Effects of concentric and eccentric exercises in the rehabilitation of flexible flat foot - A randomized trial

Hariharasudhan Ravichandran, Kshama Susheel Shetty, Samatha Ashok ShettySaudi Journal of Sports Medicine 2022 22(2):74-81 Background: Flexible flat feet are one of the common presentations in the lower limb, which may be associated with postural stability, pathologies, and injuries. There are intrinsic and extrinsic causes for flat feet. Strengthening of muscles supporting the medial arch is the major goal in rehabilitating individuals with flat feet. Both concentric and eccentric strengthening programs are implemented in the rehabilitation of flat feet. Objectives: The objective of the study is to compare the effectiveness of concentric and eccentric exercise programs on improving navicular drop in adults with pronated feet. Materials and Methods: One hundred and four participants, between the age group of 18 and 25 years, were screened for pronated feet. Fifty-four participants fulfilling the inclusion and exclusion criteria were randomly assigned to either concentric (n = 27) or eccentric exercise group (n = 28). Both the groups performed their assigned exercise programs, either concentric or eccentric tibialis posterior strengthening exercises, respectively, for a duration of 6 weeks. Navicular drop test outcomes were assessed at baseline and postintervention. Results: The data were analyzed using IBM SPSS 20.0 version. Within-group analysis was performed using paired “t”-test, while between-group analysis performed using independent “t”-test. Postinterventional outcome was similar in both groups, and concentric group had significant outcomes (P = 0.006) in weight-bearing navicular drop test compared to eccentric group. There exists no statistical significance (P < 0.05) between the groups in improving medial longitudinal arch. Conclusion: Both concentric and eccentric exercises were equally effective in improving the medial longitudinal arch among participants with flexible flat foot. Future studies with long-term follow-up are recommended to validate the results of this study.

Hariharasudhan Ravichandran, Kshama Susheel Shetty, Samatha Ashok Shetty

Saudi Journal of Sports Medicine 2022 22(2):74-81

Background: Flexible flat feet are one of the common presentations in the lower limb, which may be associated with postural stability, pathologies, and injuries. There are intrinsic and extrinsic causes for flat feet. Strengthening of muscles supporting the medial arch is the major goal in rehabilitating individuals with flat feet. Both concentric and eccentric strengthening programs are implemented in the rehabilitation of flat feet. Objectives: The objective of the study is to compare the effectiveness of concentric and eccentric exercise programs on improving navicular drop in adults with pronated feet. Materials and Methods: One hundred and four participants, between the age group of 18 and 25 years, were screened for pronated feet. Fifty-four participants fulfilling the inclusion and exclusion criteria were randomly assigned to either concentric (n = 27) or eccentric exercise group (n = 28). Both the groups performed their assigned exercise programs, either concentric or eccentric tibialis posterior strengthening exercises, respectively, for a duration of 6 weeks. Navicular drop test outcomes were assessed at baseline and postintervention. Results: The data were analyzed using IBM SPSS 20.0 version. Within-group analysis was performed using paired “t”-test, while between-group analysis performed using independent “t”-test. Postinterventional outcome was similar in both groups, and concentric group had significant outcomes (P = 0.006) in weight-bearing navicular drop test compared to eccentric group. There exists no statistical significance (P < 0.05) between the groups in improving medial longitudinal arch. Conclusion: Both concentric and eccentric exercises were equally effective in improving the medial longitudinal arch among participants with flexible flat foot. Future studies with long-term follow-up are recommended to validate the results of this study.