Coffee Increases Physical and Cognitive Performance Both in Men and Women

Summary

The impact of caffeine habituation on acute responses to different doses of caffeinated coffee has received minimal attention. This study aimed to investigate the effects of different doses of coffee on physical and cognitive performance in men and women with different levels of daily caffeine consumption. Sixty-nine (35 women) athletes participated in this study, attending 4 experimental visits in a double-blind, randomized, crossover fashion: decaffeinated coffee (PLA), 1.5 mg·kg-1 (LCOF), 3 mg·kg-1 (MCOF) and 6 mg·kg-1 of caffeine (HCOF) from coffee ingestion. Sixty min after coffee consumption, participants performed squat and bench press exercises (1 repetition maximum, 1RM), 60% of 1RM muscular endurance (ME), maximal sprinting, and cognitive performance (CP) was assessed. Participants were allocated into low (LGROUP), moderate (MGROUP), and high (HGROUP) caffeine consumption groups.

Conditions

• Dietary Supplement
• Exercise

Interventions

DIETARY_SUPPLEMENT

Low Dose Caffeine (LCOF)

Caffeinated versions of instant coffee were prepared in 600 ml hot water (approximately 65°C) and served in a mug. Participants ingested 0.12 g·kg-1 of decaffeinated coffee + 0.04 g·kg-1 of caffeinated coffee to achieve 1.5 mg·kg-1 of caffeine intake in LCOF 60-min before the experimental trial.

DIETARY_SUPPLEMENT

Moderate Dose Caffeine (MCOF)

Caffeinated versions of instant coffee were prepared in 600 ml hot water (approximately 65°C) and served in a mug. Participants ingested 0.08 g·kg-1 of decaffeinated coffee + 0.08 g·kg-1 of caffeinated coffee to achieve 3 mg·kg-1 of caffeine intake in MCOF 60-min before the experimental trial.

DIETARY_SUPPLEMENT

High Dose Caffeine (HCOF)

Caffeinated versions of instant coffee were prepared in 600 ml hot water (approximately 65°C) and served in a mug. Participants ingested 0.16 g·kg-1 of caffeinated coffee to achieve 6 mg·kg-1 of caffeine intake in HCOF 60-min before the experimental trial.

DIETARY_SUPPLEMENT

Placebo (PLA)

Decaffeinated versions of instant coffee were prepared in 600 ml hot water (approximately 65°C) and served in a mug. Participants ingested 0.16 g·kg-1 of decaffeinated coffee in PLA 60-min before the experimental trial.

Sponsors & Collaborators

• Northumbria University

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

OTHER

Masking

DOUBLE

Model

CROSSOVER

Eligibility

Min Age

18 Years

Max Age

30 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-12-04

Primary Completion

2021-03-20

Completion

2021-03-20

Countries

• Turkey (Türkiye)

Study Locations