Assessments of Ground Reaction Force and Range of Motion in Terms of Fatigue during the Body Weight Squat
Makaleler > Tam Makale · 2021
Yazarlar: Berkant Erman, Mehmet Zeki ÖZKOL, Jelena Ivanovic, Hakan Arslan, Marko Cosic, Yasin YÜZBAŞIOĞLU, Milivoj Dopsaj, Tolga AKŞİT
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2021, cilt 18, ss 4005-4005
Özet
The purpose of this study was to analyse in detail body weight squat (BWS)' fatigue effect on the range of motions (ROM) of the hip, knee, ankle and ground reaction forces (GRF). Twenty male recreational athletes (24.0 +/- 3.1 years, 178.85 +/- 7.12 cm and 78.7 +/- 11.45 kg) participated in this study. BWS were performed on four load cell platforms until the participants failed to continue. Participants performed 73 +/- 27 repetitions and the duration to complete of the repetitions was 140.72 +/- 62.28 s during the BWS exercise. The forefoot and hindfoot of the feet were on two load cells, thus, there were two under each foot. All of the data collected was divided into three sections for analysis (24 +/- 9 repetitions for each). In terms of GRF of the fore feet and hind feet, significant differences and medium to large effect size were found between each section (p = 0.006 similar to 0.040, ES = 0.693 similar to 0.492). No significant differences were found between right and left leg in all sections. Significant differences were found in the ROM of the hip between the sections of first-third (p = 0.044, ES = 0.482) and second-third (p = 0.034, ES = 0.510), the ROM of the knee first-third (p = 0.014, ES = 0.602) and second-third (p = 0.005, ES = 0.701) and for the ROM of the ankle first-second (p = 0.045, ES = 0.479). As a result, end-of-exercise fatigue caused an increase in the ROM of the hip, knee and ankle. Thus, it is observed that fatigue induced increased ROM, also increases the GRF towards the forefeet.