Overview of Exercise, Recreation and Sport Survey (ERASS) responses for muscle-strengthening (MS) activity^a prevalence levels reported by weighted counts and percentages (%) and their 95% confidence intervals (95% CI)—pooled responses for 2001–2010 (12-month recall) & 2005–10 (2-week recall).

<p>^aMuscle-strengthening activities include combined activities assessed within the Exercise, Recreation and Sport Survey (ERASS) 2001–10: Calisthenics, Gymnasium workouts, Military exercise, Prime movers (over 50s), Body building, Circuits, Power team, Weight training for fitness, & Weightlifting (for competition) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0153225#pone.0153225.ref020" target="_blank">20</a>].