Every country has its limits. One of those limits, for one country, is on display in this study:
“Mismatch between jar opening demands and wrist torque strength of consumers in Iran,” Iman Dianat, Behzad Asadi, Héctor Ignacio Castellucci, Applied Ergonomics, vol. 94, March 2021, article 103421. The authors report:
“A considerable mismatch (range = 25%–100%) was found between the required torque strength for opening the existing jars and the wrist U/R torque strength of the study population, particularly for females and those aged 5–9 years. A torque limit of 1.8 Nm was proposed for opening jars for the entire population.”