Evidence map›Paper›PMID 41245974›Full record

ArticleJournal of human kinetics2025

Associations of Bilateral Deficit during Jumping with Physical Performance in Tennis Players.

Linjie Shu, Jiacheng Zhang, Tingting Chen, Hui Dong, Zhen Wang, Jiancai Chen, Min Hu, Jingwen Liao

Abstract read
In one paragraph

Article in Journal of human kinetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Linjie ShuGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.ORCID https://orcid.org/0009-0003-9829-849X
Jiacheng ZhangDepartment of Physical Education, Guangdong University of Finance, Guangzhou, China.ORCID https://orcid.org/0009-0000-2461-4603
Tingting ChenDepartment of Physical Education, Guangdong University of Finance, Guangzhou, China.
Hui DongGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.ORCID https://orcid.org/0009-0009-8239-8895
Zhen WangGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.
Jiancai ChenGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.
Min HuGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.ORCID https://orcid.org/0000-0001-9433-9547
Jingwen LiaoGuangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, China.ORCID https://orcid.org/0000-0002-4438-5577

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to investigate the associations of bilateral deficit (BLD) during jumping with physical performance represented by linear sprints and changes of direction (CODs) in tennis players. Thirty-eight tennis players (10 females and 28 males) completed a test program that included three types of jumping tests to determine BLD, two types of linear sprint tests (10 m and 20 m) to assess sprint performance, and three types of COD tests (505COD, 5105COD, and T-test) to evaluate COD performance. The three types of jumping tests included countermovement jumps (CMJs), squat jumps (SJs), and horizontal countermovement jumps (HCMJs). The bilateral index (BI) in jump height (JH), flight time (FT), peak force (PF), peak power (PP), average power (AP), and the force impulse (FI) were then calculated to quantify BLD. Change of direction deficit (CODD) was calculated by subtracting linear sprint test time from COD test time. Results showed that the BI during the CMJ was positively correlated with the linear sprint index (1 correlation, r = 0.33, p = 0.045) and most COD indices (19 correlations, r = 0.32-0.40, p = 0.013-0.049). The BI during the SJ was positively correlated with linear sprint indices (2 correlations, r = 0.32-0.35, p = 0.033-0.049) and most COD indices (17 correlations, r = 0.32-0.44, p = 0.006-0.049). The BI during the HCMJ was positively correlated with COD indices (12 correlations, r = 0.32-0.41, p = 0.010-0.049). Conclusively, BLD during jumping is positively associated with linear sprint and COD performance in tennis players, indicating that lower limb BLD could serve as an index to optimize physical performance and training.

Indexed as

change of directionlinear sprintracquet sports

Identifiers

PMID41245974
PMCPMC12612832

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.