Table 1. Mean (SD) of half-marathon performance, anthropometric, training, physiological and biomechanical variables of the runners (n = 78) participants in the Phase 1 and Phase 2 of the present study. Correlations to race time (“r”).
Phase 1 (n= 48)
Phase 2 (n=30)
Variables
Mean (SD)
r
Mean (SD)
r
Race time (min)
80.18 (11.33)#
86.66 (8.53)
Anthropometry
Mass (kg)
70.2 (6.8)#
.45*
74.9 (11.1)
.52*
Height (m)
1.77 (.06)
-.19
1.78 (.09)
.19
Body mass index (kg·m-2)
22.4 (2.0)#
.64*
23.7 (2.1)
.63*
∑ of 6 skinfolds (mm)
51.5 (17.5)
.78*
56.9 (24.0)
.76*
Training
Running experience (years)
8.8 (6.6)#
-.75*
4.6 (3.1)
-.33
Training volume (km·week-1)
75.7 (36.0)#
-.80*
37.7 (14.8)
-.46*
Training frequency (sessions· week-1)
5.5 (2.4)#
-.83*
3.2 (1.0)
-.45*
Physiology
VO2max (ml·kg-1·min-1)
61.5 (7.5)#
-.75*
56.5 (6.2)
-.59*
HRmax (bpm)
186(8)
.10
183(7)
-.05
RCT % VO2max
87.6 (5.2)
-.34*
86.1 (3.1)
-.59*
Peak speed (km·h-1)
19.7 (1.9)#
-.92*
18.9 (1.4)
-.86*
RCT speed (km·h-1)
16.3 (2.1)#
-.92*
14.9 (1.3)
-.92*
Biomechanics
Minimum contact time (ms)
.207 (.02)
.76*
.201 (.02)
.62*
Maximal step rate (Hz)
3.17 (.16)#
-.04
3.26 (.19)
.05
Maximal step length (m)
1.70 (.18)#
-.73*
1.63 (.14)
-.64*
RCT contact time (s)
.230 (.03)
.82*
.240 (.02)
.65*
RCT step rate (Hz)
2.96 (.15)
-.38*
3.00 (.15)
-.10
RCT step length (m)
1.66 (.20)#
-.87*
1.36 (.13)
-.79*
∑ of six skinfolds, sum of six skinfolds (triceps, subscapular, suprailiac, abdominal, front thigh, and medial calf). VO2max, maximal oxygen uptake. HRmax, maximal heart rate. RCT, respiratory compensation threshold.
* Significant correlations with the race time (p < 0.05).
# significant differences between both groups (p < 0.05).