Impact of Nordic Hamstring Exercises on Hamstring Injuries in Male Cricket Players

Authors

  • M. Abubakar Azhar University of Lahore, Lahore, Pakistan
  • Muhammad Umar Gulab Devi Educational Complex, Lahore, Pakistan
  • Muhammad Shahzad Qadree Nur International University, Lahore, Pakistan

DOI:

https://doi.org/10.61919/jhrr.v6i2.1935

Keywords:

shared decision-making; decision aids; cardiovascular risk; primary prevention; randomized controlled trial

Abstract

Background: Effective shared decision-making is central to cardiovascular disease prevention, yet patients frequently experience decisional conflict, limited confidence, and inadequate engagement when risk information is conveyed through usual care alone. Decision aids have been shown to improve decision quality, but comparative evidence on the impact of decision aid intensity remains limited, particularly in primary care settings within low- and middle-income countries. Objective: To evaluate the comparative effectiveness of two decision aid intensities, strong and moderate, versus usual care in improving decision quality among adults undergoing cardiovascular risk assessment. Methods: A single-center, parallel-group randomized controlled trial was conducted at Lahore General Hospital, Lahore, enrolling 39 participants allocated equally to control, moderate decision aid, or strong decision aid groups. Continuous outcomes included decisional conflict, decision self-efficacy, knowledge, decisional regret, and participation/satisfaction, while binary outcomes assessed decision attainment, family history behaviors, lifestyle changes, and screening completion. Group differences were analyzed using analysis of variance with effect sizes, followed by Bonferroni-adjusted pairwise comparisons, and categorical outcomes were evaluated using chi-square tests and odds ratios. Results: Significant between-group differences were observed across all continuous outcomes (all p ≤ 0.002), with the strong decision aid demonstrating the largest effects, including marked improvements in decision self-efficacy (d = 3.42) and participation/satisfaction (d = 2.82), and substantial reductions in decisional conflict (d = −1.45) and regret (d = −1.92). Binary outcomes showed favorable trends for decision aids but were underpowered for statistical significance. Conclusion: Decision aids significantly enhance decision quality in cardiovascular risk assessment, with greater benefits observed with higher intervention intensity, supporting the clinical value of comprehensive decision aids in primary prevention.

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References

Chesterton P, Tears C. The uptake of the Nordic hamstring exercise programme as an injury prevention strategy in professional cricket in the United Kingdom and barriers to implementation. Physiother Sport. 2021;50:1-6.

Chalker WJ, Shield AJ, Opar DA, Rathbone EN, Keogh JWL. Effect of acute augmented feedback on between limb asymmetries and eccentric knee flexor strength during the Nordic hamstring exercise. PLoS One. 2018;6:e4972.

Pannalal PV. Comparison between the effect of Nordic eccentric hamstring exercise versus positional release therapy on hamstring flexibility and endurance in male cricketers. 2020.

Markovic G, Sarabon N, Boban F, Zoric I, Jelcic M, Sos K, et al. Nordic hamstring strength of highly trained youth football players and its relation to sprint performance. J Strength Cond Res. 2020;34(3):800-7.

Impellizzeri FM, McCall A, van Smeden M. Why methods matter in a meta-analysis: a reappraisal showed inconclusive injury preventive effect of Nordic hamstring exercise. J Clin Epidemiol. 2021;140:111-24.

Al Attar WSA, Soomro N, Sinclair PJ, Pappas E, Sanders RH. Effect of injury prevention programs that include the Nordic hamstring exercise on hamstring injury rates in soccer players: a systematic review and meta-analysis. Sports Med. 2017;47(5):907-16.

Mc Intyre MJ. Eccentric hamstring strength in club Gaelic footballers. Int J Physiol. 2020;38(1):956.

Forrest MR, Scott BR, Hebert JJ, Dempsey AR. Injury prevention strategies for adolescent cricket pace bowlers. Sports Med. 2018;48(11):2449-61.

Van Dyk N, Behan FP, Whiteley R. Including the Nordic hamstring exercise in injury prevention programmes halves the rate of hamstring injuries: a systematic review and meta-analysis of 8459 athletes. Br J Sports Med. 2019;53(21):1362-70.

