Lower extremity joint stiffness in runners with low back pain

NewsBot · Dec 8, 2009

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Lower extremity joint stiffness in runners with low back pain.
Hamill J, Moses M, Seay J.
Res Sports Med. 2009;17(4):260-73.

The purpose of this retrospective study was to examine lower extremity joint stiffness between runners with and without low back pain. We compared data from three groups: current low back pain (LBP), resolved pain (RES), and a control (CTRL) group of runners. We hypothesized that the LBP group would exhibit increased ankle, knee, and hip joint stiffness when compared with the other groups. Subjects ran on a force treadmill at 3.8 m*s(-1) while data were collected. Joint stiffness was determined from the joint moment-angle profiles. Differences were observed in knee joint stiffness, with the LBP group exhibiting the greatest stiffness values. No differences in ankle or hip joint stiffness were observed. These data suggest that the LBP group of runners may not attenuate the foot-ground impact to the same level as the other groups. The decreased attenuation may increase the level of the shock to the low back region, thus potentially increasing the load on the low back.
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Admin2 · Dec 8, 2009

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Other threads tagged with low back pain
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NewsBot · Jan 8, 2021

Low back pain among Italian runners: A cross-sectional survey
F.Maselli et al
Physical Therapy in Sport; 4 January 2021

Highlights
•A great knowledge on LBP disorder in running hasn't emerged in recent literature, therefore the research on LBP in runners is in the early stage
•The studies that analyzed Low Back Pain (LBP) , like as Running Related Injuries (RRIs), in wide sample of runners, are very few, these findings could direct future researchers.
•A wide sample of Italian runners were involved.
•The findings of this cross-sectional study suggest that the prevalence of LBP runners is low compared to other RRIs
•The results of this study did not reveal relevant associations between the onset of LBP and specific factors related to training, equipment or lifestyle
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Background
Low Back Pain (LBP) is commonly reported as a very frequent disorder in sports, but its prevalence in runners remains unclear.

Objectives
To determine the prevalence of LBP in a wide sample of Italian runners

Design
A cross-sectional online survey.

Setting
A national survey, according to the CHERRIES and STROBE guidelines, was performed in 2019.

Participants
2539 Italian runners.

Methods
A sample of Italian runners registered with national running associations was recruited. The survey was conducted using an online survey development platform. The questionnaire was self-reported and included 38 questions.

Main Outcome Measures
Descriptive statistics and frequencies were used to analyze results. Relationships between demographics, daily habits and running characteristics and the responses given was calculated with Cramer’s V. Only correlation values higher >0.60 were deemed of interest.

Results
2,539 questionnaires (63.5%) were valid for analysis. In total, 22.6% of runners reported having experienced LBP in the past year. Most participants (77.0%) reporting episodes of LBP believed it was not caused by running. No significant correlations (Cramer’s V <0.60) were found between LBP and demographics, training characteristics or lifestyle habits.

Conclusion
The prevalence of LBP among Italian runners was 22,57%. LBP was not associated with training, equipment or lifestyle.
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NewsBot · Mar 1, 2021

Incidence and Risk Factors of Low Back Pain in Marathon Runners
Bao Wu et al
Volume 2021 |Article ID 6660304

Purpose. The occurrence of low back pain (LBP) in marathon runners has been poorly understood. This study aimed to describe the risk factors and identify whether these factors can cause LBP in these athletes. Methods. A self-developed questionnaire was randomly distributed to 850 runners of running a half or a full marathon. Participants responded with the questionnaire focusing on previous training and running conditions after their competitions. Results. On the basis of the remaining 800 valid questionnaires, the incidence of LBP was 4.50% (n = 36). A total of 572 (71.5%) males and 228 (28.5%) females, with an average age range of 33.9 ± 9.0 years, came from different occupations with different physical activity characteristics. However, no significant associations between occupation and runners with LBP () were found. In the final models, risk factors, including warm-up activities (, OR = 2.617), fatigue (p = 0.008, OR = 2.680), running gait posture (, OR = 2.273), and environmental temperature (, OR = 6.584), were significantly associated with LBP in marathoners. Conclusion. Although LBP was uncommon in marathoners, it was linked to the factors such as insufficient warm-up activities, fatigue, poor running gait posture, and uncomfortable environmental temperature. Future studies need to validate these results. Nevertheless, these findings could still be useful for protecting the lower back area of runners clinically.
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