Israel Halperin Profile
Israel Halperin

@Israel_Halperin

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Associate Professor @TelAvivUni, School of Public Health & Sylvan Adams Sports Institute. I study exercise and ways to prescribe it.

Tel-Aviv, Israel
Joined May 2009
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@Israel_Halperin
Israel Halperin
1 year
Happy to share that our paper “An Integrated Perspective of Effort and Perception of Effort” is online in @SportsMedicineJ. @avigotsky and I define and explore these constructs while addressing measurement issues across physical and cognitive domains.
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link.springer.com
Sports Medicine - Effort and the perception of effort (PE) have been extensively studied across disciplines, resulting in multiple definitions. These inconsistencies block scientific progress by...
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@Israel_Halperin
Israel Halperin
5 months
For coaches: RPE may be a practical, cost-effective tool to structure training intensity in SSGs without modifying game constraints like field size or player count. 6/6.
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@Israel_Halperin
Israel Halperin
5 months
This suggests that RPE can effectively regulate medium-to-high intensity in SSGs. However, its ability to distinguish between high-intensity levels or influence HR is limited. 5/6.
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@Israel_Halperin
Israel Halperin
5 months
RPE-8 and RPE-10 led to increased HSRD and IAD compared to RPE-6 (28–97% higher). However, differences between RPE-8 and RPE-10 were minimal, and HR did not significantly vary across conditions. 4/6
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@Israel_Halperin
Israel Halperin
5 months
We measured total distance, high-speed running distance (HSRD), intense accelerations/decelerations (IAD), and heart rate (HR) across conditions. Mixed models were used to analyze the effects. 3/6.
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@Israel_Halperin
Israel Halperin
5 months
We examined whether a 0–10 RPE scale can regulate playing intensity in SSGs. 25 youth soccer players (16–18 years) played games prescribed at RPE levels of 6, 8, and 10 over four sessions. 2/6.
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@Israel_Halperin
Israel Halperin
5 months
How effective is rating of perceived effort (RPE) for prescribing intensity in small-sided soccer games (SSGs)? Our recent randomized crossover trial explored this in youth players. 🧵1/6. Open access:.
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@Israel_Halperin
Israel Halperin
6 months
The takeaway:. There is a clear gap between RT benefits and the prescription practices and knowledge of family physicians. Educating physicians on RT could help bridge this gap, boost RT prescriptions, and improve public health. 6/6.
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@Israel_Halperin
Israel Halperin
6 months
And there is more to the story:. · 83.5% of physicians felt inadequately trained in RT. · 88.6% stated that they want more RT education. 5/6.
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@Israel_Halperin
Israel Halperin
6 months
Barriers to prescribing RT included:. · Lack of time (36.1%). · Limited knowledge of RT's effects (27.8%). · Uncertainty on how to prescribe it (23.4%). 4/6.
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@Israel_Halperin
Israel Halperin
6 months
Key findings:. · RT prescription rates were low (16.9%-31.9%). · Many lacked knowledge about RT & how to prescribe it. · Only 36.1% knew WHO's recommended RT frequency. · Yet, most viewed RT positively for various health conditions. 3/6
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@Israel_Halperin
Israel Halperin
6 months
We surveyed 158 family physicians via an online questionnaire to assess:. · Resistance training (RT) prescription practices & barriers. · Knowledge & attitudes toward RT. · Attitudes & interests in RT education. 2/6.
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@Israel_Halperin
Israel Halperin
6 months
A new paper by our group:. A Survey-Based Evaluation of Resistance Training Prescription Practices, Knowledge, and Attitudes Among Family Physicians. A short thread 1/6
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@Israel_Halperin
Israel Halperin
6 months
Leveraging social media data using language models provides a complementary method to traditional surveys, offering a broader perspective on PA motivations and adherence strategies. 6/6.
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@Israel_Halperin
Israel Halperin
6 months
Key strategies for PA adherence:. · Habit formation: 30%.· Goal setting: 13.9%.· Enjoyable activities: 12.1%.· Socializing: 9.7%.5/6.
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@Israel_Halperin
Israel Halperin
6 months
Based on 1577 unique user comments, we found the following:. Key motivational factors:. · Physical appearance: 23.9%.· Physical health: 18.9%.· Mental health: 16.9%.4/6.
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@Israel_Halperin
Israel Halperin
6 months
Our goal was to learn why and how people engage in PA using data from Reddit. We applied unsupervised clustering to identify themes and supervised classification to organize comments. 3/6
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@Israel_Halperin
Israel Halperin
6 months
While questionnaires and interviews are common in studying motives behind physical activity (PA), they come with certain biases. Here, we explored how social media channels can offer a more comprehensive perspective. 2/6.
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@Israel_Halperin
Israel Halperin
6 months
A new paper of ours published in @jmirpub: . Analysis of Reddit Discussions on Motivational Factors for Physical Activity: Cross-Sectional Study. short🧵1/6
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@Israel_Halperin
Israel Halperin
7 months
Both approaches resulted in similar effects even when the total rest duration required to be allocated was relatively short. Coaches and trainees can select either method depending on their preferences and training objectives. 8/8.
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@Israel_Halperin
Israel Halperin
7 months
Similar to the first study, we found highly comparable performance, physiological and psychological outcomes (excluding perception of autonomy, which was higher under the SS condition). Most participants (65%) favored the SS condition. 7/8
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