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Analysis of institutional authors

Munoz, AlejandroAuthorRivilla-Garcia, JesusAuthor

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December 7, 2020
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Article

Effects of Caffeine Ingestion on Physical Performance in Elite Women Handball Players: A Randomized, Controlled Study

Publicated to: International Journal of Sports Physiology and Performance. 15 (10): 1406-1413 - 2020-11-01 15(10), DOI: 10.1123/ijspp.2019-0847

Authors:

Muñoz, A; López-Samanes, A; Pérez-López, A; Aguilar-Navarro, M; Moreno-Heredero, B; Rivilla-García, J; González-Frutos, P; Pino-Ortega, J; Morencos, E; Del Coso, J
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Affiliations

Rey Juan Carlos Univ, Ctr Sport Studies - Author
Univ Alcala, Dept Biomed Sci Area Sport & Phys Educ, Fac Med & Hlth Sci - Author
Univ Francisco Vitoria, Exercise & Sport Sci - Author
Univ Francisco Vitoria, Sch Physiotherapy, Fac Hlth Sci - Author
Univ Murcia, Sport Sci Fac, Dept Phys Act & Sport Sci - Author
Univ Politecn Madrid UPM, Fac Phys Act & Sports Sci INEF - Author
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Abstract

Purpose: To investigate the effects of acute caffeine (CAFE) intake on physical performance in elite women handball players. Methods: A total of 15 elite women handball players participated in a randomized, double-blind study. In 2 different trials, participants ingested either a placebo (cellulose) or 3 mg of CAFF per kilogram of body mass (mg/kg bm) before undergoing a battery of neuromuscular tests consisting of handball throws, an isometric handgrip strength test, a countermovement jump, a 30-rn sprint test (SV) and a modified version of the agility T test. Then, participants performed a simulated handball game (2 x 20 min), and movement patterns were recorded with a local positioning system. Results: Compared with the placebo, CAFF increased ball velocity in all ball throws (P = .021-.044; effect size [ES] = 0.39-0.49), strength in isometric handgrip strength test (350.8 [41.2] vs 361.6 [46.1] N, P = .034; ES = 0.35), and countermovement-jump height (28.5 [5.5] vs 29.8 [5.5] cm; P = .006; ES = 0.22). In addition, CAR' decreased running time in the SV (4.9 [0.2] vs 4.8 [0.3] s; P = .042; ES = -0.34). In the simulated game, CAFF increased the frequency of accelerations (18.1 [1.2] vs 18.8 [1.0] number/min; P = .044; ES = 0.54), decelerations (18.0 [1.2] vs 18.7 [1.0] number/min; P = .032; ES = 0.56), and body impacts (20 [8] vs 22 [10] impacts/min; P = .032; ES = 0.30). However, postexercise surveys about self-reported feelings of performance indicate that players did not feel increased performance with CAFF. Conclusion: Preexercise ingestion of 3 mg/kg bm of CAFF improved ball-throwing velocity, jump, and sprint performance and the frequency of in-game accelerations and decelerations in elite women handball players.
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Keywords

Adverse effectsAthletic performanceCaffeineControlled studyEnergy drinksExercise testFemaleFitnessHand strengthHumanHumansMatch activityNutritionPerformance enhancing substancePerformance-enhancing substancesRandomized controlled trialSportSportsSystemVelocity

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal International Journal of Sports Physiology and Performance due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 22/88, thus managing to position itself as a Q1 (Primer Cuartil), in the category Sport Sciences.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 2.95. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 3.41 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-05, the following number of citations:

  • WoS: 41
  • Scopus: 44
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-05:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 117.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 117 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 10.
  • The number of mentions on the social network X (formerly Twitter): 14 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (MUÑOZ LOPEZ, ALEJANDRO) .

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Awards linked to the item

The authors wish to thank the subjects for their invaluable contribution to the study. This study was partially funded by Universidad Francisco de Vitoria and Banco Santander via grants (UFV-2020/43).
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