almost significantp -value = 0.014
On the one hand, when the analysis was stratified by the harvesting method and the effect of the work period was adjusted, the correlations between the % HRR and the Borg RPE were no longer significant, meanwhile statistically significant or almost significant correlations between the % HRR and the Omni RPE were found in all the worker groups ( p -value = 0.014, 0.015, and 0.086 for Ground, Ladder, and Platform groups, respectively), as shown in Figure 7 .