The Traditional Latin Mass Society of San Francisco has posted an extremely detailed and informative booklet by Richard Friend titled “Understanding When to Kneel, Sit, and Stand at a Traditional Latin Mass: A Short Essay on Mass Postures”. The essay is available in a PDF file here. After reviewing much history and scholarship on the subject, the author concludes:
“Whether the Mass is Low or Sung, ideally people in the U.S. should (i) stand for the Introit, Kyrie, Gloria, Collects; (ii) sit for the Epistle, Gradual, Alleluia (tract, sequence); (iii) stand for the Gospel; (iv) sit for the homily; (v) stand for the Credo, and Oremus; (vi) sit during the Offertory; (vii) stand at Orate Fratres; (viii) kneel after the Sanctus; (ix) stand at Per omnia sæcula sæculorum at the end of the canon just before the Pater Noster; (x) kneel after the Agnus Dei and throughout Communion; (xi) sit for the ablutions; (xii) stand at Dominus vobiscum before the Post-communion prayers; (xiii) stand during Post-communion prayer and the dismissal (Ite Missa est); (xiv) kneel for the final blessing; (xv) stand for the Last Gospel; (xvi) and stand for the recessional.”
Quite honestly, this seems much more intuitive to me than the current practices for Low Mass as proscribed in the ubiquitous red missalettes published by Coalition Ecclesia Dei (a group which should be thanked profusely for its immense contribution to the traditionalist movement in the United States). I’d be delighted to see this implemented in TLM communities, but I think it will take the leadership of priests to make this happen. It definitely won’t do to have individual worshipers taking this up on their own while everyone else follows the red missalettes!