tetano
Editor, Senior Moderator
PLoS One
. 2024 Sep 19;19(9):e0308955.
doi: 10.1371/journal.pone.0308955. eCollection 2024. Changes in strength performance of highly trained athletes after COVID-19
Jie Cao[SUP] 1 [/SUP], Shengtao Yang[SUP] 1 [/SUP], Jinhao Wang[SUP] 1 [/SUP], Peng Zhang[SUP] 1 [/SUP]
Affiliations
Introduction: This study aimed to explore the impact of COVID-19 on strength performance in highly trained athletes.
Method: A force plate was employed to measure squat jump height (SJH), counter-movement jump height (CMJH), and drop jump reactive strength index (DJRSI) in 27 highly trained athletes before infection, and at one week, two weeks, and four weeks post-recovery. Additionally, an Isometric Mid-thigh Pull (IMTP) test was conducted to record maximum isometric strength (MIS) and the rate of force development of the initial phase (RFD 0-50; RFD 0-100). Repeated measures analysis of variance was utilized to compare variations in these indicators across different time points.
Results: One week post-recovery, SJH (-7.71%, P = 0.005), CMJH (-9.08%, P < 0.001), DJRSI (-28.88%, P < 0.001), MIS (-18.95%, P < 0.001), RFD 0-50 (-64.98%, P < 0.001), and RFD 0-100 (-53.65%, P < 0.001) were significantly lower than pre-infection levels. Four weeks post-recovery, SJH (-2.08%, P = 0.236), CMJH (-3.28%, P = 0.277), and MIS (-3.32%, P = 0.174) did not differ significantly from pre-infection levels. However, DJRSI (-11.24%, P = 0.013), RFD 0-50 (-31.37%, P = 0.002), and RFD 0-100 (-18.99%, P = 0.001) remained significantly lower than pre-infection levels.
Conclusion: After COVID-19, highly trained athletes exhibited a significant reduction in maximum strength, explosive strength, reactive strength, and initial phase force generation capability. By four weeks post-recovery, their maximum and explosive strength had returned to near pre-infection levels, yet their reactive strength and initial phase force generation capability remained significantly impaired.
. 2024 Sep 19;19(9):e0308955.
doi: 10.1371/journal.pone.0308955. eCollection 2024. Changes in strength performance of highly trained athletes after COVID-19
Jie Cao[SUP] 1 [/SUP], Shengtao Yang[SUP] 1 [/SUP], Jinhao Wang[SUP] 1 [/SUP], Peng Zhang[SUP] 1 [/SUP]
Affiliations
- PMID: 39298453
- PMCID: PMC11412504
- DOI: 10.1371/journal.pone.0308955
Introduction: This study aimed to explore the impact of COVID-19 on strength performance in highly trained athletes.
Method: A force plate was employed to measure squat jump height (SJH), counter-movement jump height (CMJH), and drop jump reactive strength index (DJRSI) in 27 highly trained athletes before infection, and at one week, two weeks, and four weeks post-recovery. Additionally, an Isometric Mid-thigh Pull (IMTP) test was conducted to record maximum isometric strength (MIS) and the rate of force development of the initial phase (RFD 0-50; RFD 0-100). Repeated measures analysis of variance was utilized to compare variations in these indicators across different time points.
Results: One week post-recovery, SJH (-7.71%, P = 0.005), CMJH (-9.08%, P < 0.001), DJRSI (-28.88%, P < 0.001), MIS (-18.95%, P < 0.001), RFD 0-50 (-64.98%, P < 0.001), and RFD 0-100 (-53.65%, P < 0.001) were significantly lower than pre-infection levels. Four weeks post-recovery, SJH (-2.08%, P = 0.236), CMJH (-3.28%, P = 0.277), and MIS (-3.32%, P = 0.174) did not differ significantly from pre-infection levels. However, DJRSI (-11.24%, P = 0.013), RFD 0-50 (-31.37%, P = 0.002), and RFD 0-100 (-18.99%, P = 0.001) remained significantly lower than pre-infection levels.
Conclusion: After COVID-19, highly trained athletes exhibited a significant reduction in maximum strength, explosive strength, reactive strength, and initial phase force generation capability. By four weeks post-recovery, their maximum and explosive strength had returned to near pre-infection levels, yet their reactive strength and initial phase force generation capability remained significantly impaired.