Upper and lower limb loading during weight-bearing activity in children: reaction forces and influence of body weight
| Autor: | J. L. Lanovaz, T. Treen, S. Hounjet, M. C. Erlandson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Male
030209 endocrinology & metabolism Physical Therapy Sports Therapy and Rehabilitation Lower limb activities medicine.disease_cause Body weight Lower limb Weight-bearing Upper Extremity Weight-Bearing 03 medical and health sciences 0302 clinical medicine Animal science Sex Factors Medicine Humans Orthopedics and Sports Medicine Force platform Ground reaction force Child Exercise business.industry Body Weight 030229 sport sciences medicine.anatomical_structure Lower Extremity Upper limb activities Upper limb Female Stress Mechanical business |
| Zdroj: | Journal of sports sciences. 36(14) |
| ISSN: | 1466-447X |
| Popis: | Weight bearing (WB) activity is important for healthy skeletal development. The magnitude of loading during WB activities, especially upper limb impacts, has yet to be quantified in children. This study quantifies ground reaction forces (GRF) experienced by children performing WB activities and examines the contribution of body weight (BW) to GRF. Fifty children, aged 8-12 were recruited (34 males). GRF were measured using force plates during 20 upper and lower limb activities (such as landing on the feet and hands). Sex differences in GRF and associations between peak force and BW were examined using independent sample t-tests and linear regressions (p 0.05), respectively. Lower limb GRF varied from 2-6x BW with no significant sex differences. GRF during upper limb activities varied from 1/3-1.7x BW with males experiencing significantly greater GRF for 25% of activities. BW was significantly associated with peak force in almost all activities; however, GRF variation explained by BW was wide-ranging across activities and not dependent on limb or activity type (static vs dynamic). Therefore, factors other than BW, such as technique, may be important in determining forces experienced by children performing WB activity and should be considered when choosing activities for WB activity interventions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|