Table 3.

Linear mixed model parameter estimates for variables measured during work bouts (n = 8).

PARAMETER	HR	${\overline{\text{T}}}_{\text{SK}}$	TR	${\overline{\text{T}}}_{\text{B}}$
Intercept	86.90 [75.79, 98.01]∗∗∗	33.78 [34.64,35.52]∗∗∗	37.32 [37.10, 37.53]∗∗∗	36.61 [36.38, 36.84]∗∗∗
β, Time	0.39 [0.21, 0.57]∗∗∗	−0.02 [−0.04, −0.01]∗∗	0.02 [0.02, 0.02]∗∗∗	0.01 [0.01, 0.02]∗∗∗
β, Time0.5	4.76 [3.51, 6.01]∗∗∗	0.61 [0.48, 0.74]∗∗∗	−0.04 [−0.06, −0.01]∗	0.09 [0.06, 0.12]∗∗∗
β, Condition
IV	−1.74 [−6.95, 3.50]	−3.06 [−3.59, −2.53]∗∗∗	−0.05 [−0.16, 0.06]	−0.65 [−0.79, −0.52]∗
SLIV	−4.95 [−10.16, 0.25]	−3.85 [−4.38, −3.32]∗∗∗	−0.46 [−0.57, −0.35]∗∗∗	−1.13 [−1.27, −1.00]∗
PCM	−5.70 [−10.91, −0.50]∗	−2.10 [−2.63, −1.57]∗∗∗	−0.10 [−0.21, 0.08]	−0.51 [−0.64, −0.37]∗
WS	1.56 [−3.64, 6.77]	−1.35 [−1.88, −0.82]∗∗∗	0.05 [−0.06, 0.17]	−0.21 [−0.35, −0.08]∗
β, Time × Condition
IV	−0.27 [−0.42, −0.13]∗∗∗	0.02 [0.01, 0.04]∗∗	−0.004 [−0.007, −0.001]∗	0.0010 [−0.0027, 0.0047]
SLIV	−0.17 [−0.31, −0.03]∗	0.00 [−0.01, 0.02]	0.004 [0.000, 0.006]∗	0.0042 [0.0004, 0.0079]∗
PCM	−0.19 [−0.33, −0.05]∗	0.02 [0.00, 0.03]∗	−0.005 [−0.008, −0.002]∗∗	0.0001 [−0.0036, 0.0038]
WS	−0.34 [−0.49, −0.20]∗∗∗	0.01 [−0.01, 0.02]	−0.007 [−0.010, −0.004]∗∗∗	−0.0047 [−0.0085, −0.0010]∗

Data presented as mean [95% CI]. Intercept of mixed model denotes control condition alone. β = beta coefficient of model parameter; statistical effect (i.e., the 95% confidence interval does not include zero) indicated by ^∗∗∗p < 0.001; ^∗∗p < 0.01; ^∗p < 0.05. Values are reported to at least one significant decimal place. HR, heart rate;${\overline{T}}_{\mathit{SK}}$, mean skin temperature; T_R, rectal temperature;${\overline{\text{T}}}_{\text{B}}$, mean body temperature; IV, ice vest; SLIV, slurry and ice vest; PCM, phase change material; WS, water-perfused suit.