TY  - RPRT
TI  - Quantitative analysis of segmental wall motion during maximal upright dynamic exercise: variability in normal adults.
AU  - L E Ginzton
AU  - R Conant
AU  - M Brizendine
AU  - T Thigpen
AU  - M M Laks
PY  - 1986
DO  - 10.1161/01.cir.73.2.268
UR  - https://pubmed.ncbi.nlm.nih.gov/3943161/
ID  - 3943161
ER  -