial dysfunction. However, the consumption of muscle oxygen during physical exercise has been poorly studied. Therefore, this study aimed to explore the response of muscle oxygen during a fatigue protocol in people with FM and healthy controls (HC). In addition, the peak torque and the total work were assessed. A total of 31 participants (eighteen were people with fibromyalgia and thirteen were healthy controls) were enrolled in this cross-sectional study. All the participants underwent a fatigue protocol consisting of 20 repetitions at 180__s 1 of quadriceps flexions and extensions using a Biodex System 3. The muscle oxygen saturation (SmO2), total hemoglobin (THb), deoxygenated hemoglobin (HHb) and oxygenated hemoglobin (O2Hb) values were measured using a portable near-infrared spectroscopy (NIRS) device. Significant differences between people with FM and healthy controls were found at baseline: SmO2 (FM: 56.03 _ 21.36; HC: 77.41 _ 10.82; p = 0.036), O2Hb (FM: 6.69 _ 2.59; HC: 9.37 _ 1.31; p = 0.030) and HHb (FM: 5.20 _ 2.51; HC: 2.73 _ 1.32; p = 0.039); during the fatigue protocol: SmO2 (FM: 48.54 _ 19.96; HC: 58.87 _ 19.72; p = 0.038), O2Hb (FM: 5.70 _ 2.34; HC: 7.06 _ 2.09; p = 0.027) and HHb (FM: 5.69 _ 2.65; HC: 4.81 _2.39; p = 0.048); and in the recovery at three min and six min for SmO2, O2Hb and HHb (p < 0.005). Furthermore, healthy control values of SmO2, O2Hb and HHb have been significantly altered by the fatigue protocol (p < 0.005). In contrast, people with FM did not show any significant alteration in these values. Moreover, significant differences were found in the peak torque at extension (FM: 62.48 _ 24.45; HC: 88.31 _ 23.51; p = 0.033) and flexion (FM: 24.16 _ 11.58; HC: 42.05 _ 9.85; p = 0.010), and the total work performed at leg extension (FM: 1039.78 _ 434.51; HC: 1535.61 _ 474.22; p = 0.007) and flexion (FM: 423.79 _ 239.89; HC: 797.16 _ 194.37; p = 0.005).