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Mémoire de Maîtrise
DOI
https://doi.org/10.11606/D.5.2018.tde-28032018-092851
Document
Auteur
Nom complet
Tania de Carvalho Spada
Adresse Mail
Unité de l'USP
Domain de Connaissance
Date de Soutenance
Editeur
São Paulo, 2017
Directeur
Jury
Burdmann, Emmanuel de Almeida (Président)
Costa, Maristela Carvalho da
Mion Junior, Décio
Santos, Ubiratan de Paula
Titre en portugais
Exercício resistido intervalado de alta intensidade (HIIRT) causa danos musculares e renais em indivíduos saudáveis
Mots-clés en portugais
Biomarcadores
Exercício
Fatores de risco
Lesão renal aguda
Rabdomiólise
Treinamento intervalado de alta intensidade
Resumé en portugais
O treinamento resistido intervalado de alta intensidade (high intensity interval resistance training-HIIRT) tem se tornado cada vez mais popular nos últimos anos poispromoveresultados positivos com curtas sessões de treinamento. No entanto, sua alta intensidade pode causar efeitos adversos. O objetivo deste estudo foi avaliar se uma sessão de HIIRT causa dano muscular agudo e alterações nos biomarcadores de lesão renal. Cinquenta e oito voluntários saudáveis, divididos igualmente entre homens e mulheres com 24 anos de idade (mediana), participaram deste estudo. Nenhum deles usou suplementos dietéticos ou medicamentos. Eles foram submetidos a cinco minutos de aquecimento seguido de quatro minutos de HIIRT. Uma escala numérica de Borg para dor (CR10P), amostras de sangue e urina foram coletadas antes (basal), 2 e 24h após a sessão HIIRT. As amostras de sangue foram analisadas e dosadocreatinina sérica (CrS),lipocalina associada a gelatinase de neutrófilos (NGALS), creatinofosfoquinase (CPK) e mioglobina (Mio). As amostras urinárias foram analisadas e dosadoscreatinina (CrU),lipocalina associada a gelatinase de neutrófilos (NGALU), interleucina 18 (IL-18), calbindina, microalbuminúria (?albumina), trefoil factor-3(TFF3) e beta-2microglobulina (ß2M). O CR10 e CPK tiveramum aumento significativo e crescente após2 e 24h. Mioaumentou significativamente em 2h e continuouelevadaapós24h. CrSaumentou significativamente após24h e em três homens,o aumento atingiu os critérios para o diagnóstico de injúria renal aguda (IRA). Todos os biomarcadores urinários aumentaram significativamente 2 horas após o exercício e retornaram aos valores basais24h após HIIRT. Concluindo, uma única sessão de HIIRT em indivíduos jovens e saudáveis causou elevações precocese significativas em CPK, mioglobina, CrS,microalbuminúria e biomarcadores urinários, indicando lesão tubularrenal, sugerindo a ocorrência de rabdomiólise e danos funcionais eestruturais aos rins
Titre en anglais
High intensity interval resistance training causes acute muscle and renal damage in healthy individuals
Mots-clés en anglais
Acute kidney injury
Biomarkers
Exercise
High-intensity interval training
Rhabdomyolysis
Risk factors
Resumé en anglais
High intensity interval resistance training (HIIRT) emerged as one of the fastest growing exercise programs in recent years because provides positive results with short training sessions. However, its high intensity might cause adverse effects. The aim of this study was to evaluate if a session of HIIRT causes acute muscle damage and changes in kidney injury biomarkers. Fifty-eight healthy volunteers, divided equally among men and women (median age 24 years), participated in this study. None of them used dietary supplements or medications. They were submitted to five minutes of warm-up followed by four minutes of HIIRT. A Borg CR10 Scale for pain (CR10P), and blood and urinary samples were collected before (baseline), 2 and 24h after HIIRT session. Blood samples were analyzed for serum creatinine (SCr), neutrophil gelatinase-associated lipocalin (SNGAL), creatine kinase(CK) and myoglobin (Myo). Urinary samples were assessed for creatinine (UCr), neutrophil gelatinase-associated lipocalin (UNGAL), interleukin 18 (IL-18), calbindin, microalbuminuria (ualbumin), trefoil factor-3 (TFF3) and beta-2 microglobulin (beta2M). CR10 had a significantly and crescent increase on 2 and 24h. CK increased significantly on 2h and further in 24h. Myo increased significantly on 2h and stayed elevated at 24h. SCr increased significantly on 24h and inthree men the increase met criteria for acute kidney injury diagnosis. All the other serum and urinary kidney injury biomarkers increased significantly at 2 hours and returned to basal values at 24h after HIIRT. In conclusion, a single session of HIIRT inyoung, healthy individuals caused early and significant elevations in CK, myoglobin, SCr, microalbuminuria and urinary biomarkers indicative of kidney tubular injury, suggesting the occurrence of rhabdomyolysis and functional and structural kidney damage
 
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Date de Publication
2018-03-29
 
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