Supporting adolescents’ participation in muscle-strengthening physical activity : protocol for the ‘Resistance Training for Teens’ (RT4T) hybrid type III implementation–effectivene... Tekijä Kelly, Hayden Thomas Smith, Jordan James Verdonschot, Angeliek Kennedy, Sarah Grace Scott, Joseph J. McKay, Heather Nathan, Nicole Sutherland, Rachel Morgan, Philip James Salmon, Jo Penney, Dawn Boyer, James Lloyd, Rhodri S. Oldmeadow, Christopher Reeves, Penny Pursey, Kirrilly Hua, Myna Longmore, Sarah Norman, Jennifer Voukelatos, Alexander Zask, Avigdor Lubans, David Revalds