Regression analysis results for daily sedentary behaviour pattern parameters.

LMTU, muscle-tendon unit length; LM, muscle length; ACSA, anatomical cross-sectional area; VM, muscle volume; LF, fascicle length; LF-N, normalised fascicle length; θ, fascicle pennation angle; PCSA, physiological cross-sectional area; Breaks SB, sedentary behaviour interruptions with ≥2 consecutive minutes upright activity; Short SB bouts, sedentary behaviour bouts <30 minutes duration; Long SB bouts, sedentary behaviour bouts ≥30 minutes duration; α, scaling parameter sedentary bout length distribution; X1/2, median SB bout duration; W1/2, fraction total sedentary time accumulated in bouts longer than median sedentary bout length; W50%, half of total SB is accumulated in SB bouts ≤ this duration; F, fragmentation index of SB bouts and total SB; Period, mean period between SB bouts; 95%-CI, 95% confidence interval; ¶Log-transformed; *P<0.05; ** P<0.01.