Cuthbert M, Ripley N, McMahon JJ, Evans M, Haff GG, Comfort P. The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations: a systematic review and meta-analyses. Sports Med. 2020;50(1):83-99.

Presland JD, Timmins RG, Bourne MN, Williams MD, Opar DA. The effect of Nordic hamstring exercise training volume on biceps femoris long head architectural adaptation. Scand J Med Sci Sports. 2018;28(7):1775-83.

Hegyi A, Lahti J, Giacomo J-P, Gerus P, Cronin NJ, Morin J-B. Impact of hip flexion angle on unilateral and bilateral nordic hamstring exercise torque and high-density electromyography activity. J Orthop Sports Phys Ther. 2019;49(8):584-92.

Freeman BW, Young WB, Talpey SW, Smyth AM, Pane CL, Carlon TA. The effects of sprint training and the Nordic hamstring exercise on eccentric hamstring strength. J Sports Med Phys Fitness. 2019;59(7):1119-25.

Ishøi L, Hölmich P, Aagaard P, Thorborg K, Bandholm T, Serner A. Effects of the Nordic hamstring exercise on sprint capacity in male football players: a randomized controlled trial. J Sports Sci. 2018;36(14):1663-72.

Hegyi A, Péter A, Finni T, Cronin N. Region-dependent hamstrings activity in Nordic hamstring exercise and stiff-leg deadlift defined with high-density electromyography. Scand J Med Sci Sports. 2018;28(3):992-1000.

Šarabon N, Marušič J, Marković G, Kozinc Ž. Kinematic and electromyographic analysis of variations in Nordic hamstring exercise. PLoS One. 2019;14(10):e0223437.

Ribeiro-Alvares JB, Marques VB, Vaz MA, Baroni BM. Four weeks of Nordic hamstring exercise reduce muscle injury risk factors in young adults. J Strength Cond Res. 2018;32(5):1254-62.

Krommes K, Petersen J, Nielsen M, Aagaard P, Hölmich P, Thorborg K. Sprint and jump performance in elite male soccer players following a 10-week Nordic Hamstring exercise protocol: a randomised pilot study. BMC Res Notes. 2017;10(1):1-6.

Oakley AJ, Jennings J, Bishop CJ. Holistic hamstring health: not just the Nordic hamstring exercise. Br J Sports Med. 2018;52:816-7.

Medeiros TM, Ribeiro-Alvares JB, Fritsch CG, Oliveira GS, Severo-Silveira L, Pappas E, et al. Effect of weekly training frequency with the Nordic hamstring exercise on muscle-strain risk factors in football players: a randomized trial. 2020;15(7):1026-33.

Drury B, Green T, Ramirez-Campillo R, Moran J. Influence of maturation status on eccentric hamstring strength improvements in youth male soccer players after the Nordic hamstring exercise. Int J Sports Physiol Perform. 2020;15(7):990-6.

Saleh A, Al Attar W, Faude O, Husain MA, Soomro N, Sanders RH. Combining the Copenhagen Adduction Exercise and Nordic Hamstring Exercise improves dynamic balance among male athletes: a randomized controlled trial. Sports Health. 2021;1941738121993479.

Severo-Silveira L, Dornelles MP, Lima-E-Silva FX, Marchiori CL, Medeiros TM, Pappas E, et al. Progressive workload periodization maximizes effects of Nordic hamstring exercise on muscle injury risk factors. J Strength Cond Res. 2021;35(4):1006-13.

Hasebe Y, Akasaka K, Otsudo T, Tachibana Y, Hall T, Yamamoto M. Effects of Nordic hamstring exercise on hamstring injuries in high school soccer players: a randomized controlled trial. Int J Sports Med. 2020;41(03):154-60.

Messer DJ, Bourne MN, Williams MD, Al Najjar A, Shield AJ. Hamstring muscle use in women during hip extension and the Nordic hamstring exercise: a functional magnetic resonance imaging study. J Orthop Sports Phys Ther. 2018;48(8):607-12.

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Published

2026-02-28

How to Cite

M. Abubakar Azhar, Muhammad Umar, & Muhammad Shahzad Qadree. (2026). Impact of Nordic Hamstring Exercises on Hamstring Injuries in Male Cricket Players. Journal of Health and Rehabilitation Research, 6(2), 1–7. https://doi.org/10.61919/jhrr.v6i2.1935

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