Abstract
This study was conducted to determine the association between physical activity and sleep quality with handgrip muscles strength of medical students at Universitas Pembangunan Nasional “Veteran” Jakarta. This study was an analytical observational with cross sectional design. The participants were 75 male students aged 18-22 years old. Random sampling was used for this study. Measurement of physical activity was carried out using the Global Physical Activity Questionnaire (GPAQ) and sleep quality using the Pitsburgh Sleep Quality Index (PSQI) questionnaire. The strength of handgrip muscle was measured using Camry Handgrip Dynamometer. Result showed there was a significant association between physical activity with handgrip strength with significance value of p =0,000 (p <0,05) and sleep quality with p = 0,003 (p <0,05) using 95% CI. Multivariate test showed physical activity had more dominant association with handgrip strength with an OR score of 4,608 . Based on the result, it can be concluded student with good sleep quality and higher level of physical activity tend to have stronger handgrip muscle with physical activity as dominant factor.
Highlights
Muscle is an organ that function to generate movement through contraction (Dorland, 2011)
In a study that was conducted by Tosclair et al (2011), the result showed handgrip strength is associated with overall muscle strength, handgrip strength measurement can be used to predict overall muscle strength
The result showed, student tends to have sedentary behavior. This condition is due to the tight academic schedule, so medical students tend to not have time to do vigorous physical activity
Summary
Muscle is an organ that function to generate movement through contraction (Dorland, 2011). Having strong muscle is useful to support physical activity, because muscle strength is one of physical fitness components (Ratno, 2015). Handgrip dynamometer can be used to measure muscle strength (Nakandala, 2019). In a study that was conducted by Tosclair et al (2011), the result showed handgrip strength is associated with overall muscle strength, handgrip strength measurement can be used to predict overall muscle strength. The strength of the handgrip requires a combination of actions from a number of hand and forearm muscles (Saputra & Riyadi, 2016). In carrying out daily activities, handgrip muscle has essential role because hands have both gross and fine motor function (Manoharan, 2015). There will be a decrease in muscle strength caused by decrease in muscle mass, it is important to maintain muscle strength since youth (Dwiprakoso, 2013)
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