## 3 Results  
EE\({}_{\text{SPiro}}\) and EE\({}_{\text{LPM}}\) are presented in Table 1. For the entire test duration, a highly significant difference between EE\({}_{\text{SPiro}}\) and EE\({}_{\text{LPM}}\) was found (\(t(10)=19.94\), \(p<0.001\), \({}_{\text{p}}\eta^{2}=0.98\)). However, a significant correlation could not be determined (\(r=0.32\), \(p=0.34\)(Figure 2A). All single heats differed between EE\({}_{\text{Spiro}}\) and EE\({}_{\text{LPM}}\) (\(15.86\leq t(10)\leq 19.35\), \(p<0.001\), \(p\eta^{2}=0.97\)), and no heat showed a significant correlation between the systems (\(0.18\leq p\leq 1\), \(r\leq 0.44\)) (Table 2). As an example, heat #6 (\(r=0.26\), \(p=0.46\)), the most intense heat of the GBPT, is shown in Figure 2B. Mean EE\({}_{\text{Spiro}}\) and EE\({}_{\text{LPM}}\) during single heats are presented in Table 3. A visual comparison of both systems' data sets during the entire test duration is displayed in Figure 3. Individual values of REE as well as of pre-activated motionless EE in relation to gross EE are presented in Table 1. Subtracting REE from gross EE\({}_{\text{Spiro}}\) did not affect the results of difference analysis (\(t(10)=18.71\), \(p<0.001\), \(p\eta^{2}=0.97\)) and correlation (\(r=0.32\), \(p=0.33\)). The high values of the pre-activated motionless EE (see Table 1) are not suitable for subtraction from EE\({}_{\text{Spiro}}\) because of their magnitude (\(86.5\pm 7.8\%\) of the gross EE across all participants, \(100\%\) of the gross EE for one participant). They were not used for further analyses.  
\begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline  & & & & & & & & & & & & \\ \hline  & & **P01** & **P02** & **P03** & **P04** & **P05** & **P06** & **P07** & **P08** & **P09** & **P10** & **P11** \\ \hline EE\({}_{\text{Spiro}}\) & & & & & & & & & & & & \\  & [kJ/kg/min] & 0.86 & 0.83 & 0.74 & 0.82 & 0.85 & 0.69 & 0.74 & 0.77 & 0.92 & 0.61 & 0.72 \\  & [kJ/min] & 60.18 & 60.30 & 52.28 & 64.93 & 65.59 & 55.89 & 51.72 & 54.01 & 63.32 & 59.72 & 64.00 \\  & [kcal/min] & 14.38 & 14.41 & 12.50 & 15.52 & 15.68 & 13.36 & 12.36 & 12.91 & 15.31 & 14.27 & 15.30 \\ \hline Resting EE & & & & & & & & & & & & \\  & [kJ/kg/min] & 0.06 & 0.06 & 0.06 & 0.05 & 0.05 & 0.05 & 0.06 & 0.06 & 0.04 & 0.05 \\ Pre-activated, motionless, resting EE & & & & & & & & & & & & \\  & [kJ/kg/min] & 0.71 & 0.69 & 0.60 & 0.77 & 0.81 & 0.69 & 0.64 & 0.72 & 0.72 & 0.47 & 0.58 \\ \hline EE\({}_{\text{Spiro}}\) subtracted by resting EE & & & & & & & & & & & & \\  & [kJ/kg/min] & 0.81 & 0.78 & 0.69 & 0.77 & 0.80 & 0.64 & 0.68 & 0.72 & 0.87 & 0.57 & 0.67 \\  & [kJ/min] & 56.18 & 56.30 & 48.28 & 60.93 & 61.59 & 51.89 & 47.72 & 50.01 & 59.32 & 55.72 & 60.00 \\  & [kcal/min] & 13.43 & 13.46 & 11.54 & 14.56 & 14.72 & 12.40 & 11.41 & 11.95 & 14.18 & 13.32 & 14.34 \\ \hline EE\({}_{\text{LPM}}\) & & & & & & & & & & & & \\  & [kJ/kg/min] & 0.26 & 0.31 & 0.26 & 0.25 & 0.24 & 0.20 & 0.27 & 0.27 & 0.30 & 0.27 & 0.30 \\  & [kJ/min] & 18.30 & 22.32 & 18.51 & 20.01 & 18.58 & 16.39 & 18.60 & 18.87 & 20.89 & 26.21 & 26.36 \\  & [kcal/min] & 4.37 & 5.33 & 4.42 & 4.78 & 4.44 & 3.92 & 4.45 & 4.51 & 4.99 & 6.26 & 6.30 \\ \hline \end{tabular}
\end{table}
Table 1: Energy expenditure (EE) via spiroergometry (EE\({}_{\text{Spiro}}\)) and local position measurement (EE\({}_{\text{LPM}}\)) during the entire GBPT.  
Figure 2: Correlation coefficient(\(r\)) and significance (\(p\)) between energy expenditure via spiroergometry (EE\({}_{\text{Spiro}}\)) and via local position measurement system (EE\({}_{\text{LPM}}\)) for the entire test (**A**) and heat #6 as an example for the most intensive heat (**B**).