Caffeine improves performance indicators in female volleyball athletes

By Olivia Haslam

- Last updated on GMT

© Dmytro Aksonov / Getty Images
© Dmytro Aksonov / Getty Images

Related tags Caffeine female athletes fatigue athletes ergogenic aid

Caffeine increases countermovement jump (CMJ), reactive strength index (RSI) and handgrip in semi-professional women’s volleyball players, a new study has concluded.

The randomised, double-blind, crossover study, published in the journal Nutrients​, assessed the effect of supplementing with 5 mg/kg body weight caffeine over one week of training.

The authors from Spain found that the impact of caffeine intake improved the well-being, physical performance and perception of fatigue in the women's volleyball team athletes. 

Female-focused research needed 

Caffeine is often used in athletic performance as an ergogenic aid,​ with its popularity on the rise due to its effect on aerobic​ and anaerobic activities​, increasing strength and power capacity​ by enhancing intracellular calcium and Na+-K+ ATPase pump activity​ and delaying the onset of fatigue​ through activation of the central nervous system, which blocks the adenosine receptors​.

It has been well established​ that a range of supplementation with a dose of three to nine mg/kg body weight enhances athletic performance. And caffeine intake one hour before a training session has been shown to be an optimal strategy to enhance performance​ due to its fast absorption and plasma availability​. 

The authors noted that while previous volleyball studies​ have reported the effect of caffeine on jumping improvement, components such as agility and change of direction remain unclear​ and that more evidence is needed to determine the effect of caffeine on agility, especially in women’s volleyball.

“Caffeine has been proven to deliver positive outcomes in reducing perceived exertion​ and diminishing muscular soreness or damage​, although to a lesser degree than in men​," they wrote. “And, a main undesirable aspect to consider regarding caffeine supplementation in athletes is that it could negatively affect sleep quality​, especially in women athletes because the effect of caffeine persists longer in women than in men​. 

“The scientific literature on the ergogenic effect of caffeine on women’s volleyball players is scarce or lacking, which highlights the importance of this topic in volleyball. Hence, it is important to know its effects on physical performance, fatigue, and wellness.”

The 'super league' study ​ 

The researchers recruited a sample of eight semi-professional women’s volleyball players from the “Spanish Women’s Superleague 2” between the ages of 17 and 25 years and assigned them to either a caffeine or placebo supplementation group. The caffeine group consumed 5 mg/kg of caffeine anhydrous powder based on body weight before acute training. Participants switched groups after a one-week washout period.

In both groups, participants performed countermovement jumps, repeated jumps and handgrip tests, and change of direction was assessed. Well-being was also evaluated by wellness questionnaire​.

Results from ANOVA tests revealed a main effect of supplementation (F​ (1.7) = 8.41, p​ = 0.02, η2 = 0.54) across the training week on physical performance. The researchers also reported a significant effect of caffeine supplementation on perceived muscle damage and fatigue (F​ (1.7) = 7.29, p​ = 0.03, and η2 = 0.51), as well as better handgrip results in the caffeine group as compared to placebo but only in the dominant hand.

“Further similar research is needed in women that collects both physical performance and well-being parameters and correlates these variables, particularly in highly competitive periods such as the playoffs,” the researchers concluded.

Source: Nutrients
doi: doi.org/10.3390/nu16010029
“The Effect of Caffeine Supplementation on Female Volleyball Players’ Performance and Wellness during a Regular Training Week”
Authors: Jesús Siquier-Coll et al.

Related products

show more

Oats: A Superfood for Sport Nutrition and Health

Oats: A Superfood for Sport Nutrition and Health

Content provided by Fazer Mills | 26-Jan-2024 | White Paper

Oats are a versatile, affordable, and easy to use superfood that can offer many health benefits and a well-balanced nutritional profile for athletes.

Unlock the business potential of the protein trend

Unlock the business potential of the protein trend

Content provided by Valio | 24-Jan-2024 | White Paper

Read our white paper to learn how to overcome taste and texture challenges in protein products — and how to commercialise the protein trend by making delicious...

Boost Your Sports Nutrition Solution with Peptan

Boost Your Sports Nutrition Solution with Peptan

Content provided by Rousselot | 13-Nov-2023 | White Paper

Athletes are prioritizing their well-being and seeking nutritional solutions to optimize recovery, making it an indispensable aspect of their performance.

New Study for Female Athletes

New Study for Female Athletes

Content provided by Gencor | 19-Oct-2023 | Product Brochure

In a recent clinical trial backing its ingredient Libifem® for improved muscle strength, power, endurance and body composition with a females-only popluation...

Related suppliers

Follow us

Products

View more

Webinars