Diabetes technology

Continuous Glucose Monitoring Profiles in Elite-Level Professional European Football Players

J Diabetes Sci TechnolPublished Descriptive observational study

Authors' conclusion

This observational study suggests that elite European footballers may have significant increases in glycemia, as measured by CGM, supporting the notion that mild hyperglycemia can occur during and after active competition in healthy and metabolically normal athletes, perhaps because of competition stress.

Study context

Population
Healthy male elite football players, UEFA Champions League club; age 27.5 ± 5.1 yearssingle-game subset n=14
Participants
18 players
Exposure
Active vs reserve players during a single game
  • Activen = 10
  • Reserven = 4reference
Outcome
Mean CGM glucose during game
Follow-up
During game

Main finding

As reported in the abstract

P = 0.09

Observational data: associations, not effects.

Further findings

TAR during game

P = 0.04

TIR during game

P = 0.04

TAR, 90 min pre- to 180 min post-game

P = 0.02

Mean iG, 90 min pre- to 180 min post-game

P = 0.02

All 18 players, day vs night continuous glucose monitoring (CGM) metrics · daytime (06:00 am-10:59 pm) and nighttime (11:00 pm-05:59 am)

Time in range (TIR) day / night
89.4 ± 11.7% / 91.6 ± 13.7%
Time above range (TAR) day / night
5.9 ± 6.7% / 2.9 ± 5.7%
TBR day / night
4.5 ± 10.5% / 5.3 ± 13.2%

Original publication

Continuous Glucose Monitoring Profiles in Elite-Level Professional European Football Players. J Diabetes Sci Technol. Published 14 November 2025. doi:10.1177/19322968251388668

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