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Table 8 Pacing

From: Is There Evidence for the Development of Sex-Specific Guidelines for Ultramarathon Coaches and Athletes? A Systematic Review

Study

Participants

Measures

Design

Evidence quality

Major findings

Suter et al.[9]

13,829 athletes (1148 females and 12,681 males) who completed the UTMB between 2008–2019

Average running speed,

pace variation

Retrospective data analysis

Low

More even pacing was associated with better finish times in males and females

Females demonstrated higher pace variation than males

Bossi et al.[65]

501 athletes (103 females and 398 males) who competed in a 24 h ultramarathon held in Brazil

Mean running speed for each hour

Cohort study

Low

Both sexes demonstrated a reverse J-shaped pacing pattern, with no significant difference between sexes. More even pacing was associated with better performances in males and females

Moffit & Call [68]

1,453 athletes (462 females and 991 males) who completed a 100 mile race held in the United States between 2010–2019

Running pace, %MRS

Retrospective data analysis

Low

Females ran at a significantly lower %MRS in the first third of the race and finished with a significantly higher %MRS than males. A more even pacing strategy was associated with better performances in males and females

Inoue et al.[66]

51 athletes (21 females and 30 males) who completed a 24 h track ultramarathon held in Brazil

Time per 400 m, time spent in SSR

Cohort study

Low

Both sexes demonstrated a reverse J-shaped pacing pattern. In both sexes, high-performance runners spent significantly less time in SSR than low-performance runners

Renfree

et al.[64]

196 athletes (57 females and 139 males) who competed in the 100 km World Masters Championship

Relative speed per 10 km segment, pace CV

Cohort study

Low

Males displayed significantly higher relative speeds in the first (p = 0.03), second (p < 0.01), and third (p < 0.01) 10 km segments. Females had significantly higher relative speeds in the ninth segment (p = 0.01)

CV over intermediate segments were 7.39% for females and 10.33% for males

Deusch et al.[67]

937 athletes (260 females aged 46.83 ± 12.33 years, and 677 males aged 49.3 ± 11.52 years) who completed one of 12 time-limited ultramarathons on flat asphalt in Europe

CV of time per lap, average running speed

Retrospective data analysis

Low

There was no main effect of sex on pacing. Both sexes demonstrated a higher CV for 24-h races compared with 6- and 12-hour races

  1. UTMB, Ultra-Trail du Mont-Blanc; %MRS, percentage of mean running speed; SSR, significant speed reduction; and CV, coefficient of variability