Saidon Amri

Effect of Single-Session Aerobic Exercise with Varying Intensities on Lipid Peroxidation and Muscle-Damage Markers in Sedentary Males

Objectives: This study was conducted to evaluate the effect of the different intensity levels of single-session aerobic exercise on serum levels of lipid peroxidation and muscle damage markers in sedentary males. Method: Fifty one sedentary healthy males aged 21.76±1.89 years were randomly divided into four groups, with one control (n=10) and three treatment groups that attended single-session aerobic exercise with low (n=14), moderate (n=14), and high (n=13) intensities. The serum levels of malondialdehyde (MDA) and creatine kinase (CK) were measured. Results: Data analysis revealed a significant effect by the intensity levels of aerobic exercise on MDA (P=0.001) and CK (P=0.003) post-test when the participants in the treatment groups were compared with the control. When the intensity of aerobic exercise was increased, the amount of MDA and CK was also found to be increased. Conclusion: Single-session aerobic exercise can increase the amount of MDA and CK, suggesting that low intensity level of aerobic exercise should be utilized for more adaptation, and to prevent lipid peroxidation and muscle damage in sedentary males.

The effect of exergaming on knee proprioception in older men: A randomized controlled trial

BACKGROUND Proprioception is the ability to sense the body position, muscle sense, joint stability and posture. As balance decreases during the process of aging, knee proprioception has a critical role in body balance and daily activities. Exergaming has shown to be a potentially effective and more enjoyable form of exercise delivery. OBJECTIVE The purpose of this study was to determine the effect of an 8-week Xbox Kinect exercise program on knee proprioception in healthy older adults. METHODOLOGY Thirty-two elderly men who were 65 years of age or older were randomly allocated to either a control or experimental group (allocation ratio 1:1). The experimental group received an exergame intervention that included Xbox Kinect with games focusing on movements of the knee joint for 8 weeks (three times per week and 40min per sessions). A Biodex Isokinetic Dynamometer was used to measure knee joint position sense before and after the exercise program. RESULTS After eight weeks of training, knee proprioception significantly improved in the intervention group for several knee joint angles: 30° (3.5±1.1), 45° (3.1±0.9), and 60° (3.0±0.6) compared to the control group 30° (5.2±0.8), 45° (5.2±0.8), and 60° (6.2±0.9) (dominant leg F1, 28=23.469, p=0.001. ƞ2=0.456; non-dominant leg F1, 28=23.076, p=0.001. ƞ2=0.452). CONCLUSION The results from this study indicate that exergame intervention can enhance knee proprioception in elderly men.

Mastery of gross motor skills in preschool and early elementary school obese children

Background: The purpose of this study was to determine the mastery of gross motor skills among preschool and early elementary school obese children; and determine the differences that exist between these two groups. Methods: Instrument TGMD-2 was used to assess gross motor skill performance of all the participants. Total sample size was 160; 80 obese children and 80 normal weight children. The mean age of preschool children was 4.87 (SD: 0.49), and for early elementary school children was 7.34 (SD: 0.63). The methods of analysis were one-way analysis of variance (ANOVA) and descriptive analysis. The alpha level of 0.05 was the criterion for all statistical significance. Results: The findings of this study revealed that there is a significant difference in gross motor skill performance between preschool obese children and early elementary school obese children. Conclusion: Obese children had lower gross motor skill proficiency compared to their normal weight peers. However, early elementary school obese children (aged between 6 and 8 years) performed poorer gross motor skills compared to preschool obese children (aged between 4 and 6 years).