Reliability and validity of an observational system to qualify performance indicators in goalball matches: Scal-Go proposal - Alves, Isabella; Gomide, Leonardo Lopes; Nunes, Maria Julia Rocha; Vizú, Tatiana Merino; Aquino, Rodrigo Leal de Queiroz Thomaz de; Menezes, Rafael Pombo; Furtado, Otávio Luis Piva da Cunha; Morato, Márcio Pereira (European Journal of Adapted Physical Activity - EUJAPA, 2022)