. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: JACC Cardiovasc Imaging. 2016 Dec;9(12):1367–1376. doi: 10.1016/j.jcmg.2016.07.013

Table 3.

Univariate and multivariate predictors of postseason global longitudinal strain (GLS) in American style football after 90 days of participation.

	Univariate Analysis		Multivariate Analysis
	β -Coefficient	P-value	β -Coefficient	P-value
Black ethnicity	.121	0.27	-----	-----
Family history of HTN	.095	0.38	-----	-----
Linemen field position	.458	<0.001	.402	<0.001
Preseason Data:
Weight (kg)	.420	<0.001	-----	-----
Height (cm)	.335	0.002	-----	-----
BMI (kg/m²)	.313	0.003	-----	-----
BSA (m²)	.426	<0.001	-----	-----
Heart rate (bpm)	.215	0.04	-----	-----
SBP (mmHg)	.323	0.002	-----	-----
DBP (mmHg)	−0.45	0.68	-----	-----
GLS (%)	.418	<0.001	-----	-----
Intra-season Data (Δ’s):	.183	0.09	-----	-----
Weight Δ (kg)
BMI Δ (kg/m²)	.169	0.012
BSA Δ (m²)	.271	0.04
Heart rate Δ (bpm)	.072	0.510	-----	-----
SBP Δ (mmHg)	.202	0.06	-----	-----
DBP Δ (mmHg)	.166	0.13	-----	-----
GLS Δ (%)	.465	<0.001	-----	-----
Postseason Data:
Weight (kg)	.447	<0.001	.375	<0.001
BMI (kg/m²)	.347	<0.001	-----	-----
BSA (m²)	.452	<0.001	-----	-----
Heart rate (bpm)	.246	0.02	-----	-----
SBP (mmHg)	.376	<0.001	.325	<0.001
DBP (mmHg)	.106	0.329	-----	-----
LV Mass (g)	.258	0.02	-----	-----
LV Wall Thickness (mm)	.389	<0.001	.234	<0.001
Relative Wall Thickness	.342	<0.001	.218	0.003

BMI = body mass index, BSA = body surface area, DBP = diastolic blood pressure, GLS = global longitudinal strain, HTN = hypertension, LV = left ventricular, SBP = systolic blood pressure